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Zeitschriftenbeiträge (peer-reviewed)

2022

Ecke, S.; Dempewolf, J.; Schwaller, A.; Endres, E.; Klemmt, H.; Tiede, D.; Seifert, T. (2022): UAV-Based Forest Health Monitoring: A Systematic Review. Remote Sensing 2022, 14 (3205), S. 1-45. DOI: 10.3390/rs14133205
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Heinken, T.; Diekmann, M.; Liira, J.; Orczewska, A.; Schmidt, M.; Brunet, J.; Chytrý, M.; Chabrerie, O.; Decocq, G.; de Frenne, P.; Dřevojan, P.; Dzwonko, Z.; Ewald, J.; Feilberg, J.; Graee, B.; Grytnes, J.; Hermy, M.; Kriebitzsch, W.; Laiviņš, M.; Lenoir, J.; Lindmo, S.; Marage, D.; Marozas, V.; Niemeyer, T.; Paal, J.; Pyšek, P.; Roosaluste, E.; Sádlo, J.; Schaminée, J.; Tyler, T.; Verheyen, K.; Wulf, M.; Vanneste, T. (2022): The European Forest Plant Species List (EuForPlant): Concept and applications. Journal of Vegetation Science 33, e13132 (3), S. 1-16. DOI: 10.1111/jvs.13132
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Ganuza, C.; Redlich, S.; Uhler, J.; Tobisch, C.; Rojas-Botero, S.; Peters, M.; Zhang, J.; Benjamin, C.; Englmeier, J.; Ewald, J.; Fricke, U.; Haensel, M.; Kollmann, J.; Riebl, R.; Uphus, L.; Müller, J.; Steffan-Dewenter, I. (2022): Interactive effects of climate and land use on pollinator diversity differ among taxa and scales. Science Advances 8, eabm9359 (8), S. 1-14. DOI: 10.1126/sciadv.abm9359
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Fricke, U.; Steffan-Dewenter, I.; Zhang, J.; Tobisch, C.; Rojas-Botero, S.; Benjamin, C.; Englmeier, J.; Ganuza, C.; Haensel, M.; Riebl, R.; Uhler, J.; Uphus, L.; Ewald, J.; Kollmann, J.; Redlich, S. (2022): Landscape diversity and local temperature, but not climate, affect arthropod predation among habitat types. PLoS ONE 17, e0264881 (4), S. 1-15. DOI: 10.1371/journal.pone.0264881
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Olleck, M.; Reger, B.; Ewald, J. (2022): Humuspflege in Gebirgswäldern der Kalkalpen: Wissensstand und Massnahmen. Schweizerische Zeitschrift für Forstwesen 173 (1), S. 36-43. DOI: 10.3188/szf.2022.0036
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Bislang war es weitgehend unklar, welche Rolle die Humuspflege in der Bewirtschaftung der Bergwälder in den
Bayerischen Alpen spielt. Eine Umfrage im Rahmen des Projektes «Alpenhumus als klimasensitiver C-Speicher
und entscheidender Standortfaktor im Bergwald» sollte den aktuellen Wissensstand in der forstlichen Praxis klären
und herausfinden, ob und welche unterstützenden Massnahmen notwendig sind, um die Humuspflege und
den Humusaufbau in den Gebirgswäldern der Bayerischen Alpen zu verbessern. Die Rückmeldungen aus 29 Fragebögen
zeigten, dass die Försterinnen und Förster den Anteil der Tangelhumusstandorte mit mehr als 15 cm
Humusmächtigkeit in ihrem Zuständigkeitsgebiet auf knapp 20% schätzen. Hochgerechnet auf die Waldfläche
der Bayerischen Alpen ergibt dies einen Anteil von rund 48 250 ha. Wichtigster Indikator des Forstpersonals für
die Lokalisation mächtiger Humusauflagen ist die Bodenvegetation. Etwa 20% der Befragten geben einen sichtbaren
Rückgang von Tangelhumus an. Als Hauptgefährdung für Tangelhumus nennen die Befragten die Bodenerosion,
die Klimaerwärmung, das Ausbleiben der Verjüngung und die Kronennutzung. Als relevante Massnahmen
zur Humuspflege geben sie das Belassen von Kronenmaterial im Bestand, die Einleitung und/oder
Sicherstellung der Verjüngung sowie die Jagd an. Zur Verbesserung des Humusaufbaus wünschen sich die Befragten
gezieltere Planungen, eine Änderung des Schalenwildmanagements und Schulungen für die Waldbesitzer.
Verbesserte Karten mit Geodaten, eine Förderung der natürlichen Waldentwicklung und ein Leitfaden zur
Humuspflege sollen dabei zusätzlich unterstützen.

Lugauer, F.; Kainz, J.; Gehlich, E.; Gaderer, M. (2022): Roadmap to Profitability for a Speed-Controlled Micro-Hydro Storage System Using Pumps as Turbines. Sustainability 14, 653 (2). DOI: 10.3390/su14020653
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Haselbeck, F.; Killinger, J.; Menrad, K.; Hannus, T.; Grimm, D. (2022): Machine Learning Outperforms Classical Forecasting on Horticultural Sales Predictions. Machine Learning with Applications Volume 7, 100239 (2022). DOI: 10.1016/j.mlwa.2021.100239
 mehr   Open Access

Forecasting future demand is of high importance for many companies as it affects operational decisions. This is especially relevant for products with a short shelf life due to the potential disposal of unsold items. Horticultural products are highly influenced by this, however with limited attention in forecasting research so far. Beyond that, many forecasting competitions show a competitive performance of classical forecasting methods. For the first time, we empirically compared the performance of nine state-of-the-art machine learning and three classical forecasting algorithms for horticultural sales predictions. We show that machine learning methods were superior in all our experiments, with the gradient boosted ensemble learner XGBoost being the top performer in 14 out of 15 comparisons. This advantage over classical forecasting approaches increased for datasets with multiple seasons. Further, we show that including additional external factors, such as weather and holiday information, as well as meta-features led to a boost in predictive performance. In addition, we investigated whether the algorithms can capture the sudden increase in demand of horticultural products during the SARS-CoV-2 pandemic in 2020. For this special case, XGBoost was also superior. All code and data is publicly available on GitHub: https://github.com/grimmlab/HorticulturalSalesPredictions.

2021

Buras, A.; Rammig, A.; Zang, C. (2021): The European Forest Condition Monitor: Using Remotely Sensed Forest Greenness to Identify Hot Spots of Forest Decline. Frontiers in Plant Science 12, 689220. DOI: 10.3389/fpls.2021.689220
 mehr   Open Access

Forest decline, in course of climate change, has become a frequently observed phenomenon. Much of the observed decline has been associated with an increasing frequency of climate change induced hotter droughts while decline induced by flooding, late-frost, and storms also play an important role. As a consequence, tree mortality rates have increased across the globe. Despite numerous studies that have assessed forest decline and predisposing factors for tree mortality, we still lack an in-depth understanding of (I) underlying eco-physiological mechanisms, (II) the influence of varying environmental conditions related to soil, competition, and micro-climate, and (III) species-specific strategies to cope with prolonged environmental stress. To deepen our knowledge within this context, studying tree performance within larger networks seems a promising research avenue. Ideally such networks are already established during the actual period of environmental stress. One approach for identifying stressed forests suitable for such monitoring networks is to assess measures related to tree vitality in near real-time across large regions by means of satellite-borne remote sensing. Within this context, we introduce the European Forest Condition monitor (EFCM)—a remote-sensing based, freely available, interactive web information tool. The EFCM depicts forest greenness (as approximated using NDVI from MODIS at a spatial resolution of roughly 5.3 hectares) for the pixel-specific growing season across Europe and consequently allows for guiding research within the context of concurrent forest performance. To allow for inter-temporal comparability and account for pixel-specific features, all observations are set in relation to normalized difference vegetation index (NDVI) records over the monitoring period beginning in 2001. The EFCM provides both a quantile-based and a proportion-based product, thereby allowing for both relative and absolute comparison of forest greenness over the observational record. Based on six specific examples related to spring phenology, drought, late-frost, tree die-back on water-logged soils, an ice storm, and windthrow we exemplify how the EFCM may help identifying hotspots of extraordinary forest greenness. We discuss advantages and limitations when monitoring forest condition at large scales on the basis of moderate resolution remote sensing products to guide users toward an appropriate interpretation.

Bazgan, C.; Ruzika, S.; Thielen, C.; Vanderpooten, D. (2021): The Power of the Weighted Sum Scalarization for Approximating Multiobjective Optimization Problems. Theory of Computing Systems 66 (2022), S. 395-415. DOI: 10.1007/s00224-021-10066-5
 mehr   Open Access

We determine the power of the weighted sum scalarization with respect to the computation of approximations for general multiobjective minimization and maximization problems. Additionally, we introduce a new multi-factor notion of approximation that is specifically tailored to the multiobjective case and its inherent trade-offs between different objectives. For minimization problems, we provide an efficient algorithm that computes an approximation of a multiobjective problem by using an exact or approximate algorithm for its weighted sum scalarization. In case that an exact algorithm for the weighted sum scalarization is used, this algorithm comes arbitrarily close to the best approximation quality that is obtainable by supported solutions – both with respect to the common notion of approximation and with respect to the new multi-factor notion. Moreover, the algorithm yields the currently best approximation results for several well-known multiobjective minimization problems. For maximization problems, however, we show that a polynomial approximation guarantee can, in general, not be obtained in more than one of the objective functions simultaneously by supported solutions.

Uhler, J.; Redlich, S.; Zhang, J.; Hothorn, T.; Tobisch, C.; Ewald, J.; Thorn, S.; Seibold, S.; Mitesser, O.; Morinière, J.; Bozicevic, V.; Benjamin, C.; Englmeier, J.; Fricke, U.; Ganuza, C.; Haensel, M.; Riebl, R.; Rojas-Botero, S.; Rummler, T.; Uphus, L.; Schmidt, S.; Steffan-Dewenter, I.; Müller, J. (2021): Relationship of insect biomass and richness with land use along a climate gradient. Nature Communications 12, 5946. DOI: 10.1038/s41467-021-26181-3
 mehr   Open Access

Recently reported insect declines have raised both political and social concern. Although the declines have been attributed to land use and climate change, supporting evidence suffers from low taxonomic resolution, short time series, a focus on local scales, and the collinearity of the identified drivers. In this study, we conducted a systematic assessment of insect populations in southern Germany, which showed that differences in insect biomass and richness are highly context dependent. We found the largest difference in biomass between semi-natural and urban environments (−42%), whereas differences in total richness (−29%) and the richness of threatened species (−56%) were largest from semi-natural to agricultural environments. These results point to urbanization and agriculture as major drivers of decline. We also found that richness and biomass increase monotonously with increasing temperature, independent of habitat. The contrasting patterns of insect biomass and richness question the use of these indicators as mutual surrogates. Our study provides support for the implementation of more comprehensive measures aimed at habitat restoration in order to halt insect declines.

Tidswell, J.; Downward, A.; Thielen, C.; Raith, A. (2021): Minimising emissions in traffic assignment with non-monotonic arc costs. Transportation Research Part B: Methodological 153, S. 70-90. DOI: 10.1016/j.trb.2021.08.007
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Somodi, I.; Ewald, J.; Bede-Fazekas, Á.; Molnár, Z. (2021): The relevance of the concept of potential natural vegetation in the Anthropocene. Plant Ecology & Diversity 14 (1-2), S. 13-22. DOI: 10.1080/17550874.2021.1984600
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Ambrožová, L.; Finnberg, S.; Felmann, B.; Buse, J.; Preuß, H.; Ewald, J.; Thorn, S. (2021): Coppicing and topsoil removal promote diversity of dung‐inhabiting beetles (Coleoptera: Scarabaeidae, Geotrupidae, Staphylinidae) in forests. Agricultural and Forest Entomology 24 (1), S. 104-113. DOI: 10.1111/afe.12472
 mehr   Open Access

  1. Central European forests experience a substantial loss of open-forest organisms due to forest management and increasing nitrogen deposition. However, management strategies, removing different levels of nitrogen, have been rarely evaluated simultaneously.
  2. We tested the additive effects of coppicing and topsoil removal on communities of dung-inhabiting beetles compared to closed forests. We sampled 57 021 beetles, using baited pitfall traps exposed on 27 plots.
  3. Experimental treatments resulted in significantly different communities by promoting open-habitat species. While alpha diversity did not differ among treatments, gamma diversity of Geotrupidae and Scarabaeidae and beta diversity of Staphylinidae were higher in coppice than in forest. Functional diversity of rove beetles was higher in both, coppice and topsoil-removed plots, compared to control plots. This was likely driven by higher habitat heterogeneity in established forest openings. Five dung beetle species and four rove beetle species benefitted from coppicing, one red-listed dung beetle and two rove beetle species benefitted from topsoil removal.
  4. Our results demonstrate that dung-inhabiting beetles related to open forest patches can be promoted by both, coppicing and additional topsoil removal. A mosaic of coppice and bare-soil-rich patches can hence promote landscape-level gamma diversity of dung and rove beetles within forests.

Olleck, M.; Kohlpaintner, M.; Mellert, K.; Reger, B.; Göttlein, A.; Ewald, J. (2021): Thick forest floors in the Calcareous Alps – Distribution, ecological functions and carbon storage potential. CATENA 207, 105664. DOI: 10.1016/j.catena.2021.105664
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The thickness and composition of forest floors plays an essential role for the efficiency and resilience of mountain forests to store carbon, water and nutrients. Up to now, the distribution of particularly thick organic forest floors (TOFF) in the Bavarian Calcareous Alps is poorly known and their ecosystem services deserve increased consideration under climate change. We wanted to improve the knowledge of the TOFF-distribution and to investigate the forcing processes and ecological functions of TOFF. We aimed to quantify their carbon storage potential and to model areas in which humus management is mandatory for sustainable forest use. We drew a stratified sample of soil profiles. Through the combination of relief and soil parameters, we identified crucial control variables and modelled actual and potential (without human disturbance) forest floor thickness in the Bavarian Calcareous Alps based on quantile regression and Generalized Additive Models (GAM). TOFF were predicted to occur on approximately 10% of the forest area of the Bavarian Alps. A decisive condition for the development of TOFF was the absence or only shallow development of mineral fine soil. Contrary to conventional wisdom, these TOFF were found across a wide range of (montane to subalpine) elevations. C-storage of TOFF amounts to ca. 6.9 t C/ha per cm of humus depth and ca. 5.2 Mt C in the study area, resulting in C accumulations comparable to peatlands. TOFF are decisive for the delivery of ecosystem services, especially in the protection forests of the Bavarian Calcareous Alps. Due to the absence or ephemeral depth of mineral soil, all ecological functions depend solely on the forest floor. Therefore, the careful handling of the humus stock is mandatory for a sustainable management in these forests.

Giudici, A.; Lu, T.; Thielen, C.; Zuidwijk, R. (2021): An analysis of the stability of hinterland container transport cooperation, Transportation Science. Transportation Science (online first) 55 (5), S. 1170-1186. DOI: 10.1287/trsc.2021.1050
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Matschinske, J.; Alcaraz, N.; Benis, A.; Golebiewski, M.; Grimm, D.; Heumos, L.; Kacprowski, T.; Lazareva, O.; List, M.; Louadi, Z.; Pauling, J.; Pfeifer, N.; Röttger, R.; Schwämmle, V.; Sturm, G.; Traverso, A.; Van Steen, K.; Vaz de Freitas, M.; Villalba Silva, G.; Wee, L.; Wenke, N.; Zanin, M.; Zolotareva, O.; Baumbach, J.; Blumenthal, D. (2021): The AIMe registry for artificial intelligence in biomedical research. Nature Methods 18, S. 1128-1131. DOI: 10.1038/s41592-021-01241-0
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We present the AIMe registry, a community-driven reporting platform for AI in biomedicine. It aims to enhance the accessibility, reproducibility and usability of biomedical AI models, and allows future revisions by the community. 

Boeckmann, J.; Thielen, C. (2021): A (B+1)-approximation for network flow interdiction with unit costs, Discrete Applied Mathematics. Discrete Applied Mathematics (online first) 2021 (304). DOI: 10.1016/j.dam.2021.07.008
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Pferschy, U.; Schauer, J.; Thielen, C. (2021): Approximating the product knapsack problem. Optimization Letters (Online first) 15 (6), S. 2529-2540. DOI: 10.1007/s11590-021-01760-x
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Bussa, M.; Zollfrank, C.; Röder, H. (2021): Life cycle assessment with parameterised inventory to derive target values for process parameters of microalgae biorefineries. Algal Research 57, 102352. DOI: 10.1016/j.algal.2021.102352
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Härtl, S.; Kainz, J.; Schuele, H.; Gaderer, M. (2021): Experimental Investigation of a Control Strategy Based on Combustion Stability and Combustion Phasing for a Multi-Cylinder Engine with Fueled Pre-Chambers and Cylinder Pressure Transducers. Technical Paper 2021-01-0639. DOI: 10.4271/2021-01-0639
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Rheude, F.; Kondrasch, J.; Röder, H.; Fröhling, M. (2021): Review of the terminology in the sustainable building sector. Journal of Cleaner Production 286, 125445. DOI: 10.1016/j.jclepro.2020.125445
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Herzel, A.; Ruzika, S.; Thielen, C. (2021): Approximation methods for multiobjective optimization problems: A survey. INFORMS Journal on Computing 33 (4), S. 1284-1299. DOI: 10.1287/ijoc.2020.1028
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Lugauer, F.; Kainz, J.; Gaderer, M. (2021): Techno-Economic Efficiency Analysis of Various Operating Strategies for Micro-Hydro Storage Using a Pump as a Turbine. Energies 14, 425 (2). DOI: 10.3390/en14020425
mehr   Open Access

2020

Eisen, A.; Bussa, M.; Röder, H. (2020): A review of environmental assessments of biobased against petrochemical adhesives. Journal of Cleaner Production 277, 124277. DOI: 10.1016/j.jclepro.2020.124277
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Genze, N.; Bharti, R.; Grieb, M.; Schultheiss, S.; Grimm, D. (2020): Accurate Machine Learning-Based Germination Detection, Prediction and Quality Assessment of Three Grain Crops. Plant Methods 16, 157. DOI: 10.1186/s13007-020-00699-x
 mehr   Open Access

Background

Assessment of seed germination is an essential task for seed researchers to measure the quality and performance of seeds. Usually, seed assessments are done manually, which is a cumbersome, time consuming and error-prone process. Classical image analyses methods are not well suited for large-scale germination experiments, because they often rely on manual adjustments of color-based thresholds. We here propose a machine learning approach using modern artificial neural networks with region proposals for accurate seed germination detection and high-throughput seed germination experiments.

Results

We generated labeled imaging data of the germination process of more than 2400 seeds for three different crops, Zea mays (maize), Secale cereale (rye) and Pennisetum glaucum (pearl millet), with a total of more than 23,000 images. Different state-of-the-art convolutional neural network (CNN) architectures with region proposals have been trained using transfer learning to automatically identify seeds within petri dishes and to predict whether the seeds germinated or not. Our proposed models achieved a high mean average precision (mAP) on a hold-out test data set of approximately 97.9%, 94.2% and 94.3% for Zea maysSecale cerealeand Pennisetum glaucum respectively. Further, various single-value germination indices, such as Mean Germination Time and Germination Uncertainty, can be computed more accurately with the predictions of our proposed model compared to manual countings.

Conclusion

Our proposed machine learning-based method can help to speed up the assessment of seed germination experiments for different seed cultivars. It has lower error rates and a higher performance compared to conventional and manual methods, leading to more accurate germination indices and quality assessments of seeds.

Vienken, T.; Rossetto, R.; Barbagli, A.; De Filippis, G.; Marchina, C.; Mazzianto, G. (2020): Importance of the induced recharge term in riverbank filtration: Hydrodynamics, hydrochemical, and numerical modelling investigations. Hydrology 7, 96 (4). DOI: 10.3390/hydrology7040096
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Senf, C.; Buras, A.; Zang, C.; Rammig, A.; Seidl, R. (2020): Excess forest mortality is consistently linked to drought across Europe. Nature Communications 11, 6200. DOI: 10.1038/s41467-020-19924-1
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Riga, K.; Jahr, K.; Thielen, C.; Borrmann, A. (2020): Mixed integer programming for dynamic tower crane and storage area optimization on construction sites. Automation in Construction 120, 103259. DOI: 10.1016/j.autcon.2020.103259
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Vienken, T.; Nordbeck, J.; Bauer, S.; Dahmke, A.; Delfs, J. (2020): A modular cement-based subsurface heat storage: Performance test, model development and thermal impacts. Applied Energy 279, 115823. DOI: 10.1016/j.apenergy.2020.115823
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Herzel, A.; Bazgan, C.; Ruzika, S.; Thielen, C.; Vanderpooten, D. (2020): One-exact approximate Pareto sets. Journal of Global Optimization 80, S. 87-115. DOI: 10.1007/s10898-020-00951-7
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Meyer, B.; Buras, A.; Rammig, A.; Zang, C. (2020): Higher susceptibility of beech to drought in comparison to oak. Dendrochronologia 64, 125780. DOI: 10.1016/j.dendro.2020.125780
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Abel, Z.; Bosboom, J.; Coulombe, M.; Demaine, E.; Hamilton, L.; Hesterberg, A.; Kopinsky, J.; Lynch, J.; Rudoy, M.; Thielen, C. (2020): Who witnesses The Witness? Finding witnesses in The Witness is hard and sometimes impossible. Theoretical Computer Science 839, S. 41-102. DOI: 10.1016/j.tcs.2020.05.031
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Shekhar, A.; Chen, J.; Bhattacharjee, S.; Buras, A.; Castro, A.; Zang, C.; Rammig, A. (2020): Capturing the Impact of the 2018 European Drought and Heat across Different Vegetation Types Using OCO-2 Solar-Induced Fluorescence. Remote Sensing 12, 3249 (19). DOI: 10.3390/rs12193249
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Bazgan, C.; Herzel, A.; Ruzika, S.; Thielen, C.; Vanderpooten, D. (2020): An approximation algorithm for a general class of parametric optimization problems. Journal of Combinatorial Optimization 2020. DOI: 10.1007/s10878-020-00646-5
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Vidal, A.; Schucknecht, A.; Toechertle, P.; Andrade, D.; Garcia-Franco, N.; von Heßberg, A.; Krämer, A.; Sierts, A.; Fischer, A.; Willibald, G.; Fütterer, S.; Ewald, J.; Baumert, V.; Weiss, M.; Schulz, S.; Schloter, M.; Bogacki, W.; Wiesmeier, M.; Mueller, C.; Dannemann, M. (2020): High resistance of soils to short-term re-grazing in a long-term abandoned alpine pasture. Agriculture, Ecosystems and Environment 300, 107008. DOI: 10.1016/j.agee.2020.107008
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Wartena, P.; Ewald, J. (2020): Waldgesellschaften auf Sonderstandorten im Nationalpark Hainich und deren Entwicklungsdynamik von 2002 bis 2018. Tuexenia 40, S. 53–69. DOI: 10.14471/2020.40.023
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Buras, A.; Rammig, A.; Zang, C. (2020): A novel approach for the identification of pointer years. Dendrochronologia 63, 125746. DOI: 10.1016/j.dendro.2020.125746
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Chytrý, M.; Tichý, L.; Hennekens, S.; Knollová, I.; Janssen, J.; Rodwell, J.; Peterka, T.; Marcenò, C.; Landucci, F.; Danihelka, J.; Hájek, M.; Dengler, J.; Novák, P.; Zukal, D.; Jiménez-Alfaro, B.; Mucina, L.; Abdulhak, S.; Acic, S.; Agrillo, E.; Attorre, F.; Bergmeier, E.; Biurrun, I.; Boch, S.; Bölöni, J.; Bonari, G.; Braslavskaya, T.; Bruelheide, H.; Antonio Campos, J.; Carni, A.; Casella, L.; Ćuk, M.; Ćušterevska, R.; De Bie, E.; Delbosc, P.; Demina, O.; Didukh, Y.; Dítě, D.; Dziuba, T.; Ewald, J.; Gavilán, R.; Gégout, J.; Giusso del Galdo, G.; Golub, V.; Goncharova, N.; Goral, F.; Graf, U.; Indreica, A.; Isermann, M.; Jandt, U.; Jansen, .; Jansen, J.; Jašková, A.; Jiroušek, M.; Kącki, Z.; Kalníková, V.; Kavgacı, A.; Khanina, L.; Korolyuk, A.; Kozhevnikova, M.; Kuzemko, A.; Küzmič, F.; Kuznetsov, O.; Laivins, M.; Lavrinenko, I.; Lavrinenko, O.; Lebedeva, M.; Lososová, Z.; Lysenko, T.; Maciejewski, L.; Mardari, C.; Marinšek, A.; Napreenko, M.; Onyshchenko, V.; Pérez-Haase, A.; Pielech, R.; Prokhorov, V.; Rasomavicius, V.; Rojo, M.; Rūsiņa, S.; Schrautzer, J.; Šibík, J.; Silc, U.; Škvorc, Ž.; Smagin, V.; Stancic, Z.; Stanisci, A.; Tikhonova, E.; Tonteri, T.; Uogintas, D.; Valachovič, M.; Vassilev, K.; Vynokurov, D.; Willner, W.; Yamalov, S.; Evans, D.; Palitzsch Lund, M.; Spyropoulou, R.; Tryfon, E.; Schaminée, J. (2020): EUNIS Habitat Classification: expert system, characteristic species combinations and distribution maps of European habitats. Applied Vegetation Science 23 (4), S. 648-675. DOI: 10.1111/avsc.12519
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Gumpinger, A.; Rieck, B.; Grimm, D.; Borgwardt, K. (2020): Network-guided search for genetic heterogeneity between gene pairs. Bioinformatics 37 (1), S. 57-65. DOI: 10.1093/bioinformatics/btaa581
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Schuldt, B.; Buras, A.; Arend, M.; Vitasse, Y.; Beierkuhnlein, C.; Damm, A.; Gharun, M.; Grams, T.; Hauck, M.; Hajek, P.; Hartmann, H.; Hiltbrunner, E.; Hoch, G.; Holloway-Phillips, M.; Körner, C.; Larysch, E.; Lübbe, T.; Nelson, D.; Rammig, A.; Rigling, A.; Rose, L.; Ruehr, N.; Schumann, K.; Weiser, F.; Werner, C.; Wohlgemuth, T.; Zang, C.; Kahmen, A. (2020): A first assessment of the impact of the extreme 2018 summer drought on Central European forests. Basic and Applied Ecology 45, S. 86-103. DOI: 10.1016/j.baae.2020.04.003
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Papastefanou, P.; Zang, C.; Pugh, T.; Liu, D.; Grams, T.; Hickler, T.; Rammig, A. (2020): A Dynamic Model for Strategies and Dynamics of Plant Water-Potential Regulation Under Drought Conditions. Frontiers in Plant Science 11, 373, S. 1-13. DOI: 10.3389/fpls.2020.00373
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Härtl, S.; Kainz, J.; Schuele, H.; Beer, J.; Gaderer, M. (2020): KNOCK Detection with Series Cylinder Pressure Sensors. Technical Paper 2020-01-1143. DOI: 10.4271/2020-01-1143
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Castro, A.; Chen, J.; Zang, C.; Shekhar, A.; Jimenez, J.; Bhattacharjee, S.; Kindu, M.; Morales, V.; Rammig, A. (2020): OCO-2 Solar-Induced Chlorophyll Fluorescence Variability across Ecoregions of the Amazon Basin and the Extreme Drought Effects of El Niño (2015–2016). Remote Sensing 12, 1202 (7). DOI: 10.3390/rs12071202
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Buras, A.; Rammig, A.; Zang, C. (2020): Quantifying impacts of the 2018 drought on European ecosystems in comparison to 2003. Biogeosciences 17 (6), S. 1655-1672. DOI: 10.5194/bg-17-1655-2020
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Novák, P.; Zukal, D.; Kollár, J.; Roleček, J.; Świerkosz, K.; Ewald, J.; Csiky, J.; Onyshchenko, V.; Chytrý, M. (2020): Oak-hornbeam forests of central Europe: a formalized classification and syntaxonomic revision. Preslia 92, S. 1-34. DOI: 10.23855/preslia.2020.001
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Zang, C.; Buras, A.; Esquivel-Muelbert, A.; Jump, A.; Rigling, A.; Rammig, A. (2020): Standardized drought indices in ecological research: Why one size does not fit all. Global Change Biology 26 (2), S. 322-324. DOI: 10.1111/gcb.14809
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Neumayer, M.; Teschenmacher, S.; Schloemer, S.; Zahner, V.; Rieger, W. (2020): Hydraulic Modeling of Beaver Dams and Evaluation of their Impacts on Flood Events. Water 12, 300 (1), S. 1-23. DOI: 10.3390/w12010300
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Togninalli, M.; Seren, Ü.; Freudenthal, J.; Monroe, J.; Meng, D.; Nordborg, M.; Weigel, D.; Borgwardt, K.; Korte, A.; Grimm, D. (2020): AraPheno and the AraGWAS Catalog 2020: a major database update including RNA-Seq and knockout mutation data for Arabidopsis thaliana. Nucleic Acids Research 48 (D1), S. D1063-D1068. DOI: 10.1093/nar/gkz925
 mehr   Open Access

Abstract

Genome-wide association studies (GWAS) are integral for studying genotype-phenotype relationships and gaining a deeper understanding of the genetic architecture underlying trait variation. A plethora of genetic associations between distinct loci and various traits have been successfully discovered and published for the model plant Arabidopsis thaliana. This success and the free availability of full genomes and phenotypic data for more than 1,000 different natural inbred lines led to the development of several data repositories. AraPheno (https://arapheno.1001genomes.org) serves as a central repository of population-scale phenotypes in A. thaliana, while the AraGWAS Catalog (https://aragwas.1001genomes.org) provides a publicly available, manually curated and standardized collection of marker-trait associations for all available phenotypes from AraPheno. In this major update, we introduce the next generation of both platforms, including new data, features and tools. We included novel results on associations between knockout-mutations and all AraPheno traits. Furthermore, AraPheno has been extended to display RNA-Seq data for hundreds of accessions, providing expression information for over 28 000 genes for these accessions. All data, including the imputed genotype matrix used for GWAS, are easily downloadable via the respective databases.

2019

Vienken, T.; Kreck, M.; Dietrich, P. (2019): Monitoring the impact of intensive shallow geothermal energy use on groundwater temperatures in a residential neighborhood. Geothermal Energy 7, 8. DOI: 10.1186/s40517-019-0123-x
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Křenová, Z.; Brabec, J.; Rösler, S.; Kindlmann, P. (2019): Can we learn from the ecology of the Bohemian gentian and save another closely related species of Gentianella? PLoS ONE 14, e0226487 (12). DOI: 10.1371/journal.pone.0226487
 mehr   Open Access

Bohemian gentian (Gentianella praecox subsp. bohemica) is an endemic taxon that occurs on the Czech Massif and together with the Sturmian gentian (Gentianella obtusifolia subsp. sturmiana) are the only autumnal species of Gentianella with large flowers in central Europe. Both species have declined dramatically in both population size and numbers of populations. The Bohemian gentian rescue programme, which recommended appropriate management measures, was adopted in 2011. Here we study the ecology of this species, results of the rescue programme and explore the possibilities of using the experience resulting from this programme for improving the viability of the second species. Long-term monitoring of populations of the Bohemian gentian has shown that regular mowing or grazing together with careful litter removal and gap creation are necessary for its survival in the current climatic conditions. We found some ecological differences between these two closely related species of Gentianella. However, our empirical experience of the largest population of the Sturmian gentian at a site where it thrives, and general evidence that gaps are crucial for the successful establishment of Gentianella seedlings, indicate that regular mowing or grazing together with careful litter removal and creation of gaps, should also be recommended as in the case of the Bohemian gentian rescue programme. Artificial gaps are especially crucial for successful seedling regeneration in oligotrophic meadows with dense vegetation, where the last Sturmian gentian populations survive.

Bharti, R.; Grimm, D. (2019): Current challenges and best-practice protocols for microbiome analysis. Briefings in Bioinformatics 22 (1), S. 178-193. DOI: 10.1093/bib/bbz155
 mehr   Open Access

Abstract

Analyzing the microbiome of diverse species and environments using next-generation sequencing techniques has significantly enhanced our understanding on metabolic, physiological and ecological roles of environmental microorganisms. However, the analysis of the microbiome is affected by experimental conditions (e.g. sequencing errors and genomic repeats) and computationally intensive and cumbersome downstream analysis (e.g. quality control, assembly, binning and statistical analyses). Moreover, the introduction of new sequencing technologies and protocols led to a flood of new methodologies, which also have an immediate effect on the results of the analyses. The aim of this work is to review the most important workflows for 16S rRNA sequencing and shotgun and long-read metagenomics, as well as to provide best-practice protocols on experimental design, sample processing, sequencing, assembly, binning, annotation and visualization. To simplify and standardize the computational analysis, we provide a set of best-practice workflows for 16S rRNA and metagenomic sequencing data (available at https://github.com/grimmlab/MicrobiomeBestPracticeReview).

Brüssow, K.; Gornott, C.; Faße, A.; Grote, U. (2019): The link between smallholders’ perception of climatic changes and adaptation in Tanzania. Climate Change 157 (2), S. 545–563. DOI: 10.1007/s10584-019-02581-9
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Olleck, M.; Reger, B.; Ewald, J. (2019): Plant indicators for Folic Histosols in mountain forests of the Calcareous Alps. Applied Vegetation Science 23 (2), S. 285-296. DOI: 10.1111/avsc.12470
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Questions: Although thick forest floors overlying unweathered bedrock are important resources for mountain forests' functioning, their actual distribution is poorly known and difficult to delimit in the field. We therefore asked: (a) What is the specific composition of vegetation growing on Folic Histosols; (b) can indicator plants be used to detect Folic Histosols in mountain forests; (c) what do functional traits of plant indicators tell about the ecological properties of Folic Histosols? Location: Northern Calcareous Alps, south Germany. Methods: Based on representative stratified sampling of joint vegetation plots and soil profile descriptions, we estimated the frequency and thickness of Folic Histosols, determined the proportion of compositional variation specifically attributable to forest floor thickness using ordination, applied Indicator Species Analysis and searched for typical traits and ecological requirements of indicator species. Results: The co-existence of acidophilic and calciphytic plants is typical for the tessellated occurrence and the successional origin of Folic Histosols. In the study region, the detection of Folic Histosols on pure limestone or dolomite by ground vegetation works very well. Particularly acidophilic plants are suitable indicators for thick forest floors. The indicator value of bryophytes and Ericaceae for Folic Histosols is likely related to the colonization of rotten wood. Folic Histosol indicator species are widely spread in the allocation to sociology group, which ranges from open landscapes to dark forests and reflects successional origin. Conclusions: In mountain forests on carbonate bedrock, thick humus layers often occur next to bare rock. This tessellated structure can also be detected in the ground vegetation, where acidophilic and calciphytic plants occur side by side. Thick Folic Histosols in late successional forests are dominated by acidophilic plants colonizing rotten wood. Thus, the detection of Folic Histosols by understorey species is an easy and cost-effective possibility and one key to protect these vulnerable forest sites.

Brown, P.; ..., ..; Grimm, D.; ..., ..; Zhou, Y. (2019): Large expert-curated database for benchmarking document similarity detection in biomedical literature search. Database 2019. DOI: 10.1093/database/baz085
 mehr   Open Access

Abstract

Document recommendation systems for locating relevant literature have mostly relied on methods developed a decade ago. This is largely due to the lack of a large offline gold-standard benchmark of relevant documents that cover a variety of research fields such that newly developed literature search techniques can be compared, improved and translated into practice. To overcome this bottleneck, we have established the RElevant LIterature SearcHconsortium consisting of more than 1500 scientists from 84 countries, who have collectively annotated the relevance of over 180 000 PubMed-listed articles with regard to their respective seed (input) article/s. The majority of annotations were contributed by highly experienced, original authors of the seed articles. The collected data cover 76% of all unique PubMed Medical Subject Headings descriptors. No systematic biases were observed across different experience levels, research fields or time spent on annotations. More importantly, annotations of the same document pairs contributed by different scientists were highly concordant. We further show that the three representative baseline methods used to generate recommended articles for evaluation (Okapi Best Matching 25, Term Frequency–Inverse Document Frequency and PubMed Related Articles) had similar overall performances. Additionally, we found that these methods each tend to produce distinct collections of recommended articles, suggesting that a hybrid method may be required to completely capture all relevant articles. The established database server located at https://relishdb.ict.griffith.edu.au is freely available for the downloading of annotation data and the blind testing of new methods. We expect that this benchmark will be useful for stimulating the development of new powerful techniques for title and title/abstract-based search engines for relevant articles in biomedical research.

Berg, C.; Ewald, J.; Dengler, J.; Hobohm, C. (2019): The whole and its parts: why and how to disentangle plant communities and synusiae in vegetation classification. Applied Vegetation Science 23 (1), S. 127-135. DOI: 10.1111/AVSC.12461
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Heppelmann, J.; Labelle, E.; Wittkopf, S.; Seeling, U. (2019): In-stand debarking with the use of modified harvesting heads: a potential solution for key challenges in European forestry. European Journal of Forest Research 138, S. 1067-1081. DOI: 10.1007/s10342-019-01225-y
 mehr   Open Access

Modern forestry is increasingly confronted with challenges that appear with intensive forest management and the progression of the effects of climate change. The forestry sector is able to react to the changing conditions by adapting management plans, forest structure or planting tree species with a higher stress resistance. However, during stand management activities, silvicultural treatments and harvesting operations can have an impact on the further development of the remaining forest ecosystem. In Germany, the most widely used harvesting system for thinning operations is a single-grip harvester used for felling and processing trees followed by a forwarder for timber extraction from the machine operating trails to roadside. In this research project, debarking rollers and other modifications designed for Eucalyptus harvesting heads were tested on conventional harvesting heads for the first time to assess the possibility of adding debarking to mechanized forest operations under Central European conditions. Seven field tests with varying tree species, diameters and age classes, were established within German state forests in Lower Saxony and in Bavaria. These tests were repeated in both summer and winter seasons to evaluate the influence of associated tree sap flows on debarking quality. Three different harvesting heads were modified to assess the altered mechanical characteristics and setups. To assess debarking ability originating from head modifications, a photo-optical measurement system developed within the scope of the project was used. The results demonstrate that especially for summertime operations, simple modifications to currently used harvesting heads are able to provide an average debarking efficiency up to 90% depending on the modifications. Another key finding is that a negatively affected sap flow, experienced during wintertime operations, resulted in 46% lower debarking efficiency, while spruce bark beetle infestations only resulted in a wider spread of the variation. Additionally, the vertical position of the log within the tree proved to have an influence on debarking efficiency, resulting in 15% lower average debarking for butt logs and 9% for top logs as compared to middle logs. Since a debarking process requires the stem to be fed through the harvesting head on multiple occasions to remove bark, average harvesting productivity might be reduced by approx. 10% compared to productivity measured with conventional harvesting heads. Considering the results and the extent of the modifications, the system proved to be a potential addition to existing harvesting methods facing changing challenges in future forestry.

Land, A.; Remmele, S.; Hofmann, J.; Reichle, D.; Eppli, M.; Zang, C.; Buras, A.; Hein, S.; Zimmermann, R. (2019): Two millennia of Main region (southern Germany) hydroclimate variability. Climate of the Past 15 (5), S. 1677-1690. DOI: 10.5194/cp-15-1677-2019
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Heppelmann, J.; Labelle, E.; Wittkopf, S. (2019): Static and Sliding Frictions of Roundwood Exposed to Different Levels of Processing and Their Impact on Transportation Logistics. Forests 10, 568 (7), S. 1-18. DOI: 10.3390/f10070568
 mehr   Open Access

Load safety is a critical component of successful logistic operations. Different influencing factors can affect the necessity of intensive load securing methods. The most dominant factor is the friction characteristics of the intended cargo. A cargo with special requirements on load safety is debarked roundwood. Due to modern forestry challenges, larger amounts of debarked roundwood assortments are now being produced within German forest operations. To assess the influence of debarking onto the static and sliding frictions of Norway spruce, pulling tests were performed and compared to barked assortments. Results showed that a significant difference in both static and sliding frictions exists between barked and debarked assortments within the first seven days after harvesting. However, this significant difference became less prominent after the logs continued to dry out and no difference was detected after 21 days. Over the monitored period, debarked assortments presented a 40%–45% faster drying rate than barked assortments. This resulted in a calculated 11%–28% additional transportable net load (m3) of debarked roundwood assortments for long trailer systems. Hence, debarked roundwood can be treated similarly to barked roundwood if stored long enough prior to road transportation, while having the potential of increased savings within the wood logistic chain.

Neubacher, F.; Faße, A.; Grote, U. (2019): Victimization and Fear of Crime in Rural Tanzania. International Journal of Rural Criminology 4 (2), S. 173-192. DOI: 10.18061/1811/87911
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Krause, H.; Faße, A.; Grote, U. (2019): Nutrient-Dense Crops for Rural and Peri-Urban Smallholders in Kenya—A Regional Social Accounting Approach. Sustainability 11, 3017 (11), S. 1-22. DOI: 10.3390/su11113017
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Heppelmann, J.; Labelle, E.; Seifert, T.; Seifert, S.; Wittkopf, S. (2019): Development and Validation of a Photo-Based Measurement System to Calculate the Debarking Percentages of Processed Logs. Remote Sensing 11, 1133 (9), S. 1-16. DOI: 10.3390/rs11091133
 mehr   Open Access

Within a research project investigating the applicability and performance of modified harvesting heads used during the debarking of coniferous tree species, the actual debarking percentage of processed logs needed to be evaluated. Therefore, a computer-based photo-optical measurement system (Stemsurf) designed to assess the debarking percentage recorded in the field was developed, tested under laboratory conditions, and applied in live field operations. In total, 1720 processed logs of coniferous species from modified harvesting heads were recorded and analyzed within Stemsurf. With a single log image as the input, the overall debarking percentage was calculated by further estimating the un-displayed part of the log surface by defining polygons representing the differently debarked areas of the log surface. To assess the precision and bias of the developed measurement system, 480 images were captured under laboratory conditions on an artificial log with defined surface polygons. Within the laboratory test, the standard deviation of average debarking percentages remained within a 4% variation. A positive bias of 6.7% was caused by distortion and perspective effects. This resulted in an average underestimation of 1.1% for the summer debarking percentages gathered from field operations. The software generally performed as anticipated through field and lab testing and offered a suitable alternative of assessing stem debarking percentage, a task that should increase in importance as more operations are targeting debarked products.

Castellanos-Rizaldos, E.; Zhang, X.; Tadigotla, V.; Grimm, D.; Karlovich, C.; Raez, L.; Skog, J. (2019): Exosome-based detection of activating and resistance EGFR mutations from plasma of non-small cell lung cancer patients. Oncotarget 10 (30), S. 2911-2920. DOI: 10.18632/oncotarget.26885
 mehr   Open Access

Non-small cell lung cancer (NSCLC) is the most prevalent form of lung cancer and its molecular landscape has been extensively studied. The most common genetic alterations in NSCLC are mutations within the epidermal growth factor receptor (EGFR) gene, with frequencies between 10-40%. There are several molecular targeted therapies for patients harboring these mutations.

Liquid biopsies constitute a flexible approach to monitor these mutations in real time as opposed to tissue biopsies that represent a single snap-shot in time. However, interrogating cell free DNA (cfDNA) has inherent biological limitations, especially at early or localized disease stages, where there is not enough tumor material released into the patient’s circulation.

We developed a qPCR- based test (ExoDx EGFR) that interrogates mutations within EGFR using Exosomal RNA/DNA and cfDNA (ExoNA) derived from plasma in a cohort of 110 NSCLC patients.

The performance of the assay yielded an overall sensitivity of 90% for L858R, 83% for T790M and 73% for exon 19 indels with specificities of 100%, 100%, and 96% respectively. In a subcohort of patients with extrathoracic disease (M1b and MX) the sensitivities were 92% (L858R), 95% (T790M), and 86% (exon 19 indels) with specificity of 100%, 100% and 94% respectively.

Schubert, M.; Petermann, E.; Stollberg, R.; Gebel, M.; Scholten, J.; Knöller, K.; Lorz, C.; Glück, F.; Riemann, K.; Weiß, H. (2019): Improved Approach for the Investigation of Submarine Groundwater Discharge by Means of Radon Mapping and Radon Mass Balancing. Water 11, 749 (4), S. 1-19. DOI: 10.3390/w11040749
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Malherbe, H.; Pauleit, S.; Lorz, C. (2019): Mapping the Loss of Ecosystem Services in a Region Under Intensive Land Use Along the Southern Coast of South Africa. Land 8, 51 (3), S. 1-18. DOI: 10.3390/land8030051
mehr   Open Access

Bussa, M.; Eisen, A.; Zollfrank, C.; Röder, H. (2019): Life cycle assessment of microalgae products: State of the art and their potential for the production of polylactid acid. Journal of Cleaner Production 213, S. 1299-1312. DOI: 10.1016/j.jclepro.2018.12.048
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Sommer, R.; Ziarnetzky, V.; Meßlinger, U.; Zahner, V. (2019): Der Einfluss des Bibers auf die Artenvielfalt in semiaquatischen Lebensräumen: Sachstand und Metaanalyse für Europa und Nordamerika. Naturschutz und Landschaftsplanung 51 (3), S. 108-115.
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Vecera, M.; Divisek, J.; Lenoir, J.; Ewald, J.; et al., (. (2019): Alpha diversity of vascular plants in European forests. Journal of Biogeography 46 (9), S. 1919-1935. DOI: 10.1111/jbi.13624
mehr

Malherbe, H.; Le Roux, J.; Le Maitre, D.; Pauleit, S.; Lorz, C. (2019): A Simplified Method to Assess the Impact of Sediment and Nutrient Inputs on River Water Quality in Two Regions of the Southern Coast of South Africa. Environmental Management 63 (5), S. 658-672. DOI: 10.1007/s00267-019-01147-w
mehr

Bhuyan-Erhardt, U.; Erhardt, T.; Laaha, G.; Zang, C.; Parajka, J.; Menzel, A. (2019): Validation of drought indices using environmental indicators: streamflow and carbon flux data. Agricultural and Forest Meteorology 265, S. 218-226. DOI: 10.1016/j.agrformet.2018.11.016
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Bruelheide, H.; Jiménez-Alfaro, B.; Dengler, J.; Ewald, J.; et al., (. (2019): sPlot – a new tool for global vegetation analyses. Journal of Vegetation Science 30 (2), S. 161-186. DOI: 10.1111/jvs.12710
mehr   Open Access

2018

Rammig, A.; Heinke, J.; Hofhansl, F.; Verbeeck, H.; Baker, T.; Christoffersen, B.; Ciais, P.; De Deurwaerder, H.; Fleischer, K.; Galbraith, D.; Guimberteau, M.; Huth, A.; Johnson, M.; Krujit, B.; Langerwisch, F.; Meir, P.; Papastefanou, P.; Sampaio, G.; Thonicke, K.; von Randow, C.; Zang, C.; Rödig, E. (2018): A generic pixel-to-point comparison for simulated large-scale ecosystem properties and ground-based observations: an example from the Amazon region. Geoscientific Model Development 11 (12), S. 5203-5215. DOI: 10.5194/gmd-11-5203-2018
mehr   Open Access

Dorado-Liñán, I.; Piovesan, G.; Martínez-Sancho, E.; Gea-Izquierdo, G.; Zang, C.; Cañellas, I.; Castagneri, D.; Di Filippo, A.; Gutiérrez, E.; Ewald, J.; Fernández-de-Uña, L.; Hornstein, D.; Jantsch, M.; Levanič, T.; Mellert, K.; Vacchiano, G.; Zlatanov, T.; Menzel, A. (2018): Geographical adaptation prevails over species-specific determinism in trees’ vulnerability to climate change at Mediterranean rear-edge forests. Global Change Biology 25 (4), S. 1296-1314. DOI: 10.1111/gcb.14544
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Krumke, S.; Thielen, C.; Weinschenk, P.; Westphal, S. (2018): Full Implementation of social choice functions in dominant strategies. International Journal of Game Theory 48, S. 337-361. DOI: 10.1007/s00182-018-0654-6
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Thielen, C. (2018): Duty rostering for physicians at a department of orthopedics and trauma surgery. Operations Research for Health Care 19, S. 80-91. DOI: 10.1016/j.orhc.2018.03.004
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Gerl, T.; Almer, J.; Zahner, V.; Neuhaus, B. (2018): Der BISA-Test: Ermittlung der Formenkenntnis von Schülern am Beispiel einheimischer Vogelarten. Zeitschrift für Didaktik der Naturwissenschaften 24, S. 235-249. DOI: 10.1007/s40573-018-0086-7
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Zang, C.; Jochner-Oette, S.; Cortés, J.; Rammig, A.; Menzel, A. (2018): Regional trend changes in recent surface warming. Climate Dynamics 52, S. 6463-6473. DOI: 10.1007/s00382-018-4524-5
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Meng, B.; Vienken, T.; Kolditz, O.; Shao, H. (2018): Modeling the groundwater temperature response to extensive operation of ground source heat pump systems: A case study in Germany. Energy Procedia 152, S. 971-977. DOI: 10.1016/j.egypro.2018.09.102
mehr   Open Access

Vienken, T.; Meng, B.; Kolditz, O.; Shao, H. (2018): Modeling the local temperature response to intensive operation of ground source heat pump systems: A case study in Germany. Energy Procedia 152 (6), S. 971-977. DOI: 10.1016/j.egypro.2018.09.102
mehr   Open Access

Hacket-Pain, A.; Ascoli, D.; Vacchiano, G.; Biondi, F.; Cavin, L.; Conedera, M.; Drobyshev, I.; Dorado-Liñán, I.; Friend, A.; Grabner, M.; Hartl, C.; Kreyling, J.; Lebourgeois, F.; Levanič, T.; Menzel, A.; van der Maaten, E.; van der Maaten-Theunissen, M.; Muffler, L.; Motta, R.; Roibu, C.; Popa, I.; Scharnweber, T.; Weigel, R.; Wilmking, M.; Zang, C. (2018): Climatically controlled reproduction drives interannual growth variability in a temperate tree species. Ecology Letters 21 (12), S. 1833-1844. DOI: 10.1111/ele.13158
mehr   Open Access

Sieber, S.; Graef, F.; Amjath-Babu, T.; Mutabazi, K.; Tumbo, S.; Faße, A.; Gomez y Paloma, S.; Rybak, C.; Lana, M.; Ndah, H.; Uckert, G.; Schuler, J.; Grote, U. (2018): Trans-SEC’s food security research in Tanzania: from constraints to adoption for out- and upscaling of agricultural innovations. Food Security 10, S. 775-783. DOI: 10.1007/s12571-018-0822-3
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Kaufmann, G.; Romanov, D.; Tippelt, T.; Vienken, T.; Werban, U.; Dietrich, P.; Mai, F.; Börner, F. (2018): Mapping and modelling of collapse sinkholes in soluble rock: The Münsterdorf site, northern Germany. Journal of Applied Geophysics 154, S. 64-80. DOI: 10.1016/j.jappgeo.2018.04.021
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Castellanos-Rizaldos, E.; Grimm, D.; Tadigotla, V.; Hurley, J.; Healy, J.; Neal, P.; Sher, M.; Venkatesan, R.; Karlovich, C.; Raponi, M.; Krug, A.; Noerholm, M.; Tannous, J.; Tannous, B.; Raez, L.; Skog, J. (2018): Exosome-Based Detection of EGFR T790M in Plasma from Non–Small Cell Lung Cancer Patients. Clinical Cancer Research 24 (12), S. 2944-2950. DOI: 10.1158/1078-0432.CCR-17-3369
 mehr   Open Access

Purpose: About 60% of non–small cell lung cancer (NSCLC) patients develop resistance to targeted epidermal growth factor receptor (EGFR) inhibitor therapy through the EGFR T790M mutation. Patients with this mutation respond well to third-generation tyrosine kinase inhibitors, but obtaining a tissue biopsy to confirm the mutation poses risks and is often not feasible. Liquid biopsies using circulating free tumor DNA (cfDNA) have emerged as a noninvasive option to detect the mutation; however, sensitivity is low as many patients have too few detectable copies in circulation. Here, we have developed and validated a novel test that overcomes the limited abundance of the mutation by simultaneously capturing and interrogating exosomal RNA/DNA and cfDNA (exoNA) in a single step followed by a sensitive allele-specific qPCR.

Experimental Design: ExoNA was extracted from the plasma of NSCLC patients with biopsy-confirmed T790M-positive (N = 102) and T790M-negative (N = 108) samples. The T790M mutation status was determined using an analytically validated allele-specific qPCR assay in a Clinical Laboratory Improvement Amendment laboratory.

Results: Detection of the T790M mutation on exoNA achieved 92% sensitivity and 89% specificity using tumor biopsy results as gold standard. We also obtained high sensitivity (88%) in patients with intrathoracic disease (M0/M1a), for whom detection by liquid biopsy has been particularly challenging.

Conclusions: The combination of exoRNA/DNA and cfDNA for T790M detection has higher sensitivity and specificity compared with historical cohorts using cfDNA alone. This could further help avoid unnecessary tumor biopsies for T790M mutation testing.

Reincke, K.; Vilvert, E.; Faße, A.; Graef, F.; Sieber, S.; Lana, M. (2018): Key factors influencing food security of smallholder farmers in Tanzania and the role of cassava as a strategic crop. Food Security 10, S. 911-924. DOI: 10.1007/s12571-018-0814-3
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Uckert, G.; Graef, F.; Faße, A.; Herrmann, L.; Hoffmann, H.; Kahimba, F.; Kissoly, L.; König, H.; Lambert, C.; Mahoo, H.; Makoko, B.; Mrosso, L.; Mutabazi, K.; Mwinuka, L.; Schaefer, M.; Schindler, J.; Sieber, S.; Swai, E.; Yustas, Y. (2018): ScalA-FS: expert-based ex-ante assessments of local requirements and success potential of upgrading strategies for improving food security in rural Tanzania. Food Security 10, S. 841-858. DOI: 10.1007/s12571-018-0789-0
mehr

Herzel, A.; Hopf, M.; Thielen, C. (2018): Multistage interval scheduling games. Journal of Scheduling 2018 (22), S. 359-377. DOI: 10.1007/s10951-018-0568-y
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Herrmann, R.; Faße, A.; Nkonya, E. (2018): Food value chain linkages and household food security in Tanzania. Food Security 10, S. 827-839. DOI: 10.1007/s12571-018-0792-5
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Ewald, J.; Vild, O. (2018): High resilience of plant species composition to coppice restoration – a chronosequence from the oak woodland of Gerolfing (Bavaria). Tuexenia 38, S. 61-78. DOI: 10.14471/2017.38.001
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Berg, C.; Ewald, J.; Berg, G.; Hobohm, C. (2018): What are the organismic elements of vegetation science? Applied Vegetation Science 21 (2), S. 341-344. DOI: 10.1111/avsc.12371
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Exposito-Alonso, M.; Becker, C.; Schuenemann, V.; Reiter, E.; Setzer, C.; Slovak, R.; Brachi, B.; Hagmann, J.; Grimm, D.; Chen, J.; Busch, W.; Bergelson, J.; Ness, R.; Weigel, D. (2018): The rate and potential relevance of new mutations in a colonizing plant lineage. PLoS Genetics 14, e1007155 (2). DOI: 10.1371/journal.pgen.1007155
 mehr   Open Access

By following the evolution of populations that are initially genetically homogeneous, much can be learned about core biological principles. For example, it allows for detailed studies of the rate of emergence of de novo mutations and their change in frequency due to drift and selection. Unfortunately, in multicellular organisms with generation times of months or years, it is difficult to set up and carry out such experiments over many generations. An alternative is provided by “natural evolution experiments” that started from colonizations or invasions of new habitats by selfing lineages. With limited or missing gene flow from other lineages, new mutations and their effects can be easily detected. North America has been colonized in historic times by the plant Arabidopsis thaliana, and although multiple intercrossing lineages are found today, many of the individuals belong to a single lineage, HPG1. To determine in this lineage the rate of substitutions—the subset of mutations that survived natural selection and drift–, we have sequenced genomes from plants collected between 1863 and 2006. We identified 73 modern and 27 herbarium specimens that belonged to HPG1. Using the estimated substitution rate, we infer that the last common HPG1 ancestor lived in the early 17th century, when it was most likely introduced by chance from Europe. Mutations in coding regions are depleted in frequency compared to those in other portions of the genome, consistent with purifying selection. Nevertheless, a handful of mutations is found at high frequency in present-day populations. We link these to detectable phenotypic variance in traits of known ecological importance, life history and growth, which could reflect their adaptive value. Our work showcases how, by applying genomics methods to a combination of modern and historic samples from colonizing lineages, we can directly study new mutations and their potential evolutionary relevance.

Togninalli, M.; Seren, Ü.; Meng, D.; Fitz, J.; Nordborg, M.; Weigel, D.; Borgwardt, K.; Korte, A.; Grimm, D. (2018): The AraGWAS Catalog: a curated and standardized Arabidopsis thaliana GWAS catalog. Nucleic Acids Research 46 (1), S. 1150-1156. DOI: 10.1093/nar/gkx954
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The abundance of high-quality genotype and phenotype data for the model organism Arabidopsis thaliana enables scientists to study the genetic architecture of many complex traits at an unprecedented level of detail using genome-wide association studies (GWAS). GWAS have been a great success in A. thaliana and many SNP-trait associations have been published. With the AraGWAS Catalog (https://aragwas.1001genomes.org) we provide a publicly available, manually curated and standardized GWAS catalog for all publicly available phenotypes from the central A. thaliana phenotype repository, AraPheno. All GWAS have been recomputed on the latest imputed genotype release of the 1001 Genomes Consortium using a standardized GWAS pipeline to ensure comparability between results. The catalog includes currently 167 phenotypes and more than 222 000 SNP-trait associations with P < 10−4, of which 3887 are significantly associated using permutation-based thresholds. The AraGWAS Catalog can be accessed via a modern web-interface and provides various features to easily access, download and visualize the results and summary statistics across GWAS.

Malherbe, H.; Gebel, M.; Pauleit, S.; Lorz, C. (2018): Land Use Pollution Potential of Water Sources Along the Southern Coast of South Africa. Change and Adaptation in Socio-Ecological Systems 2018 (4), S. 7-20. DOI: 10.1515/cass-2018-0002
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Zahner, V. (2018): Konkurrenz und Prädation an der Mikrostruktur Schwarzspechthöhle. Ornithologischer Anzeiger (57), S. 89-92.
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2017

Krug, A.; Enderle, D.; Karlovich, C.; Priewasser, T.; Bentink, S.; Spiel, A.; Brinkmann, K.; Emenegger, J.; Grimm, D.; Castellanos-Rizaldos, E.; Goldman, J.; Sequist, L.; Soria, J.; Camidge, D.; Gadgeel, S.; Wakelee, H.; Raponi, M.; Noerholm, M.; Skog, J. (2017): Improved EGFR mutation detection using combined exosomal RNA and circulating tumor DNA in NSCLC patient plasma. Annals of Oncology 29 (3), S. 700-706. DOI: 10.1093/annonc/mdx765
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Zahner, V.; Bauer, R.; Kaphegyi, T. (2017): Are Black woodpecker (Dryocopus martius) tree cavities in temperate beech (Fagus sylvatica) forests an answer to depredation risk? Journal of Ornithology 158, S. 1073-1079. DOI: 10.1007/s10336-017-1467-2
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Gebel, M.; Halbfass, S.; Wallace, M.; Malherbe, H.; Vogt, H.; Lorz, C. (2017): Simulation of land use impacts on sediment and nutrient transfer in coastal areas of Western Cape, South Africa. Change and Adaptation in Socio-Ecological Systems 3 (1), S. 1-17. DOI: 10.1515/cass-2017-0001
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Sieber, S.; Graef, F.; Amjath-Babu, T.; Mutabazi, K.; Tumbo, S.; Faße, A.; Gomez y Paloma, S.; Rybak, C.; Lana, M.; Ndah, H.; Uckert, G.; Schuler, J.; Grote, U. (2017): Introduction to a Special Issue: Regional Food and Nutritional Security in Tanzania – Methods, Tools and Applications. Food Security 9, S. 1143-1145. DOI: 10.1007/s12571-017-0744-5
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Sieber, S.; Graef, F.; Amjath-Babu, T.; Mutabazi, K.; Tumbo, S.; Faße, A.; Gomez y Paloma, S.; Rybak, C.; Lana, M.; Ndah, H.; Uckert, G.; Schuler, J.; Grote, U. (2017): Trans-SEC’s food security research in Tanzania: principles, research models and assumptions. Food Security 9, S. 1147-1155. DOI: 10.1007/s12571-017-0745-4
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Bucher, S.; König, P.; Menzel, A.; Migliavacca, M.; Ewald, J.; Römermann, C. (2017): Traits and climate are associated with first flowering day in herbaceous species along elevational gradients. Ecology and Evolution 8 (2), S. 1147–1158. DOI: 10.1002/ece3.3720
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Mellert, K.; Lenoir, J.; Winter, S.; Kölling, C.; Carni, A.; Dorado-Liñán, I.; Gégout, J.; Göttlein, A.; Hornstein, D.; Jantsch, M.; Juvan, N.; López-Senespleda, E.; Menzel, A.; Stojanović, D.; Täger, S.; Tsiripidis, I.; Wohlgemuth, T.; Ewald, J. (2017): Soil water storage appears to compensate for climatic aridity at the xeric margin of European tree species distribution. European Journal of Forest Research 137 (1), S. 79-92. DOI: 10.1007/s10342-017-1092-x
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Corsten, H.; Hopf, M.; Kasper, B.; Thielen, C. (2017): Assortment Planning for Multiple Chain Stores. OR Spectrum 40 (4), S. 875-912. DOI: 10.1007/s00291-017-0496-9
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Lima, J.; Aquino, F.; Chaves, T.; Lorz, C. (2017): Development of a spatially explicit approach for mapping ecosystem services in the Brazilian Savanna - MapES. Ecological Indicators 82, S. 513-525. DOI: 10.1016/j.ecolind.2017.07.028
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Holzhauser, M.; Krumke, S.; Thielen, C. (2017): On the Complexity and Approximability of Budget-Constrained Minimum Cost Flows. Information Processing Letters 126, S. 24-29. DOI: 10.1016/j.ipl.2017.06.003
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Halffmann, P.; Ruzika, S.; Thielen, C.; Willems, D. (2017): A General Approximation Method for Bicriteria Minimization Problems. Theoretical Computer Science 695, S. 1-15. DOI: 10.1016/j.tcs.2017.07.003
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Kern, C.; Schölch, M.; Crocker, P.; Fellman, D.; Marsh, A.; Mausel, D.; Pecore, M.; Phillippi, J.; Waukau, R.; Waupochick, A. (2017): Group Opening Outcomes, Sustainable Forest Management, and the Menominee Nation Lands. Journal of Forestry 115 (5), S. 416-424. DOI: 10.5849/jof.2016-092
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Brüssow, K.; Faße, A.; Grote, U. (2017): Is Sustainable Intensification Pro-Poor? Evidence from Small-Scale Farmers in Rural Tanzania. Resources 6, 47 (3), S. 1-16. DOI: 10.3390/resources6030047
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Wagner, V.; Chytrý, M.; ..., ..; Ewald, J.; ..., ..; Pyšek, P. (2017): Alien plant invasions in European woodlands. Diversity and Distributions 23 (9), S. 969-981. DOI: 10.1111/ddi.12592
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Ewald, J.; Kirby, K. (2017): Coppicing systems as a way of understanding patterns in forest vegetation. Folia Geobotanica 52 (1), S. 1-3. DOI: 10.1007/s12224-017-9297-9
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Hopf, M.; Thielen, C.; Wendt, O. (2017): Competitive Algorithms for Multistage Online Scheduling. European Journal of Operational Research 260 (2), S. 468-481. DOI: 10.1016/j.ejor.2016.12.047
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Brüssow, K.; Faße, A.; Grote, U. (2017): Implications of Climate-Smart Strategy Adoption by Farm Households for Food Security in Tanzania. Food Security 9 (6), S. 1203-1218. DOI: 10.1007/s12571-017-0694-y
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Holzhauser, M.; Krumke, S.; Thielen, C. (2017): A Network Simplex Method for the Budget-Constrained Minimum Cost Flow Problem. European Journal of Operational Research 259 (3), S. 864-872. DOI: 10.1016/j.ejor.2016.11.024
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Bhuyan-Erhardt, U.; Zang, C.; Menzel, A. (2017): Different responses of multispecies tree ring growth to various drought indices across Europe. Dendrochronologia 44, S. 1-8. DOI: 10.1016/j.dendro.2017.02.002
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Dorado-Liñán, I.; Zorita, E.; Martínez-Sancho, E.; Gea-Izquierdo, G.; Di Filippo, A.; Gutiérrez, E.; Levanič, T.; Piovesan, G.; Vacchiano, G.; Zang, C.; Zlatanov, T.; Menzel, A. (2017): Large-scale atmospheric circulation enhances the Mediterranean East-West tree growth contrast at rear-edge deciduous forests. Agricultural and Forest Meteorology 239, S. 86-95. DOI: 10.1016/j.agrformet.2017.02.029
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Bhuyan-Erhardt, U.; Zang, C.; Vicente-Serrano, S.; Menzel, A. (2017): Exploring Relationships among Tree-Ring Growth, Climate Variability, and Seasonal Leaf Activity on Varying Timescales and Spatial Resolutions. Remote Sensing 9, 526 (6), S. 1-13. DOI: 10.3390/rs9060526
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Walentowski, H.; Falk, W.; Mette, T.; Kunz, J.; Bräuning, A.; Meinardus, C.; Zang, C.; Sutcliffe, L.; Leuschner, C. (2017): Assessing future suitability of tree species under climate change by multiple methods: a case study in southern Germany. Annals of Forest Research 60 (1), S. 101-126. DOI: 10.15287/afr.2016.789
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Giudici, A.; Halffmann, P.; Ruzika, S.; Thielen, C. (2017): Approximation Schemes for the Parametric Knapsack Problem. Information Processing Letters 120, S. 11-15. DOI: 10.1016/j.ipl.2016.12.003
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Ewald, J. (2017): Resurvey of historical vegetation plots: a tool for understanding long-term dynamics of plant communities. Applied Vegetation Science 20 (2), S. 161-163. DOI: 10.1111/avsc.12307
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Ewald, J.; Ziche, D. (2017): Giving meaning to Ellenberg nutrient values: National Forest Soil Inventory yields frequency-based scaling. Applied Vegetation Science 20 (1), S. 115-123. DOI: 10.1111/avsc.12278
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Questions |Ellenberg nutrient values based on indicator plant species composition of vegetation plots (mN) are widely used to measure temporal and spatial patterns of nutrient deficiency and eutrophication. The widespread use is in contrast to the lack of direct calibration against soil chemical proxies of nutrient availability. Lack of calibration and range contraction due to averaging of a bounded ordinal scale hinder the interpretation of mN across studies. Based on a large set of concomitant vegetation–soil data we asked: (1) which is the best single soil predictor of mN, (2) which combination of soil variables best explains mN; and (3) can a meaningful relative scale of mN be provided for comparative purposes? |Location | Forests in Germany, sampled in a systematic 8 km × 8 km grid. | Methods | The German National Forest Soil Inventory (NFSI) provides a large, representative sample of joint soil and vegetation plots, which were additionally intersected with modelled background N deposition. Values of mN of vegetation plots were related to measured 36 soil and three deposition variables by correlation and multiple regression. The distribution of mN was partitioned based on quantiles. | Results | In NFSI mN was most closely related to the C/N ratio of the topsoil (r² = 0.31). Multiple analysis regression showed that soil acidity, soil P and K, humus quality and deposition were complementary predictors (multiple r² = 0.47) of mN. | Conclusions | Values of mN are moderately, but consistently, related to measurable chemical properties of forest soils. The 10, 30, 70 and 90% quantiles of the frequency distribution of mN in the NFSI data are proposed to define a relative scale of macronutrient availability in forest soils, distinguishing very oligotrophic (mN < 3.38), oligotrophic (3.38–4.8), mesotrophic (4.80–5.75), eutrophic (5.75–6.21) and highly eutrophic (>6.21) sites, which broadly correspond to conventional classes of C/N ratio used in forest site mapping. This proposed five-class trophic scale can be used to compare mN and its trends across studies in forest vegetation of Central Europe.

Willner, W.; Jiménez-Alfaro, B.; Agrillo, E.; Biurrun, I.; Antonio Campos, J.; Carni, A.; Casella, L.; Csiky, J.; Ćušterevska, R.; Didukh, Y.; Ewald, J.; Jandt, U.; Jansen, F.; Kącki, Z.; Kavgacı, A.; Lenoir, J.; Marinšek, A.; Onyshchenko, V.; Rodwell, J.; Schaminée, J.; Šibík, J.; Škvorc, Ž.; Svenning, J.; Tsiripidis, I.; Turtureanu, P.; Tzonev, R.; Vassilev, K.; Venanzoni, R.; Wohlgemuth, T.; Chytrý, M. (2017): Classification of European beech forests: a Gordian Knot? Applied Vegetation Science 20, S. 494-512. DOI: 10.1111/avsc.12299
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Buras, A.; Zang, C.; Menzel, A. (2017): Testing the stability of transfer functions. Dendrochronologia 42, S. 56-62. DOI: 10.1016/j.dendro.2017.01.005
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Wilnhammer, M.; Wittkopf, S.; Richter, K.; Weber-Blaschke, G. (2017): The impact of a new emission control act on particulate matter emissions from residential wood energy use in Bavaria, Germany. Journal of Cleaner Production 145, S. 134-141. DOI: 10.1016/j.jclepro.2017.01.039
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Ascoli, D.; Maringer, J.; Hacket-Pain, A.; Conedera, M.; Drobyshev, I.; Motta, R.; Cirolli, M.; Kantorowicz, W.; Zang, C.; Schueler, S.; Croisé, L.; Piussi, P.; Berretti, R.; Palaghianu, C.; Westergren, M.; Lageard, J.; Burkart, A.; Gehrig Bichsel, R.; Thomas, P.; Beudert, B.; Övergaard, R.; Vacchiano, G. (2017): Two centuries of masting data for European beech and Norway spruce across the European continent. Ecology 98 (5), S. 1473. DOI: 10.1002/ecy.1785
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Hartl-Meier, C.; Esper, J.; Liebhold, A.; Konter, O.; Rothe, A.; Büntgen, U. (2017): Effects of host abundance on larch budmoth outbreaks in the European Alps. Agricultural and Forest Entomology 19 (4), S. 376-387. DOI: 10.1111/afe.12216
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Grimm, D.; Roqueiro, D.; Salomé, P.; Kleeberger, S.; Greshake, B.; Zhu, W.; Liu, C.; Lippert, C.; Stegle, O.; Schölkopf, B.; Weigel, D.; Borgwardt, K. (2017): easyGWAS: A Cloud-Based Platform for Comparing the Results of Genome-Wide Association Studies. The Plant Cell 29 (1). DOI: 10.1105/tpc.16.00551
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The ever-growing availability of high-quality genotypes for a multitude of species has enabled researchers to explore the underlying genetic architecture of complex phenotypes at an unprecedented level of detail using genome-wide association studies (GWAS). The systematic comparison of results obtained from GWAS of different traits opens up new possibilities, including the analysis of pleiotropic effects. Other advantages that result from the integration of multiple GWAS are the ability to replicate GWAS signals and to increase statistical power to detect such signals through meta-analyses. In order to facilitate the simple comparison of GWAS results, we present easyGWAS, a powerful, species-independent online resource for computing, storing, sharing, annotating, and comparing GWAS. The easyGWAS tool supports multiple species, the uploading of private genotype data and summary statistics of existing GWAS, as well as advanced methods for comparing GWAS results across different experiments and data sets in an interactive and user-friendly interface. easyGWAS is also a public data repository for GWAS data and summary statistics and already includes published data and results from several major GWAS. We demonstrate the potential of easyGWAS with a case study of the model organism Arabidopsis thaliana, using flowering and growth-related traits.

Bender, M.; Thielen, C.; Westphal, S. (2017): Online Interval Scheduling with a Bounded Number of Failures. Journal of Scheduling 20, S. 443-457. DOI: 10.1007/s10951-016-0506-9
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Graef, F.; Uckert, G.; Schindler, J.; König, H.; Mbwana, H.; Faße, A.; Mwinuka, L.; Mahoo, H.; Kaburire, L.; Saidia, P.; Yustas, Y.; Silayo, V.; Makoko, B.; Kissoly, L.; Lambert, C.; Kimaro, A.; Sieber, S.; Hoffmann, H.; Kahimba, F.; Mutabazi, K. (2017): Expert-based ex-ante assessments of potential social, ecological, and economic impacts of upgrading strategies for improving food security in rural Tanzania using the ScalA-FS approach. Food Security 9, S. 1255-1270. DOI: 10.1007/s12571-016-0639-x
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Hauk, S.; Gandorfer , M.; Wittkopf, S.; Müller, U.; Knoke, T. (2017): Ecological diversification is risk reducing and economically profitable – The case of biomass production with short rotation woody crops in south German land-use portfolios. Biomass and Bioenergy 98, S. 142-152. DOI: 10.1016/j.biombioe.2017.01.018
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Schelenz, S.; Vienken, T.; Shao, H.; Firmbach, L. (2017): On the importance of a coordinated site characterization for the sustainable intensive thermal use of the shallow subsurface in urban areas – a case study. Environmental Earth Sciences 76, 73 (2), S. 1-15. DOI: 10.1007/s12665-016-6331-9
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Gueting, N.; Vienken, T.; Klotzsche, A.; van der Kruk, J.; Vanderborght, J.; Caers, J.; Vereecken, H.; Englert, A. (2017): High resolution aquifer characterization using crosshole GPR full-waveform tomography: Comparison with direct-push and tracer test data. Water Resources Research 53 (1), S. 49-72. DOI: 10.1002/2016WR019498
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Vienken, T.; Huber, E.; Kreck, M.; Huggenberger, P.; Dietrich, P. (2017): How to chase a tracer – combining conventional salt tracer testing and direct push electrical conductivity profiling for enhanced aquifer characterization. Advances in Water Resources 99, S. 60-66. DOI: 10.1016/j.advwatres.2016.11.010
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Seren, Ü.; Grimm, D.; Fitz, J.; Weigel, D.; Nordborg, M.; Borgwardt, K.; Korte, A. (2017): AraPheno: a public database for Arabidopsis thaliana phenotypes. Nucleic Acids Research 45 (D1), S. D1054-D1059. DOI: 10.1093/nar/gkw986
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2016

Chytrý, M.; Hennekens, S.; Jiménez-Alfaro, B.; Knollová, I.; Dengler, J.; Jansen, .; Landucci, F.; Schaminée, J.; Acic, S.; Agrillo, E.; Ambarli, D.; Angelini, P.; Apostolova, I.; Attorre, F.; Berg, C.; Bergmeier, E.; Biurrun, I.; Botta-Dukát, Z.; Brisse, H.; Antonio Campos, J.; Carlón, L.; Carni, A.; Casella, L.; Csiky, J.; Ćušterevska, R.; Dajić Stevanović, Z.; Danihelka, J.; De Bie, E.; de Ruffray, P.; De Sanctis, M.; Dickoré, W.; Dimopoulos, P.; Dubyna, D.; Dziuba, T.; Ejrnæs, R.; Ermakov, N.; Ewald, J.; et. al., . (2016): European Vegetation Archive (EVA): an integrated database of European vegetation plots. Applied Vegetation Science 19 (1), S. 173-180. DOI: 10.1111/avsc.12191
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Ewald, J.; Pyttel, P. (2016): Leitbilder, Möglichkeiten und Grenzen der De-Eutrophierung von Wäldern in Mitteleuropa. Natur und Landschaft 91, S. 211-217.

Die Verschneidung von Waldartenlisten, Ellenberg-Zeigerwerten und Roten Listen von Gefäßpflanzen zeigt, dass Stickstoff-(N)-Eutrophierung eine der wichtigsten Gefährdungsursachen für Waldarten und Waldlebensräume in Mitteleuropa ist. Orientiert an den charakteristischen Niveaus der N-Versorgung im Zuge der nacheiszeitlichen Vegetationsentwicklung werden funktionsorientierter Waldbau (industrielle), Arten- und Biotopschutz (präindustrielle), Prozessschutz (prähistorische) und Standortdynamik (postglaziale Referenzperiode) als sich ergänzende Leitbilder für das naturschutzfachliche Management nährstoffarmer Waldstandorte und ihrer Lebensgemeinschaften diskutiert. Prozessschutz, ökologischer Waldumbau, verstärkte Holznutzung, historische Waldnutzungsformen (Waldweide, Streunutzung) und Primärsukzessionen werden im Hinblick auf ihre Wirksamkeit gegen Eutrophierung und ihre Machbarkeit bewertet. Angesichts anhaltend hoher N-Einträge aus Landwirtschaft und Verbrennungsprozessen ist neben Maßnahmen zur Verringerung der Einträge sowie zur Erhöhung des Aufnahme- und Speichervermögens für die Erhaltung bestimmter Waldarten und -lebensräume auf bemessenen Flächen eine N-Abreicherung durch Eingriffe in Biomasse, Böden und Nährstoffkreisläufe erforderlich, wie sie in der Pflege und Renaturierung von magerem Grünland bereits üblich ist.

Peterka, T.; Hájek, M.; Jirousek, M.; Jiménez-Alfaro, B.; ..., ..; Ewald, J. (2016): Formalized classification of European fen vegetation at the alliance level. Applied Vegetation Science 20, S. 124-142. DOI: 10.1111/avsc.12271
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Kraus, C.; Zang, C.; Menzel, A. (2016): Elevational response in leaf and xylem phenology reveals different prolongation of growing period of common beech and Norway spruce under warming conditions in the Bavarian Alps. European Journal of Forest Research 135, S. 1011-1023. DOI: 10.1007/s10342-016-0990-7
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Wenban-Smith, H.; Faße, A.; Grote, U. (2016): Food security in Tanzania: The challenge of rapid urbanization. Food Security 8 (5), S. 973-984. DOI: 10.1007/s12571-016-0612-8
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McGaughran, A.; Rödelsperger, C.; Grimm, D.; Meyer, J.; Moreno, E.; Morgan, K.; Leaver, M.; Serobyan, V.; Rakitsch, B.; Borgwardt, K.; Sommer, R. (2016): Genomic profiles of diversification and genotype-phenotype association in island nematode lineages. Molecular Biology and Evolution 33 (9), S. 2257-2272. DOI: 10.1093/molbev/msw093
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Zheng, T.; Shao, H.; Schelenz, S.; Hein, P.; Vienken, T.; Pang, Z.; Kolditz, O.; Nagel, T. (2016): Efficiency and economic analysis of utilizing latent heat from groundwater freezing in the context of borehole heat exchanger coupled ground source heat pump systems. Applied Thermal Engineering 105, S. 314-326. DOI: 10.1016/j.applthermaleng.2016.05.158
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Chassein, A.; Krumke, S.; Thielen, C. (2016): Capacitated Network Design Games with Weighted Players. Networks 68 (2), S. 141-158. DOI: 10.1002/net.21689
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Alonso-Blanco, C.; .., ..; Grimm, D.; .., ..; Weigel, D.; Zhou, X. (2016): 1,135 Genomes Reveal the Global Pattern of Polymorphism in Arabidopsis thaliana. Cell 166 (2), S. 481-491. DOI: 10.1016/j.cell.2016.05.063
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Hausmann, J.; Dietrich, P.; Vienken, T.; Werban, U. (2016): Technique, analysis routines, and application of direct push driven in situ color logging. Environmental Earth Sciences 75, 957 (11), S. 1-21. DOI: 10.1007/s12665-016-5515-7
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Holzhauser, M.; Krumke, S.; Thielen, C. (2016): Maximum Flows in Generalized Processing Networks. Journal of Combinatorial Optimization 33 (4), S. 1226-1256. DOI: 10.1007/s10878-016-0031-y
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Chirila, M.; Christoph, B.; Vienken, T.; Dietrich, P.; Bumberger, J. (2016): Development of an in-situ thermal conductivity measurement system for exploration of the shallow subsurface. Measurement Science and Technology 27 (6). DOI: 10.1088/0957-0233/27/6/065901
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Holzhauser, M.; Krumke, S.; Thielen, C. (2016): Budget-Constrained Minimum Cost Flows. Journal of Combinatorial Optimization 31 (4), S. 1720-1745. DOI: 10.1007/s10878-015-9865-y
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Khatri-Karki, S.; Faße, A.; Grote, U. (2016): The role of standards in domestic food value chains in Sub-Saharan Africa: A review article. African Journal of Horticultural Sciences (AJHS) 9, S. 41-53.

Thielen, C.; Tiedemann, M.; Westphal, S. (2016): The Online Knapsack Problem with Incremental Capacity. Mathematical Methods of Operations Research 83 (2), S. 207-242. DOI: 10.1007/s00186-015-0526-9
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Seibertz, K.; Chirila, M.; Bumberger, J.; Dietrich, P.; Vienken, T. (2016): Development of in-aquifer heat testing for high resolution subsurface thermal-storage capability characterisation. Journal of Hydrology 534, S. 113-123. DOI: 10.1016/j.jhydrol.2015.12.013
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Hauck, J.; Albert, C.; Fürst, C.; Geneletti, D.; La Rosa, D.; Lorz, C.; Spyra, M. (2016): Editorial: Developing and Applying Ecosystem Services Indicators in Decision-Support at Various Scales. Ecological Indicators 61 (1), S. 1-5. DOI: 10.1016/j.ecolind.2015.09.037
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Annighöfer, P.; Ameztegui, A.; Ammer, C.; Balandier, P.; Bartsch, N.; Bolte, A.; Coll, L.; Collet, C.; Ewald, J.; Frischbier, N.; Gebereyesus, T.; Haase, J.; Hamm, T.; Hirschfelder, B.; Huth, F.; Kändler, G.; Kahl, A.; Kawaletz, H.; Kuehne, C.; Lacointe, A.; Lin, N.; Löf, M.; Malagoli, P.; Marquier, A.; Müller, S.; Promberger, S.; Provendier, D.; Röhle, H.; Sathornkich, J.; Schall, P.; Scherer-Lorenzen, M.; Schröder, J.; Seele, C.; Weidig, J.; Wirth, C.; Wolf, H.; Wollmerstädt, J.; Mund, M. (2016): Species-specific and generic biomass equations for seedlings and saplings of European tree species. European Journal of Forest Research 135, S. 313-329. DOI: 10.1007/s10342-016-0937-z
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2015

Rossetto, R.; Barbagli, A.; Borsi, I.; Mazzanti, G.; Vienken, T.; Bonari, E. (2015): Site investigation and design of the monitoring system at the Sant`Alessio Induced RiverBank Filtration plant (Lucca, Italy). Rendiconti Online della Società Geologica Italiana 35, S. 248-251. DOI: 10.3301/ROL.2015.112
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Ewald, J.; Endres, U. (2015): Waldvegetation der Sassau im Walchensee: Vergleich von Naturwald und Wirtschaftswald, Insel und Halbinsel. Tuexenia 35, S. 131-153. DOI: 10.14471/2015.35.013
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De Cáceres, M.; Chytrý, M.; Agrillo, E.; Attorre, F.; Botta-Dukát, Z.; Capelo, J.; Czúcz, B.; Dengler, J.; Ewald, J.; Faber-Langendoen, D.; Feoli, E.; Franklin, S.; Gavilán, R.; Gillet, F.; Jansen, F.; Jiménez-Alfaro, B.; Krestov, P.; Landucci, F.; Lengyel, A.; Loidi, J.; Mucina, L.; Peet, R.; Roberts, D.; Roleček, J.; Schaminée, J.; Schmidtlein, S.; Theurillat, J.; Tichý, L.; Walker, D.; Wildi, O.; Willner, W.; Wiser, S. (2015): A comparative framework for broad-scale plot-based vegetation classification. Applied Vegetation Science 18 (4), S. 543-560. DOI: 10.1111/avsc.12179
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Jansen, F.; Ewald, J.; Jandt, U. (2015): Vegetweb 2.0 –Neuauflage eines Vegetationsdatenportals für Deutschland. Tuexenia 35, S. 309-319. DOI: 10.14471/2015.35.015
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Mellert, K.; Ewald, J.; Hornstein, D.; Dorado-Liñán, I.; Jantsch, M.; Täger, S.; Zang, C.; Menzel, A.; Kölling, C. (2015): Climatic marginality: a new metric for the susceptibility of tree species to warming exemplified by Fagus sylvatica (L.) and Ellenberg’s quotient. European Journal of Forest Research 135, S. 137-152. DOI: 10.1007/s10342-015-0924-9
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Zang, C.; Helm, R.; Sparks, T.; Menzel, A. (2015): Forecasting bark beetle early flight activity with plant phenology. Climate Research 66, S. 161-170. DOI: 10.3354/cr01346
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Cook, E.; Seager, R.; Kushnir, Y.; Briffa, K.; Büntgen, U.; Frank, D.; Krusic, P.; Tegel, W.; van der Schrier, G.; Andreu-Hayles, L.; Baillie, M.; Baittinger, C.; Bleicher, N.; Bonde, N.; Brown, D.; Carrer, M.; Cooper, R.; Cufar, K.; Dittmar, C.; Esper, J.; Griggs, C.; Gunnarson, B.; Günther, B.; Gutiérrez, E.; Haneca, K.; Helama, S.; Herzig, F.; Heussner, K.; Hofmann, J.; Janda, P.; Kontic, R.; Köse, N.; Kyncl, T.; Levanič, T.; Linderholm, H.; Manning, S.; Melvin, T.; Miles, D.; Neuwirth, B.; Nicolussi, K.; Nola, P.; Panayotov, M.; Popa, I.; Rothe, A.; Seftigen, K.; Seim, A.; Svarva, H.; Svoboda, M.; Thun, T.; Timonen, M.; Touchan, R.; Trotsiuk, V.; Trouet, V.; Walder, F.; Wazny, T.; Wilson, R.; Zang, C. (2015): Old World megadroughts and pluvials during the Common Era. Science Advances 1 (10). DOI: 10.1126/sciadv.1500561
mehr   Open Access

Eduati, F.; Mangravite, L.; .., ..; Grimm, D.; .., ..; Saez-Rodriguez, J. (2015): Prediction of human population responses to toxic compounds by a collaborative competition. Nature Biotechnology 33, S. 933-940. DOI: 10.1038/nbt.3299
mehr   Open Access

Wilnhammer, M.; Lubenau, C.; Wittkopf, S.; Richter, K.; Weber-Blaschke, G. (2015): Effects of increased wood energy consumption on global warming potential, primary energy demand and particulate matter emissions on regional level based on the case study area Bavaria (Southeast Germany). Biomass and Bioenergy 81, S. 190-201. DOI: 10.1016/j.biombioe.2015.06.025
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Rothe, A.; Moroni, M.; Neyland, M.; Wilnhammer, M. (2015): Current and potential use of forest biomass for energy in Tasmania. Biomass and Bioenergy 80, S. 162-172. DOI: 10.1016/j.biombioe.2015.04.021
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Graef, F.; Schneider, I.; Faße, A.; Gremer, J.; Gevorgyan, E.; Haule, F.; Hoffmann, H.; Kahimba, F.; Kashaga, L.; Kissoly, L.; Lambert, C.; Lana, M.; Mahoo, H.; Makoko, B.; Mbaga, S.; Mmbughu, A.; Mrosso, L.; Mutabazi, K.; Mwinuka, L.; Ngazi, H.; Nkonya, E.; Reif, C.; Said, S.; Schaffert, A.; Schaefer, M.; Schindler, J.; Sieber, S.; Swamila, M.; Welp, H.; William, L.; Yustas, Y. (2015): Assessment of upgrading strategies to improve regional food security in Tanzania: Food Processing, waste management and bioenergy, and income generation. Outlook on Agriculture 44 (3), S. 179-186(8). DOI: 10.5367%2Foa.2015.0209
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Kaphegyi, T.; Christoffers,, Y.; Schwab, S.; Zahner, V.; Konold, W. (2015): Media portrayal of beaver (Castor fiber) related conflicts as an indicator of changes in EU-policies relevant to freshwater conservation. Land Use Policy 47, S. 468-472. DOI: 10.1016/j.landusepol.2015.04.014
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In many European countries, the condition of the majority of waters still does not meet advanced ecological standards. In this context, conservation of riparian habitats is of particular importance. A recently increasing demand for cultivable land led to changes in the EU's subsidy policies. We argue that these changes to land use policies can affect aquatic–terrestrial intersections. We used media reporting on beaver-related aspects as a parameter for conflict potentials within riparian habitats. We detected a considerable increase in conflicts occurring concurrently with the re-intensification of agricultural land use. Our results provide cause for concern that recent tendencies in land use in the EU might have destructive impacts on freshwater ecosystems.

Holzhauser, M.; Krumke, S.; Thielen, C. (2015): Convex Generalized Flows. Discrete Applied Mathematics 190-191, S. 86-99. DOI: 10.1016/j.dam.2015.03.021
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Bender, M.; Thielen, C.; Westphal, S. (2015): Packing Items Into Several Bins Facilitates Approximating the Separable Assignment Problem. Information Processing Letters 115 (6-8), S. 570-575. DOI: 10.1016/j.ipl.2015.02.001
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Llinares-López, F.; Grimm, D.; Bodenham, D.; Gieraths, U.; Sugiyama, M.; Rowan, B.; Borgwardt, K. (2015): Genome-wide detection of intervals of genetic heterogeneity associated with complex traits. Bioinformatics 31 (12), S. i240-i249. DOI: 10.1093/bioinformatics/btv263
 mehr   Open Access

Motivation: Genetic heterogeneity, the fact that several sequence variants give rise to the same phenotype, is a phenomenon that is of the utmost interest in the analysis of complex phenotypes. Current approaches for finding regions in the genome that exhibit genetic heterogeneity suffer from at least one of two shortcomings: (i) they require the definition of an exact interval in the genome that is to be tested for genetic heterogeneity, potentially missing intervals of high relevance, or (ii) they suffer from an enormous multiple hypothesis testing problem due to the large number of potential candidate intervals being tested, which results in either many false positives or a lack of power to detect true intervals.

Results: Here, we present an approach that overcomes both problems: it allows one to automatically find all contiguous sequences of single nucleotide polymorphisms in the genome that are jointly associated with the phenotype. It also solves both the inherent computational efficiency problem and the statistical problem of multiple hypothesis testing, which are both caused by the huge number of candidate intervals. We demonstrate on Arabidopsis thalianagenome-wide association study data that our approach can discover regions that exhibit genetic heterogeneity and would be missed by single-locus mapping.

Conclusions: Our novel approach can contribute to the genome-wide discovery of intervals that are involved in the genetic heterogeneity underlying complex phenotypes.

Availability and implementation: The code can be obtained at: http://www.bsse.ethz.ch/mlcb/research/bioinformatics-and-computational-biology/sis.html.

Hickey, J.; Neyland, M.; Rothe, A.; Bauhus, J. (2015): Is continuous-cover silviculture, as practised in Bavaria, suitable for use in wet eucalypt forests in Tasmania, Australia? Australian Forestry 78 (1), S. 29-44. DOI: 10.1080/00049158.2015.1037815
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Graef, F.; Schneider, I.; Faße, A.; Germer, J.; Gevorgyan, E.; Haule, F.; Hoffmann, H.; Kahimba, F.; Kashaga, L.; Kissoly, L.; Lambert, C.; Lana, M.; Mahoo, H.; Makoko, B.; Mbaga, S.; Mmbughu, A.; Mkangwa, S.; Mrosso, L.; Mutabazi, K.; Schindler, J.; Sieber, S.; Swamila, M.; Welp, H.; William, L.; Yustas, Y. (2015): Natural resource management and crop production strategies to improve regional food systems in Tanzania. Outlook on Agriculture 44 (2). DOI: 10.5367%2Foa.2015.0206
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Reger, B.; Göttlein, A.; Ewald, J. (2015): Assessing the Sensitivity of Mountain Forests to Site Degradation in the Northern Limestone Alps, Europe. Mountain Research and Development 35 (2), S. 139-151. DOI: 10.1659/MRD-JOURNAL-D-14-00094.1
 mehr   Open Access

Because of some land-use practices (such as overstocking with wild ungulates, historical clear-cuts for mining, and locally persisting forest pasture), protective forests in the montane vegetation belt of the Northern Limestone Alps are now frequently overaged and poorly structured over large areas. Windthrow and bark beetle infestations have generated disturbance areas in which forests have lost their protective functions. Where unfavorable site conditions hamper regeneration for decades, severe soil loss may ensue. To help prioritize management interventions, we developed a geographic information system-based model for assessing sensitivity to site degradation and applied it to 4 test areas in the Northern Limestone Alps of Austria and Bavaria. The model consists of (1) analysis of site conditions and forest stand structures that could increase sensitivity to degradation, (2) evaluation of the sensitivity of sites and stands, and (3) evaluation and mapping of mountain forests' sensitivity to degradation. Site conditions were modeled using regression algorithms with data on site parameters from pointwise soil and vegetation surveys as responses and areawide geodata on climate, relief, and substrate as predictors. The resulting predictor–response relationships were applied to test areas. Stand structure was detected from airborne laser scanning data. Site and stand parameters were evaluated according to their sensitivity to site degradation. Sensitivities of sites and stands were summarized in intermediate-scale sensitivity maps. High sensitivity was identified in 3 test areas with pure limestone and dolomite as the prevailing sensitivity level. Moderately sensitive forests dominate in the final test area, Grünstein, where the bedrock in some strata contains larger amounts of siliceous components (marl, mudstone, and moraines); degraded and slightly sensitive forests were rare or nonexistent in all 4 test areas. Providing a comprehensive overview of site and forest stand structure sensitivity to site degradation, our sensitivity maps can serve as a planning instrument for the management and protection of mountain forests.

Zang, C.; Biondi, F. (2015): treeclim: an R package for the numerical calibration of proxy-climate relationships. Ecography 38 (4), S. 431-436. DOI: 10.1111/ecog.01335
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Hauk, S.; Skibbe, K.; Röhle, H.; Schröder, J.; Wittkopf, S.; Knoke, T. (2015): Nondestructive Estimation of Biomass Yield for Short-Rotation Woody Crops Is Reliable and Shows High Yields for Commercial Stands in Bavaria. BioEnergy Research 8 (3), S. 1401-1413. DOI: 10.1007/s12155-015-9602-5
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Menzel, A.; Helm, R.; Zang, C. (2015): Patterns of late spring frost leaf damage and recovery in a European beech (Fagus sylvatica L.) stand in south-eastern Germany based on repeated digital photographs. Frontiers in Plant Science 6, 110, S. 1-13. DOI: 10.3389/fpls.2015.00110
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Grimm, D.; Azencott, C.; Aicheler, F.; Gieraths, U.; MacArthur, D.; Samocha, K.; Cooper, D.; Stenson, P.; Smoller, J.; Duncan, L.; Borgwardt, K. (2015): The evaluation of tools used to predict the impact of missense variants is hindered by two types of circularity. Human Mutation 36 (5), S. 513-523. DOI: 10.1002/humu.22768
 mehr   Open Access

Prioritizing missense variants for further experimental investigation is a key challenge in current sequencing studies for exploring complex and Mendelian diseases. A large number of in silico tools have been employed for the task of pathogenicity prediction, including PolyPhen‐2, SIFT, FatHMM, MutationTaster‐2, MutationAssessor, Combined Annotation Dependent Depletion, LRT, phyloP, and GERP++, as well as optimized methods of combining tool scores, such as Condel and Logit. Due to the wealth of these methods, an important practical question to answer is which of these tools generalize best, that is, correctly predict the pathogenic character of new variants. We here demonstrate in a study of 10 tools on five datasets that such a comparative evaluation of these tools is hindered by two types of circularity: they arise due to (1) the same variants or (2) different variants from the same protein occurring both in the datasets used for training and for evaluation of these tools, which may lead to overly optimistic results. We show that comparative evaluations of predictors that do not address these types of circularity may erroneously conclude that circularity confounded tools are most accurate among all tools, and may even outperform optimized combinations of tools.

Faße, A.; Winter, E. (2015): Food grows on women’s trees. In FAO (2015): Enhancing gender equality in the management of Africa’s natural resources. Nature & Faune 29 (1), S. 54-59.

Zang, C. (2015): Dendrobox – An interactive exploration tool for the International Tree Ring Data Bank. Dendrochronologia 33, S. 31-33. DOI: 10.1016/j.dendro.2014.10.002
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Wang, C.; Liu, C.; Roqueiro, D.; Grimm, D.; Schwab, R.; Becker, C.; Lanz, C.; Weigel, D. (2015): Genome-wide analysis of local chromatin packing in Arabidopsis thaliana. Genome Research 25, S. 246-256. DOI: 10.1101/gr.170332.113
mehr   Open Access

Hartl-Meier, C.; Zang, C.; Büntgen, U.; Esper, J.; Rothe, A.; Göttlein, A.; Dirnböck, T.; Treydte, K. (2015): Uniform climate sensitivity in tree-ring stable isotopes across species and sites in a mid-latitude temperate forest. Tree Physiology 35 (1), S. 4-15. DOI: 10.1093/treephys/tpu096
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Liu, H.; Bruelheide, H.; Ewald, J.; Chytrý, M. (2015): Temperate forests in continental East Asia. Applied Vegetation Science 18 (1), S. 3-4. DOI: 10.1111/avsc.12147
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2014

Vienken, T.; Kreck, M.; Hausmann, J.; Werban, U.; Dietrich, P. (2014): Innovative strategies for high resolution site characterization: application to a flood plain. Acque Sotterranee (Italian Journal of Groundwater) 3 (4), S. 7-14. DOI: 10.7343/as-091-14-0118
mehr   Open Access

Ewald, J.; Braun, L.; Zeppenfeld, T.; Jehl, H.; Heurich, M. (2014): Estimating the distribution of forage mass for ungulates from vegetation plots in Bavarian Forest National Park. Tuexenia 34, S. 53-70. DOI: 10.14471/2014.34.006
mehr   Open Access

Seegert, j.; Berendonk, T.; Blumensaat, F.; Dombrowsky, I.; Fühner, C.; Grundmann, J.; Hagemann, N.; Kalbacher, T.; Kopinke, F.; Liedl, R.; Leidel, M.; Lorz, C.; Makeschin, F.; Markova, D.; Weiß, H.; et. al., . (2014): Integrated water resources management under different hydrological, climatic and socio-economic conditions: results and lessons learned from a transdisciplinary IWRM project IWAS. Environmental Earth Sciences 72 (12), S. 4673-4675. DOI: 10.1007/s12665-014-3877-2
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Faße, A.; Winter, E.; Grote, U. (2014): Bioenergy and Rural Development: The Role of Agroforestry in a Tanzanian Village Economy. Ecological Economics 106, S. 155-166. DOI: 10.1016/j.ecolecon.2014.07.018
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Vienken, T.; Dietrich, P. (2014): Comment on “Determination of Hydraulic Conductivity from Grain-Size Distribution for Different Depositional Environments”. Groundwater 52 (6), S. 823-824. DOI: 10.1111/gwat.12278
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Winter, E.; Faße, A.; Frohberg, K. (2014): Food security, Energy Equity, and the Global Commons: a Computable Village Model applied to sub-Saharan Africa. Regional Environmental Change 15 (7), S. 1215-1227. DOI: 10.1007/s10113-014-0674-0
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Hauk, S.; Wittkopf, S.; Knoke, T. (2014): Analysis of commercial short rotation coppices in Bavaria, southern Germany. Biomass and Bioenergy 67, S. 401–412. DOI: 10.1016/j.biombioe.2014.05.027
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Franz, C.; Abbt-Braun, G.; Lorz, C.; Roig, H.; Makeschin, F. (2014): Assessment and evaluation of metal contents in sediment and water samples within an urban watershed: an analysis of anthropogenic impacts on sediment and water quality in Central Brazil. Environmental Earth Sciences 72 (12), S. 4873-4890. DOI: 10.1007/s12665-014-3454-8
mehr

Rogiers, B.; Vienken, T.; Gedeon, M.; Batelaan, O.; Mallants, D.; Huysmans, M.; Dassargues, A. (2014): Multi-scale aquifer characterization and groundwater flow model parameterization using direct push technologies. Environmental Earth Sciences 72 (5), S. 1303-1324. DOI: 10.1007/s12665-014-3416-1
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Hartl-Meier, C.; Zang, C.; Dittmar, C.; Esper, J.; Göttlein, A.; Rothe, A. (2014): Vulnerability of Norway spruce to climate change in mountain forests of the European Alps. Climate Research 60 (2), S. 119-132. DOI: 10.3354/cr01226
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Wu, X.; Babst, F.; Ciais, P.; Frank, D.; Reichstein, M.; Wattenbach, M.; Zang, C.; Mahecha, M. (2014): Climate-mediated spatiotemporal variability in terrestrial productivity across Europe. Biogeosciences 11 (11), S. 3057-3068. DOI: 10.5194/bg-11-3057-2014
mehr   Open Access

Hartl-Meier, C.; Dittmar, C.; Zang, C.; Rothe, A. (2014): Mountain forest growth response to climate change in the Northern Limestone Alps. Trees 28 (3), S. 819-829. DOI: 10.1007/s00468-014-0994-1
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La Rosa, D.; Lorz, C.; König, H.; Fürst, C. (2014): Spatial information and participation in socio-eco-logical systems: experiences, tools and lessons learned for land-use planning - Editorial. iForest - Biogeosciences and Forestry 7 (6), S. 349-352. DOI: 10.3832/ifor0093-007
mehr   Open Access

Zang, C.; Hartl-Meier, C.; Dittmar, C.; Rothe, A.; Menzel, A. (2014): Patterns of drought tolerance in major European temperate forest trees: climatic drivers and levels of variability. Global Change Biology 20 (12), S. 3767-3779. DOI: 10.1111/gcb.12637
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Vienken, T.; Schelenz, S.; Rink, K.; Dietrich, P. (2014): Sustainable Intensive Thermal Use of the Shallow Subsurface—A Critical View on the Status Quo. Groundwater 53 (3), S. 356-361. DOI: 10.1111/gwat.12206
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Reger, B.; Ewald, J. (2014): Indikatorarten für nährstoffarme Standorte in den Bergwäldern der Bayerischen Alpen. Tuexenia (34), S. 39-51. DOI: 10.14471/2014.34.010
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In den Bergwäldern der Bayerischen Alpen sind Standorte mit geringer Nachlieferung von N, P und K, z. T. auch von Mg und Ca weit verbreitet. Um diese gegenüber Biomassenutzung empfindlichen Standorte im Gelände zu erkennen, können Pflanzenarten der Bodenvegetation als Indikatoren genutzt werden. Ziel unserer Arbeit war es, anhand einer umfangreichen Vegetations- und Bodendatenbank Indikatorarten für nährstoffarme Waldstandorte in den Bayerischen Alpen zu ermitteln. Mit Hilfe einer Indikatorartenanalyse wurden insgesamt 745 verschiedene Gefäßpflanzenarten und die Torfmoose (auf Gattungsebene zusammengefasst) auf ihre Eignung als Indikatorarten überprüft. Dazu wurden insgesamt 1.496 durch Vegetationsaufnahmen und Bodenprofilansprachen gekennzeichnete Waldstandorte hinsichtlich ihrer Nährstoffversorgung eingestuft und ausgewertet. Potentilla erecta, Vaccinium vitisidaea, Homogyne alpina und Huperzia selago wurden als allgemeine Indikatorarten für nährstoffarme Standorte ermittelt. Vorkommen von Vaccinium myrtillus (Deckung ≥ 5 %) sowie Vorkommen von Juncus effusus, Luzula sylvatica und Luzula pilosa weisen auf nährstoffarme, tiefgründig versauerte Mineralböden mit Auflagehumus hin, während Calamagrostis varia, Sesleria albicans, Melampyrum sylvaticum, Aster bellidiastrum und Anthoxanthum odoratum eng an nährstoffarme kalkreiche Standorte gebunden sind. Die dargestellten Indikatorarten wurden speziell für die nährstoffarmen Waldstandorte der Bayerischen Alpen zusammengestellt. Sie ermöglichen ohne viel Sach- und Zeitaufwand im Gelände eine Ansprache von nährstoffarmen Waldstandorten, deren Nährstoffangebot aus Standortskarten nur grob eingeschätzt werden kann.

Walentowski, H.; Kudernatsch, T.; Fischer, A.; Ewald, J. (2014): Naturwaldreservatsforschung in Bayern - Auswertung von Vegetationsdaten zur waldökologischen Dauerbeobachtung. Tuexenia 34, S. 89-106. DOI: 10.14471/2014.34.007
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Fischer, H.; Michler, B.; Ewald, J. (2014): Environmental, spatial and structural components in the composition of mountain forest in the Bavarian Alps. Folia Geobotanica 49 (3), S. 361-384. DOI: 10.1007/s12224-013-9185-x
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Oliveira, V.; Makeschin, F.; Sano, E.; Lorz, C. (2014): Physical and chemical analyses of bare soil sites in Western Central Brazil: a case study. Environmental Earth Sciences 72, S. 4863-4871. DOI: 10.1007/s12665-014-3103-2
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Graef, F.; Sieber, S.; Mutabazi, K.; Asch, F.; Biesalski, H.; Bitegekof, J.; Bokelmann, W.; Bruentrup, M.; Dietrich, O.; Elly, N.; Faße, A.; Germer, J.; Grote, U.; Herrmann, L.; Herrmann, R.; Hoffmann, H.; Kahimba, F.; Kaufmann, B.; Kersebaum, K.; Kilembe, C.; Kimaro, A.; Kinabo, J.; König, B.; König, H.; Lana, M.; Levy, C.; Lyimo-Macha, J.; Makoko, B.; Mazoko, G.; Mbaga, S.; Mbogoro, W.; Milling, H.; Mtambo, K.; Mueller, J.; Mueller, C.; Mueller, K.; Nkonya, E.; Reif, C.; Ringler, C.; Ruvuga, S.; Schaefer, M.; Sikira, A.; Silayo, V.; Stahr, K.; Swai, E.; Tumbo, S.; Uckert, G. (2014): Framework for participatory food security research in rural food value chains. Global Food Security 3 (1), S. 8-15. DOI: 10.1016/j.gfs.2014.01.001
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Ewald, J.; Hédl, R. (2014): Spatial Modeling of Vegetation Potential: An Introduction. Folia Geobotanica 49, S. 309-312. DOI: 10.1007/s12224-013-9188-7
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Koschke, L.; Lorz, C.; Fürst, C.; Lehmann, T.; Makeschin, F. (2014): Assessing hydrological and provisioning ecosystem services in a case study in Western Central Brazil. Ecological Processes 3, 2. DOI: 10.1186/2192-1709-3-2
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Lang, P.; Ewald, J. (2014): Predictive modeling and monitoring of Ellenberg moisture value validates restoration success in floodplain forests. Applied Vegetation Science 17 (3), S. 543-555. DOI: 10.1111/avsc.12089
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Hauk, S.; Knoke, T.; Wittkopf, S. (2014): Economic evaluation of short rotation coppice systems for energy from biomass—A review. Renewable and Sustainable Energy Reviews 29, S. 435-448. DOI: 10.1016/j.rser.2013.08.103
mehr

Ewald, J. (2014): Nutrient limitation and site-related growth potential of Norway spruce (Picea abies [L.] Karst) in the Bavarian Alps. European Journal of Forest Research 133, S. 433-451. DOI: 10.1007/s10342-013-0775-1
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Franz, C.; Makeschin, F.; Weiß, H.; Lorz, C. (2014): Sediments in urban river basins: Identification of sediment sources within the Lago Paranoá catchment, Brasilia DF, Brazil - using the fingerprint approach. Science of the Total Environment 466-467, S. 513-523. DOI: 10.1016/j.scitotenv.2013.07.056
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2013

Ewald, J.; Hennekens, S.; Conrad, S.; Wohlgemuth, T.; Jansen, F.; Jenssen, M.; Cornelis, J.; Michiels, H.; Kayser, J.; Chytrý, M.; Gégout, J.; Breuer, M.; Abs, C.; Walentowski, H.; Starlinger, F.; Godefroid, S. (2013): Spatial and temporal patterns of Ellenberg nutrient values in forests of Germany and adjacent regions - a survey based on phytosociological databases. Tuexenia 33, S. 93-109.
mehr   Open Access

Lang, P.; Schwab, A.; Stammel, B.; Ewald, J.; Kiehl, J. (2013): Long-term vegetation monitoring for different habitats in floodplains. Scientific Annals of the Danube Delta Institute 19 (1), S. 39-48. DOI: 10.7427/DDI.19.06
mehr   Open Access

Huenges, E.; Kohl, T.; Kolditz, O.; Bremer, J.; Scheck-Wenderoth, M.; Vienken, T. (2013): Geothermal energy systems: research perspective for domestic energy provision. Environmental Earth Sciences 70 (8), S. 3927-3933. DOI: 10.1007/s12665-013-2881-2
mehr

Hausmann, J.; Steinel, H.; Kreck, M.; Werban, U.; Vienken, T.; Dietrich, P. (2013): Two-dimensional geomorphological characterization of a filled abandoned meander using geophysical methods and soil sampling. Geomorphology 201, S. 335-343. DOI: 10.1016/j.geomorph.2013.07.009
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Taeger, S.; Zang, C.; Liesebach, M.; Schneck, V.; Menzel, A. (2013): Impact of climate and drought events on the growth of Scots pine (Pinus sylvestris L.) provenances. Forest Ecology and Management 307, S. 30-42. DOI: 10.1016/j.foreco.2013.06.053
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Christophel, D.; Spengler, S.; Schmidt, B.; Ewald, J.; Prietzel, J. (2013): Customary selective harvesting has considerably decreased organic carbon and nitrogen stocks in forest soils of the Bavarian Limestone Alps. Forest Ecology and Management 305, S. 167-176. DOI: 10.1016/j.foreco.2013.05.054
mehr

Vienken, T.; Reboulet, E.; Leven, C.; Kreck, M.; Zschornack, L.; Dietrich, P. (2013): Field comparison of selected methods for vertical soil water content profiling. Journal of Hydrology 501 (0), S. 205-212. DOI: 10.1016/j.jhydrol.2013.08.004
mehr

Lorz, C.; Neumann, C.; Bakker, F.; Pietzsch, K.; Weiß, H.; Makeschin, F. (2013): A web-based planning support tool for sediment management in a meso-scale river basin in Western Central Brazil. Journal of Environmental Management 127 (Supplement), S. S15-S23. DOI: 10.1016/j.jenvman.2012.11.005
mehr

Strauch, M.; Araújob, A.; Lima, J.; Lorz, C.; Volk, M.; Makeschin, F. (2013): The impact of Best Management Practices on simulated streamflow and sediment load in a Central Brazilian catchment. Journal of Environmental Management 127, S. 24-36. DOI: 10.1016/j.jenvman.2013.01.014
mehr

Fürst, C.; Helming, K.; Lorz, C.; Müller, F.; Verburg, P. (2013): Integrated land use and regional resource management – A cross-disciplinary dialogue on future perspectives for a sustainable development of regional resources. Journal of Environmental Management 127, S. 1-5. DOI: 10.1016/j.jenvman.2012.12.015
mehr

Mellert, K.; Ewald, J. (2013): Regionalizing Nutrient Values of Vegetation to Assess Site Fertility of Mountain Forests in the Bavarian Alps. Folia Geobotanica 49 (3), S. 407-423. DOI: 10.1007/s12224-013-9167-z
mehr

Häring, T.; Reger, B.; Ewald, J.; Hothorn, T.; Schröder, B. (2013): Regionalizing Indicator Values for Soil Reaction in the Bavarian Alps – from Averages to Multivariate Spectra. Folia Geobotanica 49, S. 385-405. DOI: 10.1007/s12224-013-9157-1
mehr

Azencott, C.; Grimm, D.; Sugiyama, M.; Kawahara, Y.; Borgwardt, K. (2013): Efficient network-guided multi-locus association mapping with graph cuts. Bioinformatics 29 (13), S. i171-i179. DOI: 10.1093/bioinformatics/btt238
mehr   Open Access

Krumke, S.; Thielen, C. (2013): The Generalized Assignment Problem with Minimum Quantities. European Journal of Operational Research 228 (1), S. 46-55. DOI: 10.1016/j.ejor.2013.01.027
mehr

Reger, B.; Häring, T.; Ewald, J. (2013): The TRM Model of Potential Natural Vegetation in Mountain Forests. Folia Geobotanica 49, S. 337-359. DOI: 10.1007/s12224-013-9158-0
mehr

Franz, C.; Makeschin, F.; Weiß, H.; Lorz, C. (2013): Geochemical signature and properties of sediment sources and alluvial sediments within the Lago Paranoá catchment, Brasilia DF: A study on anthropogenic introduced chemical elements in an urban river basin. Science of the Total Environment 452–453, S. 411-420. DOI: 10.1016/j.scitotenv.2013.02.077
mehr

Schmidtlein, S.; Faude, U.; Rössler, O.; Feilhauer, H.; Ewald, J.; Meyn, A.; Schmidt, J. (2013): Differences between recent and historical records of upper species limits in the northern European Alps. Erdkunde 67 (4), S. 345-354. DOI: 10.3112/erdkunde.2013.04.04
mehr

Pannek, A.; Ewald, J.; Diekmann, M. (2013): Resource-based determinants of range sizes of forest vascular plants in Germany. Global Ecology and Biogeography 22 (8), S. 1019-1028. DOI: 10.1111/geb.12055
mehr

Thielen, C.; Westphal, S. (2013): Complexity and Approximability of the Maximum Flow Problem with Minimum Quantities. Networks 62 (2), S. 125-131. DOI: 10.1002/net.21502
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Grimm, D.; Hagmann, J.; Koenig, D.; Weigel, D.; Borgwardt, K. (2013): Accurate indel prediction using paired-end short reads. BMC Genomics 14, 132. DOI: 10.1186/1471-2164-14-132
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Ewald, J.; Scheßl, A. (2013): Kiefer am Scheideweg: Heidewälder in der nördlichen Münchener Ebene. Tuexenia 33, S. 9-24.
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Zang, C.; Biondi, F. (2013): Dendroclimatic calibration in R: The bootRes package for response and correlation function analysis. Dendrochronologia 31 (1), S. 68-74. DOI: 10.1016/j.dendro.2012.08.001
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Häring, T.; Reger, B.; Ewald, J.; Hothorn, T.; Schröder, B. (2013): Predicting Ellenberg's soil moisture indicator value in the Bavarian Alps using additive georegression. Applied Vegetation Science 16 (1), S. 110-121. DOI: 10.1111/j.1654-109X.2012.01210.x
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2012

Schmidt, M.; Kriebitzsch, W.; Ewald, J. (2012): Anwendungsperspektiven für Waldartenlisten der Gefäßpflanzen, Moose und Flechten Deutschlands. Forstarchiv 83, S. 155-159.

Wilnhammer, M.; Rothe, A.; Weis, W.; Wittkopf, S. (2012): Estimating forest biomass supply from private forest owners: A case study from Southern Germany. Biomass and Bioenergy 47, S. 177-187. DOI: 10.1016/j.biombioe.2012.09.044
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Jansen, F.; Glöckler, F.; Chytrý, M.; De Cáceres, M.; Ewald, J.; Lopez-Gonzalez, G.; Oldeland, J.; Peet, R.; Dengler, J. (2012): News from the Global Index of Vegetation-Plot Databases (GIVD): the metadata platform, available data, and their properties. Biodiversity & Ecology 4, S. 77-82. DOI: 10.7809/b-e.00061
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Reger, B.; Schüpferling, R.; Beck, J.; Dietz, E.; Morovitz, D.; Schaller, R.; Wilhelm, G.; Ewald, J. (2012): WINALPecobase – ecological database of mountain forests in the Bavarian Alps. Biodiversity and Ecology 4, 22, S. 167-171. DOI: 10.7809/b-e.00072
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Ewald, J.; May, R.; Kleikamp, M. (2012): VegetWeb - the national online-repository of vegetation plots from Germany. Biodivesity and Ecology 4, 23, S. 173-175. DOI: 10.7809/b-e.00073
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Ewald, J. (2012): BERGWALD, the vegetation database of mountain forests in the Bavarian Alps. Biodiversity and Ecology 4, 21, S. 161-165. DOI: 10.7809/b-e.00071
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Ewald, J. (2012): Vegetation databases provide a close-up on altitudinal tree species distribution in the Bavarian Alps. Biodiversity and Ecology 4, 8, S. 41-48. DOI: 10.7809/b-e.00058
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Zang, C.; Rothe, A. (2012): Effect of nutrient removal on radial growth of Pinus sylvestris and Quercus petraea in Southern Germany. Annals of Forest Science 70 (2), S. 143-149. DOI: 10.1007/s13595-012-0238-8
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Schütze, C.; Vienken, T.; Werban, U.; Dietrich, P.; Finizola, A.; Leven, C. (2012): Joint application of geophysical methods and Direct Push-soil gas surveys for the improved delineation of buried fault zones. Journal of Applied Geophysics 82, S. 129-136. DOI: 10.1016/j.jappgeo.2012.03.002
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Zahner, V.; Sikora, L.; Pasinelli, G. (2012): Heart rot as a key factor for cavity tree selection in the black woodpecker. Forest Ecology and Management 271, S. 98-103. DOI: 10.1016/j.foreco.2012.01.041
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Thielen, C.; Westphal, S. (2012): Approximation Algorithms for TTP(2). Mathematical Methods of Operations Research 76 (1), S. 1-20. DOI: 10.1007/s00186-012-0387-4
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Zang, C.; Pretzsch, H.; Rothe, A. (2012): Size-dependent responses to summer drought in Scots pine, Norway spruce and common oak. Trees 26 (2), S. 557-569. DOI: 10.1007/s00468-011-0617-z
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Dittmar, C.; Eißing, T.; Rothe, A. (2012): Elevation-specific tree-ring chronologies of Norway spruce and Silver fir in Southern Germany. Dendrochronologia 30 (2), S. 73-83. DOI: 10.1016/j.dendro.2011.01.013
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Lorz, C.; Abbt-Braun, G.; Bakker, F.; Borges de Amorim, P.; Börnick, H.; Fortes, L.; Frimmel, F.; Gaffron, A.; Hebben, N.; Höfer, R.; Makeschin, F.; Neder, K.; Roig, H.; Steiniger, B.; Strauch, M.; Weiß, H.; Worch, E.; Wummel, J. (2012): Challenges of an integrated water resource management for the Distrito Federal, Western Central Brazil: climate, land-use and water resources. Environmental Earth Sciences 65 (5), S. 1575-1586. DOI: 10.1007/s12665-011-1219-1
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Matthes, K.; Nusche, H.; Dietrich, P.; Vienken, T. (2012): Effects of measuring inaccuracy during grain size analyses on the determination of hydraulic conductivity. Grundwasser 17 (2), S. 105-111. DOI: 10.1007/s00767-012-0191-3
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Vienken, T.; Leven, C.; Dietrich, P. (2012): Use of CPT and other direct push methods for (hydro-) stratigraphic aquifer characterization — a field study. Canadian Geotechnical Journal 49 (2), S. 197-206. DOI: 10.1139/t11-094
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Somodi, I.; Molnár, Z.; Ewald, J. (2012): Towards a more transparent use of the Potential Natural Vegetation concept – an answer to Chiarucci et al. Journal of Vegetation Science 23 (3), S. 590-595. DOI: 10.1111/j.1654-1103.2011.01378.x
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Strauch, M.; Bernhofer, C.; Koide, S.; Volk, M.; Lorz, C.; Makeschin, F. (2012): Using precipitation data ensemble for uncertainty analysis in SWAT streamflow simulation. Journal of Hydrology 414-415, S. 413-424. DOI: 10.1016/j.jhydrol.2011.11.014
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Franz, C.; Roig, H.; Makeschin, F.; Schubert, M.; Weiß, H.; Lorz, C. (2012): Sediment characteristics and sedimentation rates of a small river in Western Central Brazil. Environmental Earth Sciences 65 (5), S. 1601-1611. DOI: 10.1007/s12665-011-1498-6
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2011

Lang, P.; Frei, M.; Ewald, J. (2011): Waldgesellschaften und Standortabhängigkeit der Vegetation vor Beginn der Redynamisierung der Donauaue zwischen Neuburg und Ingolstadt. Tuexenia 31, S. 39-57.
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Ewald, J.; Jehl, H.; Braun, L.; Lohberger, E. (2011): Die Vegetation des Nationalparks Bayerischer Wald als Ausdruck von Standort und Walddynamik. Tuexenia 31, S. 9-38.
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Die Wälder des Nationalparks Bayerischer Wald sind seit 25 Jahren geprägt von ungelenkter Walddynamik nach großflächigen Störungen durch Windwurf und Borkenkäferbefall. Diese Entwicklung sowie neue Hypothesen zur potenziellen natürlichen Vegetation der sog. „Au-Fichtenwälder“ gaben Anlass zu einer pflanzensoziologischen Untersuchung. 181 Vegetationsaufnahmen, die sich gleichmäßig auf sechs Einheiten einer Vegetationskarte und sechs im Rahmen der Forstinventur kartierte Waldentwicklungsstadien verteilen, wurden mittels stratifizierter Zufallsauswahl lokalisiert und mittels Ordination und halbmanueller Tabellenarbeit analysiert. Die ökologische Interpretation der floristischen Muster erfolgte durch Korrelation mit Ellenberg-Zeigerwerten sowie mit am Standort gemessenen bzw. aus GIS abgeleiten Umweltvariablen. Der floristische Hauptgradient wurde als Nährstoffgradient (v. a. Basenversorgung) identifiziert, gefolgt vom Temperatur- und Feuchtegefälle. Die Waldgesellschaften (Galio-Fagetum, Luzulo-Fagetum, Calamagrostio-Fagetum, Calamagrostio-Piceetum, Luzulo-Abie-tetum, Galio-Abietetum) lassen sich entlang dieser Gradienten anordnen und m.o.w. scharf trennen. Demgegenüber hatte das Waldentwicklungsstadium nur geringen Einfluss auf die Artenzusammensetzung. Lediglich Mortal- und Jugendstadium wiesen eine gewisse Häufung von nitrophytischen Störungszeigern auf, deren Frequenz auf basenreichen Standorten deutlich höher war. Das verbreitete Vorkommen von Luzulo- und Galio-Abietetum auf basenreichen Feuchtböden der Tal- und unteren Hanglagen wurde bestätigt. Die Informationen in der vorliegenden Standortskarte sind bzgl. des Basen- und Wasserhaushalts zu ungenau, um das Auftreten der Waldgesellschaften punktgenau vorherzusagen.

Jansen, F.; Dengler, J.; Glöckler, F.; Chytrý, M.; Ewald, J.; Oldeland, J.; Schaminée, J. (2011): Die mitteleuropäischen Datenbanken im Global Index of Vegetation-Plot Databases (GIVD). Tuexenia 31, S. 351-367.
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Lorz, C.; Heller, K.; Kleber, A. (2011): Stratification of the regolith-continuum – a key parameter for landscape properties. Zeitschrift für Geomorphologie 55 (3), S. 277-292. DOI: 10.1127/0372-8854/2011/0055S3-0062
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Krumke, S.; Thielen, C.; Westphal, S. (2011): Interval Scheduling on Related Machines. Computers and Operations Research 38 (12), S. 1836-1844. DOI: 10.1016/j.cor.2011.03.001
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Lorz, C.; Saile, T. (2011): Anthropogenic pedogenesis of Chernozems in Germany? – A Critical Review. Quaternary International 243 (2), S. 273-279. DOI: 10.1016/j.quaint.2010.11.022
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Faust, D.; Lorz, C. (2011): Black Soils and Black Sediments - Archives of Landscape Evolution. Quaternary International 243 (2), S. 249-250. DOI: 10.1016/j.quaint.2011.06.016
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Fürst, C.; Lorz, C.; Makeschin, F. (2011): Integrating land management aspects into an assessment of the impact of land cover changes on ecosystem services. International Journal of Biodiversity Science, Ecosystem Services & Management 7 (3), S. 168-181. DOI: 10.1080/21513732.2011.611119
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Dengler, J.; Jansen, F.; Glöckler, F.; Peet, R.; De Cáceres, M.; Chytrý, M.; Ewald, J.; Oldeland, J.; Lopez-Gonzalez, G.; Finckh, M.; Mucina, L.; Rodwell, J.; Schaminée, J.; Spencer, N. (2011): The Global Index of Vegetation‐Plot Databases (GIVD): a new resource for vegetation science. Journal of Vegetation Science 22 (4), S. 582-597. DOI: 10.1111/j.1654-1103.2011.01265.x
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Dengler, J.; Ewald, J.; Kühn, I.; Peet, R. (2011): Ecoinformatics and global change – an overdue liaison. Journal of Vegetation Science 22 (4), S. 577-581. DOI: 10.1111/j.1654-1103.2011.01313.x
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Krumke, S.; Thielen, C. (2011): Minimum Cost Flows with Minimum Quantities. Information Processing Letters 111 (11), S. 533-537. DOI: 10.1016/j.ipl.2011.03.007
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Reger, B.; Kölling, C.; Ewald, J. (2011): Modelling effective thermal climate for mountain forests in the Bavarian Alps: Which is the best model? Journal of Vegetation Science 22 (4), S. 677-687. DOI: 10.1111/j.1654-1103.2011.01270.x
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Mellert, K.; Fensterer, V.; Küchenhoff, H.; Reger, B.; Ewald, J.; Kölling, C.; Klemmt, H. (2011): Hypothesis‐driven species distribution models for tree species in the Bavarian Alps. Journal of Vegetation Science 22 (4), S. 635-646. DOI: 10.1111/j.1654-1103.2011.01274.x
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Nikolova, P.; Zang, C.; Pretzsch, H. (2011): Combining tree-ring analyses on stems and coarse roots to study the growth dynamics of forest trees: a case study on Norway spruce (Picea abies [L.] H. Karst). Trees 25, S. 859-872. DOI: 10.1007/s00468-011-0561-y
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Lorz, C.; Bakker, F.; Neder, K.; Roig, H.; Weiß, H.; Makeschin, F. (2011): Landnutzungswandel und Wasserressourcen im Bundesdistrikt Brasiliens. Hydrologie und Wasserbewirtschaftung 55 (2), S. 75-87.
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Vienken, T.; Dietrich, P. (2011): Field evaluation of methods for determining hydraulic conductivity from grain size data. Journal of Hydrology 400 (1-2), S. 58-71. DOI: 10.1016/j.jhydrol.2011.01.022
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Krumke, S.; Thielen, C.; Zeck, C. (2011): Extensions to Online Delay Management on a Single Train Line: New Bounds for Delay Minimization and Profit Maximization. Mathematical Methods of Operations Research 74, 53 (1), S. 53-75. DOI: 10.1007/s00186-011-0349-2
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Thielen, C.; Westphal, S. (2011): Complexity of the Traveling Tournament Problem. Theoretical Computer Science 412 (4-5), S. 345-351. DOI: 10.1016/j.tcs.2010.10.001
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Zang, C.; Rothe, A.; Weis, W.; Pretzsch, H. (2011): Zur Baumarteneignung bei Klimawandel: Ableitung der Trockenstress-Anfälligkeit wichtiger Waldbaumarten aus Jahrringbreiten. Allgemeine Forst- und Jagdzeitung 182 (5), S. 98-112.

2010

Ewald, J.; Dengler, J.; Finckh, M. (2010): Bericht von der 9. internationalen Tagung zu Vegetationsdatenbanken mit dem Schwerpunkt "Klimawandel" in Hamburg. Tuexenia 30, S. 489-492.
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Wir berichten über die 9. internationale Tagung zu Vegetationsdatenbanken, die von der Sektion „Vegetationsdatenbanken“ innerhalb von NetPhyD vom 24. bis 26.02.2010 in Hamburg organisiert wurde. Die Tagung unter dem Motto „Vegetationsdatenbanken und Klimawandel“ wurde von Teilnehmer Innen aus zahlreichen Ländern besucht. Ferner geben wir allgemeine Informationen zur Sektion „Vegetationsdatenbanken“, bei der jeder kostenlos Mitglied werden kann, und stellen zwei Projekte im Zusammenhang mit der Hamburger Tagung vor, eine weltweite Metadatenbank von Vegetationsdatenbanken und die geplante supranationale Vegetationsdatenbank von (Trocken-) Rasengesellschaften Südosteuropas.

Ewald, J.; Conrad, S.; May, R.; Kleikamp, M. (2010): Neues von VegetWeb. Tuexenia 30, S. 493-494.
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Die Online-Vegetationsdatenbank VegetWeb (http://www.floraweb.de/vegetation/vegetweb) wächst und gedeiht. Den größten Zuwachs an Vegetationsaufnahmen erfuhr sie 2009 durch sämtliche 15.000 am Landesamt für Natur, Umwelt und Verbraucherschutz des Landes Nordrhein-Westfalen gespeicherten Vegetationsaufnahmen (überwiegend Gründland), welche unter dem Projektkürzel LANUV recherchierbar sind.

Fürst, C.; Vacik, H.; Lorz, C.; Potočić, N.; Makeschin, F. (2010): How to Support Forest Management in a World of Change: Results of Some Regional Studies. Journal of Environmental Management 46, S. 941-952. DOI: 10.1007/s00267-009-9360-2
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Fürst, C.; Lorz, C.; Zirlewagen, D.; Makeschin, F. (2010): Mapping of ferrimagnetic susceptibility for screening of fly ash deposition. WIT Transactions on the Built Environment, Geo-Environment and Landscape Evolution 136, S. 379-393. DOI: 10.2495/AIR100341
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Linder, S.; Paasche, H.; Tronicke, J.; Niederleithinger, E.; Vienken, T. (2010): Zonal cooperative inversion of crosshole P-wave, S-wave, and georadar traveltime data sets. Journal of Applied Geophysics 72 (4), S. 254-262. DOI: 10.1016/j.jappgeo.2010.10.003
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Fürst, C.; Lorz, C.; Zirlewagen, D.; Makeschin, F. (2010): Testing the Indicative Value of Magnetic Susceptibility Measurements for Concluding on Site Potentials and Risks Provoked by Fly Ash Deposition. Environmental Management 46, S. 894-907. DOI: 10.1007/s00267-010-9572-5
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Vuletic, D.; Potocic, N.; Krajter, S.; Seletkovic, I.; Fürst, C.; Makeschin, F.; Galic, Z.; Lorz, C.; Matijasic, D.; Zupanic, M.; Simoncic, P.; Vacik, H. (2010): How Socio-Economic Conditions Influence Forest Policy - Development in Central and South-East Europe. Journal of Environmental Management 46, S. 931-940. DOI: 10.1007/s00267-010-9566-3
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Thielen, C.; Krumke, S. (2010): Truthful mechanisms for selfish routing and two-parameter agents. Theory of Computing Systems 49 (1), S. 196–223. DOI: 10.1007/s00224-010-9281-8
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Niemela, M.; Röder, H.; Murray, G. (2010): Biomass Sourcing and logistics: From Theory to Practice. International Journal of Chemical Reactor Engineering 8 (1). DOI: 10.2202/1542-6580.2236
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Lorz, C.; Fürst, C.; Galic, Z.; Matijašič, D.; Podrazky, V.; Potočić, N.; Simončič, P.; Strauch, M.; Vacik, H.; Makeschin, F. (2010): GIS-based Probability Assessment of Natural Hazards in Forested Landscapes of Central and South-Eastern Europe. Journal of Environmental Management 46, S. 920-930. DOI: 10.1007/s00267-010-9508-0
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2009

Lorz, C.; Eissner, C.; Schneider, B.; Lethmate, J. (2009): Spatial and temporal small-scale variability of net nitrification in a forest ecosystem with exceptional high N-Deposition in NW-Germany. Environmental Pollution 158, S. 424–439.

Ewald, J. (2009): Bimodale Spektren von Nährstoffzeigerwerten in Bayerns Nadelwäldern. Forstarchiv 80 (5), S. 189-194.
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Ewald, J.; Jansen, F. (2009): 8. Workshop der Arbeitsgruppe Vegetationsdatenbanken zum Thema "Bioindikation" in Greifswald. Tuexenia 29, S. 441-442.
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Die Arbeitsgruppe Vegetationsdatenbanken widmet sich dem Aufbau und der Auswer­tung von pflanzensoziologischen Datenbanken in Deutschland. Sie trifft sich seit 2002 jähr­lich zu bundesweiten, vom Bundesamt für Naturschutz geförderten Workshops. Seit 2008 leistet die Floristisch-soziologische Arbeitsgemeinschaft zusätzliche finanzielle Unterstüt­zung. Über einen E-Mail-Verteiler, der derzeit 215 Adressen in Deutschland und angrenzen­den Ländern umfasst, wird regelmäßig über einschlägige Aktivitäten informiert - Bitten um Aufnahme in den Verteiler sind per E-Mail an J. Ewald zu richten.
Das 8. Arbeitstreffen fand vom 25. bis 27. Februar 2009 auf Einladung von Michael Manthey und Florian Jansen am Institut für Botanik und Landschaftsökologie der Univer­sität Greifswald statt, und wurde von 38 Teilnehmerinnen aus 8 europäischen Ländern besucht.

2008

Ewald, J.; Conrad, S.; Kleikamp, M. (2008): Vegetationsaufnahmen aus Tuexenia Band 27 sind online. Tuexenia 28, S. 269.
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Zahn, A.; Gelhaus, M.; Zahner, V. (2008): Die Wälder der Herreninsel (Chiemsee, Oberbayern) als Jagdhabitate für Fledermäuse. AFJZ 179, S. 173-179.

Lorz, C.; Kleber, A.; Faust, D. (2008): From Archive to Process – Editorial. Zeitschrift für Geomorphologie 52 (Suppl. 2), S. 1-2. DOI: 10.1127/zfg_suppl/52/2008/2preface
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Fürst, C.; Davidsson, C.; Pietzsch, K.; Abiy, M.; Volk, M.; Lorz, C.; Makeschin, F. (2008): „Pimp your landscape“ - an interactive land-use planning support tool. WIT Transactions on the Built Environment, Geo-Environment and Landscape Evolution III 100, S. 219-232. DOI: 10.2495/GEO080221
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Ewald, J. (2008): Plant species richness in mountain forests of the Bavarian Alps. Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology 142 (3), S. 594-603. DOI: 10.1080/11263500802410942
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Based on a stratified random sample of 93 vegetation plots (144 m2) from montane and subalpine climax forests in a representative section through the Bavarian Alps, spatial pattern and environmental correlates of species density of trees, vascular understorey and epigeic bryophytes were analysed. Detecting landscape scale patterns in beta- and gamma-diversity based on interpretation of rarefaction curves proved to be difficult in a sample that had been stratified by ecological criteria. In 144 m2 plots tree species density (5 ± 2.0, max. 10) declined with elevation and increased with stand age (multiple R 2 = 0.557). The latter effect can be attributed to the secular history of game management and browsing pressure, which has hindered the regeneration of species-rich tree stands since ca. 150 yr. Species density of the forest undergrowth reached remarkably high levels for vascular plants (42 ± 12.8, max. 69) and bryophytes (14 ± 6.0, max. 30) and strongly depended on cover of the respective layer in a unimodal pattern, suggesting to separate direct and indirect effects, mediated through the mass effect, in the subsequent construction of regression models. Multiple regression (R 2 = 0.47) revealed that vascular species density is limited chiefly through low plant cover, which in turn decreases with tree cover, elevation and soil quality, and secondly by species pools that contain larger numbers of species requiring high pH and ample light. Cover and direct effects had roughly equal weight in controlling bryophyte species density (R 2 = 0.57). Biomass depended on the proportion of conifers in the tree layer and on site quality, less fertile sites tending to have higher bryophyte cover. The increase of bryophyte species density with elevation was interpreted as an effect of a pool of largely boreal-subalpine species. The increase of species density with stand age suggests dispersal limitation and deserves further study.

Nelles, O.; Bänfer, O.; Kainz, J.; Beer, J. (2008): Local model networks - The prospective method for modeling in electronic control units? ATZelektronik worldwide 3, S. 36-39. DOI: 10.1007/BF03242200
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Lorz, C. (2008): Lithological discontinuous soils - archives for the pedo-geochemical genesis of the soil-regolith-complex? Zeitschrift für Geomorphologie 52 (Suppl. 2), S. 119-132. DOI: 10.1127/0372-8854/2008/0052S2-0119
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Phillips, J.; Lorz, C. (2008): Origins and Implications of Soil Layering. Earth Science Reviews 89 (3-4), S. 144-155. DOI: 10.1016/j.earscirev.2008.04.003
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Rothe, A.; Hickey, J.; Clark, S. (2008): Effects of sapling density on Eucalyptus obliqua sapling architecture in a clearfell and a dispersed retention coupe. Tasforests 17, S. 45-56.
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Ewald, J.; Kleyer, M.; Peppler-Lisbach, C. (2008): 7. Workshop der Arbeitsgruppe Vegetationsdatenbanken zum Thema „Plant-Trait-Environment-Linkages“ in Oldenburg. Tuexenia 28, S. 267-268.
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Das 7. Arbeitstreffen fand vom 5.-7. März 2008 auf Einladung von Cord Peppler-Lisbach und Michael Kleyer an der Universität Oldenburg, Arbeitsgruppe Landschaftsökolo­gie, statt, und wurde von 72 Teilnehmerinnen besucht. Da fast die Hälfte der Teilnehmer aus dem Ausland anreiste, fand die Tagung in englischer Sprache statt. Insgesamt waren 15 Nationen vertreten, neben europäischen Ländern wie Tschechien, Ungarn, den Niederlan­den und Frankreich auch die USA und Japan. Ein Novum war, dass die Floristisch-soziologische Arbeitsgemeinschaft sich an der Finanzierung der Organisationskosten beteiligte.

Abs, C.; Ewald, J.; Walentowski, H.; Winter, S. (2008): Untersuchung der Schattentoleranz von Baumarten auf Grundlage der Datenbank bayerischer Naturwaldreservate. Tuexenia 28, S. 23-40.
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2007

Ewald, J.; Conrad, S.; Kleikamp, M. (2007): Vegetationsaufnahmen aus Tuexenia Band 25 und Band 26 gehen online. Tuexenia 27, S. 417-420.
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Die in den Bänden 25 und 26 der Tuexenia abgedruckten 1.212 Vegetationsaufnahmen wurden in der Online-Datenbank VegetWeb unter www.floraweb.de bereitgestellt. Sie können kostenfrei nach beliebigen Kriterien des Taxonbestandes und der Kopfdaten durchsucht werden und werden in Form von Kreuztabellen ausgegeben.

Ewald, J. (2007): Beurteilung von Waldstandorten und Waldgesellschaften mit Zeigerarten-Ökogrammen. Tuexenia 27, S. 7-18.
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Das Zeigerarten-Ökogramm ist ein Formular zur Erfassung und Bewertung der an Waldstandorten bestimmbaren Zeigerpflanzen der Bodenvegetation. Es stellt eine Synthese der in der forstlichen Stand­ortserkundung geläufigen ökologischen Artengruppen mit dem Prinzip der ökologischen Zeigerwerte nach Ellenberg dar. Vorgestellt wird eine gegenüber der Erstauflage von 2003 überarbeitete Version. 314 Sippen von Waldbodenpflanzen werden nach geschätzten Optima und Amplituden bezüglich Basenversorgung/pH und Wasserangebot/-überschuss 29 Artengruppen zugeordnet. Die Gruppen werden mit allen Mitgliedern in einem 2-dimensionalen Koordinatensystem dargestellt. Am Rand des Ökogramms werden zusätzlich 29 Stickstoff-Zeigersippen in drei Gruppen dargestellt. Elektronische Vorlagen des Ökogramms können im Internet herunter geladen werden (http://www.fh-weihenstephan.de/fw/homepages/ewald/webseite/default.htm).
Im DIN A3-Format vervielfältigt, wird das Ökogramm für einen bis mehrere Waldstandorte durch Anstreichen der gefundenen Zeigerarten mit farbigen Leuchtstiften ausgefüllt. Für jeden Standort ent­steht eine Wolke von Zeigerarten, deren Schwerpunkt und Umriss hinsichtlich der Standorteinschät­zung und Ansprache der Waldgesellschaft ausgewertet wird. Es handelt sich also um ein grafisches, im Gelände umsetzbares Ordinationsverfahren.
Die Methode ist Standard in der Ausbildung der Forstingenieure und Landschaftsplaner an der FH Weihenstephan und wird von den einschlägigen Fachstellen der bayerischen Forstverwaltung in den Bereichen Naturschutz und Standortskunde eingesetzt. In Kombination mit dem Handbuch der Wald­gesellschaften Bayerns ermöglicht es eine objektivierte Ansprache der potentiellen natürlichen Vegetati­on. Diese erfolgt zum einen durch die gutachtliche Bestimmung der Position im Ökogramm, zu der anschließend die passende Waldgesellschaft abgegriffen wird. Zum anderen wird dieses Vorgehen durch Ökogramme der Waldgesellschaften verfeinert, die die diagnostische Artenkombination einschließlich von Ausschlussarten darstellen.

Madlener, R.; Röder, H.; de Spindler, J.; Hauser, C.; Walker, D.; Hostettler, M. (2007): Schweizer Wald- und Holzwirtschaft aus industrieökonomischer Perspektive. Schweizerische Zeitschrift fur Forstwesen 158 (12), S. 417-433. DOI: 10.3188/szf.2007.0417
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Lorz, C.; Schmidt, G.; Volk, M. (2007): Considering spatial distribution and functionality of forests in a modeling framework for river basin management. Forest Ecology and Management 248 (1-2), S. 17-25. DOI: 10.1016/j.foreco.2007.02.032
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Fürst, C.; Lorz, C.; Makeschin, F. (2007): Development of forest ecosystems after heavy deposition loads considering Dübener Heide as example—challenges for a process-oriented forest management planning. Forest Ecology and Management 248 (1-2), S. 6-16. DOI: 10.1016/j.foreco.2007.02.030
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Fürst, C.; Vacik, H.; Lorz, C.; Makeschin, F.; Podrazky, V.; Janecek, V. (2007): Meeting the challenges of process-oriented forest management. Forest Ecology and Management 248 (1-2), S. 1-5. DOI: 10.1016/j.foreco.2007.02.031
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Ewald, J. (2007): Ein pflanzensoziologisches Modell der Schattentoleranz von Baumarten in den Bayerischen Alpen. Forum geobotanicum 3, S. 11-19. DOI: 10.3264/FG.2007.0803
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Ewald, J. (2007): 6. Workshop der Arbeitsgruppe Vegetationsdatenbanken zum Thema Florenkartierung und Vegetationsaufnahme in Bonn. Tuexenia 27, S. 427-428.
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Die Arbeitsgruppe Vegetationsdatenbanken traf sich vom 28.2. bis 2.3.2007 auf Einla­dung von Sebastian Schmidtlein (Professur für Vegetationsgeographie) und des Bundesamtes für Naturschutz am Institut für Geographie der Universität Bonn zu ihrem 6. Workshop in Folge. Das Tagungsthema brachte bereits eine Neuerung zum Ausdruck: Auf besonderen Wunsch des Bundesamtes richtete sich das diesjährige Treffen über die engere vegetations­ökologische Gemeinde hinaus an die Koordinatorinnen und Koordinatoren der floristischen Kartierung und die Mitglieder des 2006 gegründeten Netzwerks Phytodiversität Deutsch­land (NetPhyD). Mit 141 Anmeldungen aus 11 Ländern (in der Reihenfolge der Teilnehmer­zahl: Deutschland, Tschechien, Slowakei, Ungarn, Österreich, Schweiz, Italien, Luxemburg, Großbritannien, Niederlande, Bosnien-Herzegowina) war dies die bisher größte und inter­nationalste Tagung dieser Reihe.

2006

Lorz, C.; Phillips, J. (2006): Pedo-Ecological Consequences of Lithological Discontinuities in Soils – Examples from Central Europe. Journal Plant Nutrition Soil Science 169 (4), S. 573-581. DOI: 10.1002/jpln.200521872
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Isermann, M.; Diekmann, M.; Ewald, J. (2006): 5. Workshop der Arbeitsgruppe Vegetationsdatenbanken zum Thema Dauerbeobachtung in Bremen. Tuexenia 26, S. 397-398.
mehr   Open Access

2005

Beer, A.; Ewald, J. (2005): Vegetationskundliche Untersuchungen rezent streugenutzter Kiefernwälder auf Binnendünen des niederbayerischen Tertiärhügellandes. Tuexenia 25, S. 93-109.
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Dittmar, C.; Ewald, J.; Elling, W. (2005): Die vermeintliche Steuerung des Blattverlustes der Buche (Fagus sylvatica L.) durch die Witterung. Allgemeine Forst- und Jagdzeitung 176 (11/12), S. 220-228.

Ammer, C.; Albrecht, L.; Borchert, H.; Brosinger, F.; Dittmar, C.; Elling, W.; Ewald, J.; Felbermeier, B.; von Gilsa, H.; Huss, J.; Kenk, G.; Kölling, C.; Kohnle, U.; Meyer, P.; Mosandl, R.; Moosmayer, H.; Palmer, S.; Reif, A.; Rehfuess, K.; Stimm, B. (2005): Zur Zukunft der Buche (Fagus sylvatica L.) in Mitteleuropa - kritische Anmerkungen zu einem Beitrag von Rennenberg et al. (2004). Allgemeine Forst und Jagdzeitung 176 (4), S. 60-67.
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Ewald, J. (2005): Ecological background of crown condition, growth and nutritional status of Picea abies (L.) Karst. in the Bavarian Alps. European Journal of Forest Research 124 (1), S. 9-18. DOI: 10.1007/s10342-004-0051-5
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Using a representative sample of stands from a cross section through the Bavarian portion of the northern Calcareous Alps, this study evaluates the plausibility and significance of causal hypotheses for an explanation of the poor crown condition of Norway spruce in mountain forests: (1) ozone exposure in conjunction with (a) drought and (b) ample water supply; (2) soil-borne nutrient deficiency; (3) drought; and (4) tree age. Site index and, in a subset of stands, foliar nutrient concentrations are considered as additional indicators of tree vigour. According to principal component analysis and multiple regression, crown condition was controlled by soil chemistry (transparency increased towards shallow calcareous soils), stand age and, to a smaller degree, by an interaction between ozone exposure and drought. Site index was best explained by a model including elevation, soil chemistry and drought. Tree nutrition clearly reflected the main soil chemical gradient, and P, N and Fe deficiencies were found in transparent stands, which had markedly smaller needles. The similar distributions of crown transparency, site index and nutrition present a strong argument for the hypothesis that soil chemistry has constrained the vigour of spruce trees in the Calcareous Alps for a long time. By leaving unproductive stands to age naturally, forest management has accentuated the pattern of crown condition. In the heterogeneous alpine landscape, possible effects of recent increases in ozone exposure have to be viewed extremely carefully against the background of these natural and anthropogenic covariables.

2004

Ewald, J. (2004): Buchbesprechung von: Renate Bärnthol, 2003: Nieder- und Mittelwald in Franken. Waldwirtschaftsformen aus dem Mittelalter. Forstarchiv 75, S. 70-71.

Kainz, J.; Rössler, U.; Winkler, R. (2004): Temperature dependence of Dyakonov-Perel spin relaxation in zinc-blende semiconductor quantum structures. Physical Review B 70, 195322 (19). DOI: 10.1103/PhysRevB.70.195322
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Ewald, J. (2004): Ökologie der Weißtanne (Abies alba Mill.) im bayerischen Alpenraum. Forum geobotanicum 1, S. 9-18. DOI: 10.3264/FG.2004.1109
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Huber, C.; Kreutzer, K.; Röhle, H.; Rothe, A. (2004): Response of artificial acid irrigation, liming, and N-fertilisation on elemental concentrations in needles, litter fluxes, volume increment, and crown transparency of a N saturated Norway spruce stand. Forest Ecology and Management 200 (1-3), S. 3-21. DOI: 10.1016/j.foreco.2004.05.058
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Schneider, P.; Kainz, J.; Ganichev, S.; Belkov, V.; Danilov, S.; Glazov, M.; Golub, L.; Rössler, U.; Wegscheider, W.; Weiss, D.; Schuh, D.; Prettl, W. (2004): Spin relaxation times of two-dimensional holes from spin sensitive bleaching of intersubband absorption. Journal of Applied Physics 96 (1), S. 420-424. DOI: 10.1063/1.1753656
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Rothe, A.; Mellert, K. (2004): Effects of Forest Management on Nitrate Concentrations in Seepage Water of Forests in Southern Bavaria, Germany. Water, Air, and Soil Pollution 156 (1-4), S. 337-355. DOI: 10.1023/B:WATE.0000036826.17273.b3
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Kainz, J.; Schneider, P.; Ganichev, S.; Rössler, U.; Wegscheider, W.; Weiss, D.; Prettl, W.; Belkov, V.; Golub, L.; Schuh, D. (2004): Hole spin-relaxation in quantum wells from saturation of inter-subband absorption. Physica E: Low-dimensional Systems and Nanostructures 22 (1-3), S. 418-421. DOI: 10.1016/j.physe.2003.12.035
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2003

Ewald, J. (2003): Ansprache von Waldstandorten mit Zeigerarten-Ökogrammen - eine graphische Lösung für Lehre und Praxis. Allgemeine Forst und Jagdzeitung 174, S. 177-185.

Ewald, J. (2003): The calcareous riddle: Why are there so many calciphilous species in the Central European flora? Folia Geobotanica 38, S. 357-366. DOI: 10.1007/BF02803244
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The pool of the Central European flora consists of a majority of vascular plant taxa that are restricted to very base rich and calcareous soils. Ellenberg indicator values for Germany indicate that this floristic pattern is one of the potentially most powerful determinants of the richness of modern temperate plant communities. Considering the example of the forest flora, which, as the putative natural core of the species pool, exhibits the same skew, it is shown that neither the frequency of suitable soil types nor other correlated ecological factors can explain this striking pattern. Also, the ramification of higher taxa offers no indication of higher evolution speeds in calciphilous plants. As an alternative, it is hypothesized that Pleistocene range contractions have caused the extinction of more acidophilous than calciphilous species, because acid soils were much rarer when refugial areas were at their minimum. If this is correct, one of the most significant ecological patterns in the contemporary distribution of plant diversity must be regarded as a result of ecological drift imposed by a historical bottleneck.

Schmidtlein, S.; Ewald, J. (2003): Landscape patterns of indicator plants for soil acidity in the Bavarian Alps. Journal of Biogeography 30 (10), S. 1493-1503. DOI: 10.1046/j.1365-2699.2003.00879.x
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Kainz, J.; Rössler, U.; Winkler, R. (2003): Anisotropic spin-splitting and spin-relaxation in asymmetric zinc blende semiconductor quantum structures. Physical Review B 68, 075322 (7). DOI: 10.1103/PhysRevB.68.075322
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Schneider, P.; Ganichev, S.; Kainz, J.; Rössler, U.; Wegscheider, W.; Weiss, D.; Prettl, W.; Belkov, V.; Golub, L.; Schuh, D. (2003): Spin-sensitive bleaching and spin-relaxation in QWs. physica status solidi (b) 238 (3), S. 533-536. DOI: 10.1002/pssb.200303182
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Lorz, C.; Hruška, J.; Krám, P. (2003): Modeling and monitoring of long-term acidification in an upland catchment of the Western Ore Mountains, SE Germany. Science of the Total Environment 310 (1-3), S. 153-161. DOI: 10.1016/S0048-9697(02)00635-6
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Kainz, J.; Rössler, U.; Winkler, R. (2003): Anisotropic Spin Splitting and Spin Relaxation in AlGaAs/GaAs Quantum Structures. Superconductivity 16, S. 323-326. DOI: 10.1023/A:1023665403690
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Ewald, J. (2003): A critique for phytosociology. Journal of Vegetation Science 14 (2), S. 291-296. DOI: 10.1111/j.1654-1103.2003.tb02154.x
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Phytosociology is a subdiscipline of plant ecology that describes the co‐occurrence of plant species in communities. Gradient analysis and classification are its complementary tools. Various peculiarities and anachronisms of Central European phytosociology conceal its similarity with Anglo‐American approaches. Phytosociology deserves to be updated as a part of modern vegetation science that can build on a vast heritage of high‐quality data and the tools to store and analyse them in ways that go beyond syntaxonomy. By providing a context to more specialized pure and applied research, it has a crucial role to play in understanding community structure, ecosystem functioning and biological evolution.

Rothe, A.; Ewald, J.; Hibbs, D. (2003): Do admixed broadleaves improve foliar nutrient status of conifer tree crops? Forest Ecology and Management 172 (2-3), S. 327-338. DOI: 10.1016/S0378-1127(01)00800-3
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We investigated three Douglas fir–red alder stands in Oregon, USA, and five Norway spruce–European beech stands in Bavaria, Germany, to test the hypothesis that admixtures of broadleaved trees improve nutritional status of conifers. At each site needle samples from 20 to 30 conifer trees with varying proportions of broadleaves adjacent to the sample trees were taken and analysed for needle mass and the macronutrients N, P, K, Ca and Mg. The neighbourhood of each tree was described by the proportion of deciduous basal area within an 8 m circle. Ordination methods (principal component analysis; redundancy analysis) were used to test the dependency of the multivariate nutritional pattern in conifers on deciduous neighbours and rank correlation and regression were used to analyse bivariate relationships between tree species composition and descriptors of needle status. The statistical analyses yielded no evidence that deciduous admixtures improve foliar nutrition of conifers. Alongside with other empirical studies this shows that beneficial effects of broadleave admixtures on conifer nutrition are less common than postulated. Future research investigating the whole causal path relevant for tree nutrition and growth is necessary to improve our knowledge in the complex field of nutrition of mixed species forests.

Ewald, J. (2003): The sensitivity of Ellenberg indicator values to the completeness of vegetation relevés. Basic and Applied Ecology 4 (6), S. 507-513. DOI: 10.1078/1439-1791-00155
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Ordination and calibration (indicator species analysis) are based on the taxonomic composition and richness of communities. How strongly does the performance of a widely used method like weighted averaging of Ellenberg indicator values depend on the completeness of samples? Based on a stratified random sample of coincident phytosociological relevés of forest understorey and environmental measurements (overstorey cover, elevation, moisture index, pH and C/N-ratio in topsoil) indicator values for light, temperature, moisture, soil acidity and nitrogen were tested. To simulate reduced sampling effort and uncomplete representation of plant diversity, the original compositional matrix was reduced by randomly deleting 1, 10, 20, 40 and 80% of species records with low abundance. The relationship between indicator values based on the full matrix and environmental variables was closest for temperature (R2 = 0.53) and lowest for soil nitrogen (R2 = 0.28). Deletion of low-abundance species records affected the correlations only weakly. With as little as 20% of the original species records (or 40% of gamma- and 20% of alpha-diversity) explained variance was still in a range of 0.26 to 0.37. The overall multivariate association between species composition and environment, as measured by Mantel statistics, was more strongly affected by the ommission of species records than the Ellenberg method. The relative resilience of Ellenberg indicator values to incomplete sampling is attributed to its predominant reliance on coarse structural information, i.e. the dominance pattern of relatively few plant species. Finely-tuned local indicator systems perform better by exploiting the idiosyncratic information of rare species. Choosing an optimal sampling scale involves a tradeoff between noise and completeness, an issue that has been largely neglected by environment-composition studies.

2002

Ewald, J. (2002): Book review of Hubbell, S. P.: The Unified Neutral Theory of Biodiversity and Biogeography. Folia Geobotanica 37, S. 355-356.

Opp, C.; Lorz, C. (2002): Koexistenz zwischen Geotopschutz und Rohstoffgewinnung? – Antworten und Fallbeispiele aus Sachsen und Hessen. Scriptum 9, S. 93-104.

Rothe, A.; Cromack, K.; Resh, S.; Makineci, E.; Son, Y. (2002): Soil Carbon and Nitrogen Changes Under Douglas‐fir With and Without Red Alder. Soil Science Society of America Journal 66 (6), S. 1988-1995. DOI: 10.2136/sssaj2002.1988
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Augusto, L.; Ranger, J.; Binkley, D.; Rothe, A. (2002): Impact of several common tree species of European temperate forests on soil fertility. Annals of Forest Science 59 (3), S. 233-253. DOI: 10.1051/forest:2002020
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Ewald, J. (2002): Multiple controls of understorey plant richness in mountain forests of the Bavarian Alps. Phytocoenologia 32 (1), S. 85-100. DOI: 10.1127/0340-269X/2002/0032-0085
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The management of biodiversity in forests requires a basis derived from community ecology. In a transect representative of montane and subalpine forests at the northern fringe of the Alps, I studied the relative importance of the tree layer diversity and age, understorey cover and species pool size for species richness of vascular understorey communities. Regional species pools were estimated for seven community types represented in a large phytosociological database. Local species pool size was modelled for each community type on the basis of regional pools and grid cell data from floristic mapping. Tree-layer diversity was the only study variable unrelated to species richness. Understorey richness increased with understorey cover, species pool and stand age. Combined, these three predictors explained 46 % of the observed variation in richness in a regression model. When the species pool variable was partioned into its components, synecological information was a more powerful predictor of richness than variation in the local flora, which was likely due to the strength of site effects related to soil pH and to the relatively small geographic extent of the study. Species richness in mountain forests can be forecasted by maps of community types. Within the bounds of natural site-dependent diversity, extensive management practices allowing for moderate to high cover of understorey and the development of old growth stands favour the occurrence of forests rich in vascular plant species.

Rothe, A.; Kreutzer, K.; Küchenhoff, H. (2002): Influence of tree species composition on soil and soil solution properties in two mixed spruce-beech stands with contrasting history in Southern Germany. Plant and Soil 240 (1), S. 47-56. DOI: 10.1023/A:1015822620431
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Rothe, A.; Huber, C.; Kreutzer, K.; Weis, W. (2002): Deposition and soil leaching in stands of Norway spruce and European Beech: Results from the Höglwald research in comparison with other European case studies. Plant and Soil 240 (1), S. 33-45. DOI: 10.1023/A:1015846906956
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Ewald, J. (2002): A probabilistic approach to estimating species pools from large compositional matrices. Journal of Vegetation Science 13 (2), S. 191-198. DOI: 10.1111/j.1654-1103.2002.tb02039.x
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Species pools are increasingly recognized as important controls of local plant community structure and diversity. While existing approaches to estimate their content and size either rely on phytosociological expert knowledge or on simple response models across environmental gradients, the proposed application of phytosociological smoothing according to Beals exploits the full information of plant co‐occurrence patterns statistically. Where numerous representative compositional data are available, the new method yields robust estimates of the potential of sites to harbour plant species.

To test the new method, a large phytosociological databank covering the forested regions of Oregon (US) was subsampled randomly and evenly across strata defined by geographic regions and elevation belts. The resulting matrix of species presence/absence in 874 plots was smoothed by calculating Beals' index of sociological favourability, which estimates the probability of encountering each species at each site from the actual plot composition and the pattern of species co‐occurrence in the matrix. In a second step, the resulting lists of sociologically probable species were intersected with complete species lists for each of 14 geographical subregions. Species pools were compared to observed species composition and richness. Species pool size exhibited much clearer spatial trends than plot richness and could be modelled much better as a function of climatic factors. In this framework the goal of modelling species pools is not to test a hypothesis, but to bridge the gap between manageable scales of empirical observation and the spatio‐temporal hierarchy of diversity patterns.

Rössler, U.; Kainz, J. (2002): Microscopic interface asymmetry and spin-splitting of electron subbands in semiconductor quantum structures. Solid State Communications 121 (6-7), S. 313-316. DOI: 10.1016/S0038-1098(02)00023-6
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Kainz, J.; Mikhailov, S.; Wensauer, A.; Rössler, U. (2002): Quantum dots in high magnetic fields: Calculation of ground-state properties. Physical Review B 65, 115305 (11). DOI: 10.1103/PhysRevB.65.115305
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Kainz, J.; Mikhailov, S.; Wensauer, A.; Rössler, U. (2002): Ground state energies of quantum dots in high magnetic fields: a new approach. Physica E: Low-dimensional Systems and Nanostructures 12 (1-4), S. 888-891. DOI: 10.1016/S1386-9477(01)00452-0
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2001

Rothe, A.; Binkley, D. (2001): Nutritional interactions in mixed species forests: a synthesis. Canadian Journal of Forest Research 31 (11), S. 1855-1870. DOI: 10.1139/x01-120
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Wensauer, A.; Kainz, J.; Suhrke, M.; Rössler, U. (2001): Circular Parabolic Quantum Dots with Repulsive Off-Center Impurities: An SDFT Study. physica status solidi (b) 224 (3), S. 675-679. DOI: 10.1002/(SICI)1521-3951(200104)224:3%3C675::AID-PSSB675%3E3.0.CO;2-1
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2000

Ewald, J. (2000): Rezension von Hunter, M. L. Jr. (Hrsg.): Maintaining Biodiversity in Forest Ecosystems. Forstwissenschaftliches Centralblatt 119, S. 245-246.

Ewald, J. (2000): Leidet die Buche (Fagus sylvatica L.) auf Carbonatböden der Bayerischen Alpen an Phosphormangel? Forstwissenschaftliches Centralblatt 119, S. 276-296.

Zahner, V.; Loy, H. (2000): Baumbrütende Mauersegler (Apus apus) und Eichenwirtschaft im Spessart. Ornithologischer Anzeiger 39, S. 187-196.
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Rothe, A.; Englschall, M.; Hurler, R.; Wittfoth, J.; Butterbach-Bahl, K. (2000): Nitratverlagerung in tieferen Bodenschichten eines süddeutschen Waldgebietes. Wasser und Boden 52 (11), S. 52-56.
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Ewald, J. (2000): The Partial Influence of Norway Spruce Stands on Understorey Vegetation in Montane Forests of the Bavarian Alps. Mountain Research and Development 20 (4), S. 364-371. DOI: 10.1659/0276-4741(2000)020[0364:TPIONS]2.0.CO;2
 mehr   Open Access

Natural mixed forests of European beech (Fagus sylvatica), Norway spruce (Picea abies), and silver fir (Abies alba) were widely replaced by spruce-dominated stands in the montane belt of the northern Calcareous Alps in historical times. This accounts for changing forest structure, diversity, and hemeroby. Observations in other parts of Europe suggest that this development should have led to a replacement of the native understorey vegetation by species typical of coniferous forests and to an increase in plants that are indicators for acidity and nitrogen. The statistical relationships between understorey vegetation structure and species richness, Ellenberg indicator values, and the proportion of Norway spruce in the tree layer were studied in 84 stands selected in a stratified random design in the Bavarian Alps, while controlling for the influence of the natural environment. The results show that the richness of coniferous forest species and the occurrence of acid indicators have been significantly favored by Norway spruce canopies, while understorey species characteristic of deciduous forests and nitrogen indicators have not been affected. While bryophytes and some shallow-rooted vascular plants respond positively to a coniferous canopy, most vascular plants are resilient to changes in the canopy. This can be attributed to the high buffering capacity of the soils under the mountain forests studied.

Ewald, J. (2000): The influence of coniferous canopies on understorey vegetation and soils in mountain forests of the northern Calcareous Alps. Applied Vegetation Science 3 (1), S. 123-134. DOI: 10.2307/1478926
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Compositional and edaphic gradients were studied in montane forests of the Bavarian Alps (Germany), in which natural mixed deciduous‐coniferous tree layers have been altered by past management in favour of Picea abies. Data on species composition and ecological factors were collected in a stratified random sample of 84 quadrats comprising a gradient from pure Picea to pure Fagus sylvatica stands. Data about the understorey composition were subjected to indirect (DCA) and direct gradient analysis (RDA) with the proportion of Picea in the canopy as a constraining variable. Three principal components of a matrix containing seven descriptors of mineral soil, relief and tree layer cover were included as covariables describing the variability of primary ecological factors. Gradients of organic topsoil morphology and chemistry were extracted correspondingly. Responses of individual species, species group and topsoil attributes were studied by simple and partial correlation analysis.

Mosses were significantly more abundant and diverse under Picea stands. Few graminoid and herb species were partially associated with Picea, and total understorey richness and cover did not differ systematically by stand type. No relationship between tree layer and understorey diversity was detected at the studied scale. Juvenile Fagus sylvatica was the only woody species significantly less abundant under Picea. In the topsoil lower base saturation, lower pH and larger C/N‐ratios in the litter layer were partially attributable to the proportion of Picea, only for base saturation a relationship was detected in greater soil depth also. The frequency of broad humus form types did not differ by tree species, nor was overall depth of organic forest floor attributable to canopy composition.

1999

Ewald, J. (1999): Soziologie und Standortbindung subalpiner Fichtenwälder in den Bayerischen Alpen. Tuexenia 19, S. 107-125.
 mehr   Open Access

Anhand von 251 aus dem gesamten bayerischen Alpenraum stammenden Vegetationsaufnahmen verschiedener Autoren wird eine floristisch und ökologisch begründete Gliederung der subalpinen Fichtenwälder dieser Region vorgeschlagen. Subalpiner Fichtenwald wird als oberhalb der aktuellen klimatischen Höhenverbreitungsgrenze von Fagus sylvatica stockende, von Picea abies dominierte Vegetation definiert. Mittels numerischer Ordination (DCA) werden 2 Hauptachsen der Artenzusam­mensetzung extrahiert. Achse 1 wird unter Heranziehung von Zeigerwertanalysen, Ausgangsgestein und stichprobenartigen Bodenprofilen als Substratgefälle zwischen kalk- und skelettreichen Rendzinen einerseits und versauerten Lehmböden andererseits interpretiert. Achse 2 wird als Gradient der biologischen Aktivität, der Auflagemächtigkeit und der Humusform gedeutet.Ausgehend von einer numerischen TWINSPAN-Klassifikation wird der Ordinationsraum in 6 Vege­tationstypen unterteilt, die ausführlicher diskutiert werden. Die in der Assoziation Adenostylo glabrae-Piceetum zusammengefaßten Karbonat-Fichtenwälder werden gegliedert in eine Untereinheit mäßig trockener (Subassoziation seslerietosum), eine sauerhumusreicher (lycopodietosum) und eine mäßig fri­scher Standorte (caricetosum ferrugineae). Die Silikat-Fichtenwälder des Homogyno-Piceetum werden gegliedert in die nährstoffreich-hangfeuchter (Subassoziation adenostyletosum alliariae) , stark saurer (typicum) und sehr sauer-feuchter (sphagnetosum) Standorte. Syntaxonomie und Nomenklatur werden diskutiert, die Einheiten werden, soweit möglich, mit den Gliederungen anderer Autoren parallelisiert.Schließlich wird die Bedeutung der vorgestellten Vegetationstypen als Grundlage waldbaulicher, landeskultureller und naturschützerischer Maßnahmen angesprochen.

Ewald, J. (1999): Relationships between floristic and micro site variability in coniferous forests of the Bavarian Alps. Phytocoenologia 29 (3), S. 327-344. DOI: 10.1127/phyto/29/1999/327
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High plant diversity and within-releve variance of indicator values in a large phytosociological dataset suggest that stands of montane coniferous forest communities of the Alps (suballiance Galio-Abietenion) possess mosaic structures of field layer vegetation caused by small-scale heterogeneity in microhabitats. In order to test this hy­pothesis in two representative stands species abundances, humus and soil morphology, pH, matrix potential and microtopography were recorded in linear transects of 1 m2 quadrats. Data were analysed by correspondence, cluster, simple and multiple correlation analysis. The hypothesis was confirmed in the Galio-Abietetum equisetetosum com­munity, where a pattern of dry acidic mounds and moist hollows explained much of the heterogeneous plant distribution. In the Adenostylo-Abietetum vaccinietosum community soil parameters were less variable and showed only a loose relationship to species composition. Pattern diversity, as measured by inter-releve-similarities and the DAHL index of uniformity, is considerably higher in the Galio-Abietetum community. On the ground of these findings different explanations of the observed diversity are put forward. In the Galio-Abietetum the contrast between highly acidic organic topsoil and well-buffered mineral soil results in a distinct microsite pattern, whereas base indica­tors in the Adenostylo-Abietetum appear as successional relics in an environment largely homogenized by an acid forest floor. Thus, a similiar species diversity and variance of ELLENBERG indicator values in phytosociological rei eves does not generally allow a prediction of microsite variability, as the causes of the coexistence of species with con­trasting ecological behaviour can differ.

1998

Warfvinge, P.; Kreutzer, K.; Rothe, A.; Walse, W. (1998): Modeling the effects of acid deposition on the biogeochemistry of the Hoeglwald spruce stand, FRG. Forest Ecology and Management 101 (1-3), S. 319-330. DOI: 10.1016/S0378-1127(97)00146-1
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Gessler, A.; Schneider, S.; von Sengbusch, D.; Weber, P.; Hanemann, U.; Huber, C.; Rothe, A.; Kreutzer, K.; Rennenberg, H. (1998): Field and laboratory experiments on net uptake of nitrate and ammonium by the roots of spruce (Picea abies) and beech (Fagus sylvatica) trees. New Phytologist 138 (2), S. 275-285. DOI: 10.1046/j.1469-8137.1998.00107.x
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1997

Rothe, A.; Weis, W.; Kreutzer, K.; Matthies, D.; Hess, U.; Ansorge, B. (1997): Changes in soil structure caused by the installation of time domain reflectometry probes and their influence on the measurement of soil moisture. Water Resources Research 33 (7), S. 1585-1593. DOI: 10.1029/97WR00677
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1994

Farrell, E.; Cummins, T.; Collins, J.; Beier, C.; Blanck, K.; Bredemeier, M.; de Visser, P.; Kreutzer, K.; Rasmussen, L.; Rothe, A.; Steinberg, N. (1994): A comparison of sites in the EXMAN project, with respect to atmospheric deposition and the chemical composition of the soil solution and foliage. Forest Ecology and Management 68 (1), S. 3-14. DOI: 10.1016/0378-1127(94)90133-3
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Beiträge zu wissenschaftlicher Konferenz/Tagung (peer-reviewed)

2020

Boeckmann, J.; Thielen, C. (2020): An approximation algorithm for network flow interdiction with unit costs and two capacities. Graphs and Combinatorial Optimization: from Theory to Applications (CTW2020 Proceedings) 5, S. 157-169. DOI: 10.1007/978-3-030-63072-0_13
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2019

Bazgan, C.; Herzel, A.; Ruzika, S.; Thielen, C.; Vanderpooten, D. (2019): An FPTAS for a General Class of Parametric Optimization Problems. Konferenzbeitrag für Proceedings of the 25th International Computing and Combinatorics Conference (COCOON) 11653, S. 25-37. DOI: 10.1007/978-3-030-26176-4_3
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Giudici, A.; Lu, T.; Thielen, C.; Zuidwijk, R. (2019): Sending a reliable cost-efficient flow through a stochastic timevarying network. Proceedings of the 10th Triennial Symposium on Transportation Analysis (TRISTAN) 2019, S. 1-4.

2018

Lorz, C.; Heckner, M. (2018): The Training Forest Trail of the Department of Forestry, Hochschule Weihenstephan-Triesdorf, University of Applied Sciences, Germany. SILVA 2018 Technische Universität Dresden, Tharandt, Sächsische Landesbibliothek − Staats- und Universitätsbibliothek, Dresden 2018.
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Schwahn, F.; Thielen, C. (2018): The Complexity of Escaping Labyrinths and Enchanted Forests. Konferenzbeitrag zu Proceedings of the 9th International Conference on Fun with Algorithms (FUN) 2018 (100), S. 1-13. DOI: 10.4230/LIPIcs.FUN.2018.30
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2017

Lorz, C.; Schmitthenner, M.; Schneider, B. (2017): Auswirkungen von Vorbau mit Weißtanne und Rotbuche auf den Humuszustand eines Fichtenreinbestandes. DBG Prints-Archiv 1204: Jahrestagung der DBG "Horizonte des Bodens", 2.-7. September 2017, Göttingen.
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Krause, H.; Faße, A.; Grote, U. (2017): Livelihood Strategies and Food Security-A Comparison Between Rural and Peri-Urban Kenya. Tropentag 2017.

Corsten, H.; Hopf, M.; Kasper, B.; Thielen, C. (2017): Regionalized assortment planning for multiple chain stores. Selected Papers of the Annual International Conference of the German Operations Research Society (GOR) 2017, S. 451-457. DOI: 10.1007/978-3-319-55702-1_60
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2016

Raith, A.; Thielen, C.; Tidswell, J. (2016): Modelling and optimising fuel consumption in traffic assignment problems. Proceedings of the 38th Australasian Transport Research Forum (ATRF) 2016, S. 1-13.
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Danelle, S.; Chae, E.; Grimm, D.; Pizarro, C.; Habring-Müller, A.; Vasseur, F.; Rakitsch, B.; Borgwardt, K.; Koenig, D.; Weigel, D. (2016): Genetic architecture of nonadditive inheritance in Arabidopsis thaliana hybrids. Proceedings of the National Academy of Sciences (PNAS) 113 (46), S. E7317-E7326. DOI: 10.1073/pnas.1615268113
mehr   Open Access

Kölker, K.; Mannweiler, C.; Thielen, C.; Lütjens, K. (2016): Time Relaxed Itinerary-Based Route Development for Airline Networks. Konferenzbeitrag für Proceedings of the 9th Triennial Symposium on Transportation Analysis (TRISTAN) 2016, S. 1-4.

Mgeni, C.; Müller, K.; Sieber, S.; Rybak, C.; Faße, A. (2016): Scaling-Up Effects of Food Value Chain Upgrading Strategies: Opportunities for Optimized Nutritional and Food Security for Local Food Systems in Tanzania. Tropentag 2016, S. 586.
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Krause, H.; Faße, A.; Grote, U. (2016): The impact of specializing in African indigenous vegetable production on food security among Kenyan vegetable producers. Econstor - Tagungsband zum 2. Symposium für Ökonomie im Gartenbau am 01. März 2016.
mehr   Open Access

Hofmeister, H.; Faße, A.; Grote, U. (2016): Die Bedeutung von privaten Lebensmittelstandards in den Supermarktwertschöpfungs-Ketten in Kenia am Beispiel von traditionellem Blattgemüse. Aktuelle Forschung in der Gartenbauökonomie: Nachhaltigkeit und Regionalität – Chancen und Herausforderungen für den Gartenbau. Tagungsband zum 2. Symposium für Ökonomie im Gartenbau, 1.März 2016, Thünen-Institut, Braunschweig.
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2015

Hamling, I.; O'Sullivan, M.; Thielen, C.; Walker, C. (2015): Improving resource efficiency in Internet cafés by virtualization and optimal user allocation. Proceedings of the 8th IEEE/ACM International Conference on Utility and Cloud Computing (UCC) 2015, S. 26-34. DOI: 10.1109/UCC.2015.17
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2014

Worreschk, S.; Kaufmann Alves, I.; Schmitt, T.; Thielen, C. (2014): Optimization of Transformation Processes of Drainage Systems in Rural Areas. Konferenzbeitrag für Proceedings of the 13th International Conference on Urban Drainage (ICUD) 2014, S. 1-8.

Schmitt, T.; Worreschk, S.; Kaufmann Alves, I.; Herold, F.; Thielen, C. (2014): An Optimization and Decision Support Tool for Long-Term Strategies in the Transformation of Urban Water Infrastructure. Konferenzbeitrag für Proceedings of the 11th International Conference on Hydroinformatics (HIC) 2014, S. 1-8.
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Krumke, S.; Schwahn, F.; Thielen, C. (2014): Being Negative Makes Life NP-hard (for Product Sellers). Konferenzbeitrag für Proceedings of the 7th International Conference on Fun with Algorithms (FUN) 2014 (8496), S. 277-288. DOI: 10.1007/978-3-319-07890-8_24
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Sugiyama, M.; Azencott, C.; Grimm, D.; Kawahara, Y.; Borgwardt, K. (2014): Multi-Task Feature Selection on Multiple Networks via Maximum Flows. Proceedings of the 2014 SIAM International Conference on Data Mining (SDM) 2014, S. 199-207. DOI: 10.1137/1.9781611973440.23
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2013

Röttgers, D.; Faße, A.; Grote, U. (2013): The Canola Oil Industry and EU Trade Integration: A Gravity Model Approach. Operations Research Proceedings 2012, S. 363-368. DOI: 10.1007/978-3-319-00795-3_54
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Bender, M.; Thielen, C.; Westphal, S. (2013): A Constant Factor Approximation for the Generalized Assignment Problem with Minimum Quantities and Unit Size Items. Proceedings of the 38th International Symposium on Mathematical Foundations of Computer Science (MFCS) 8087, S. 135-145. DOI: 10.1007/978-3-642-40313-2_14
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Feragen, A.; Petersen, J.; Grimm, D.; Dirksen, A.; Pedersen, J.; Borgwardt, K.; de Bruijne, M. (2013): Geometric tree kernels: Classification of COPD from airway tree geometry. International Conference on Information Processing in Medical Imaging IPMI 2013: Information Processing in Medical Imaging, S. 171-183. DOI: 10.1007/978-3-642-38868-2_15
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2012

Owolabi, M.; Faße, A.; Grote, U. (2012): Typical Farms in the Bio-Energy Value Chain: A Village Case Study in Tanzania. Tropentag 2012.

Faße, A.; Grote, U. (2012): Sufficiency and Sustainability of Agroforestry: What Matters: Today or Tomorrow? 2012 Conference, August 18-24, 2012, Foz do Iguacu, Brazil 126666, International Association of Agricultural Economists. DOI: 10.22004/ag.econ.126666
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Hoffmann, H.; Uckert, G.; Sieber, S.; Faße, A. (2012): Development and adjustments of sustainability indicators to evaluate out-grower schemes in bioenergy production: the case of Tanzania. Proceedings of the 9th European IFSA Symposium, 04.-07.07. 2012, Vienna, Austria, S. 2247-2256.
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2011

Sieber, S.; Bobert, J.; Dietrich, O.; Tscherning, K.; Polreich, S.; Schaefer, M.; Natkhin, M.; Kitalyi, A.; Emil, E.; Uckert, G.; Hoffmann, H.; Mpanda, M.; Mutabazi, K.; Büchner, M.; Msangi, S.; von Geibler, J.; Bienge, K.; Kennedy, K.; Grote, U.; Segerstedt, A.; Faße, A. (2011): Food Security in the Light of Climate Change and Bioenergy-Potentials to Stabilise Livelihoods for small-Scale Farming in Tanzania. Tropentag 2011.
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Röttgers, D.; Faße, A.; Grote, U. (2011): Sub-Saharan Africa’s Role in International Biofuel Trade. Tropentag 2011, S. 305.
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Faße, A.; Grote, U.; Kohlhase, S. (2011): The nexus between poverty and smallholders‘ investiments in agroforestry: A case study from Tanzania. Tropentag 2011, S. 152.
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Tsafnat, G.; Setzermann, P.; Partridge, S.; Grimm, D. (2011): Computational inference of difficult word boundaries in DNA languages. ISABEL '11: Proceedings of the 4th International Symposium on Applied Sciences in Biomedical and Communication Technologies 2011. DOI: 10.1145/2093698.2093709
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Krumke, S.; Thielen, C.; Westphal, S. (2011): Interval scheduling on related machines: Complexity and online algorithms. Proceedings of the 10th Workshop on Models and Algorithms for Planning and Scheduling Problems (MAPSP) 2011, S. 236-238.

2010

Thielen, C.; Westphal, S. (2010): Approximating the Traveling Tournament Problem with Maximum Tour Length 2. Proceedings of the 21st International Symposium on Algorithms and Computation (ISAAC) 6507, S. 303-314. DOI: 10.1007/978-3-642-17514-5_26
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Segerstedt, A.; Bobert, J.; Faße, A.; Grote, U.; Hoffmann, H.; Kabir, H.; Sieber, S.; Uckert, G. (2010): Potential of Sustainable Jatropha Oil Production in Tanzania. An Economic Land Evaluation Assessment.
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Kramer, K.; Budde, J.; Edelmann, K.; Stryi-Hipp, G. (2010): Mechtest – Developing a Methodology for Testing the Mechanical Snow and Wind Load on Solar Thermal Collectors. EuroSun 2010, 28 September - 1 October 2010 in Graz, Austria. DOI: 10.18086/eurosun.2010.15.11
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Thielen, C.; Krumke, S. (2010): Strong implementation of social choice function in dominant strategies. Proceedings of the 3rd International Workshop on Computational Social Choice (COMSOC) 2010, S. 319–330.
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Thielen, C.; Westphal, S. (2010): A combinatorial algorithm for strong implementation of social choice functions. Proceedings of the 3rd International Workshop on Computational Social Choice (COMSOC) 2010, S. 331-341.
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2009

Thielen, C.; Krumke, S. (2009): Truthful Mechanisms for Selfish Routing and Two-Parameter Agents. Konferenzbeitrag für Proceedings of the 2nd International Symposium on Algorithmic Game Theory (SAGT) 5814, S. 36-47. DOI: 10.1007/978-3-642-04645-2_5
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Khanal, S.; Faße, A.; Grote, U.; Hoermann, D. (2009): Promoting Quality in the Value Chain: The Case of Tea from Nepal. Tropentag, October 6-8, 2009, Hamburg.
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Thielen, C.; Krumke, S. (2009): Complexity of Strong Implementability. Konferenzbeitrag für Proceedings of the 4th Athens Colloquium on Algorithms and Complexity (ACAC) 2009 (4), S. 1-12. DOI: 10.4204/EPTCS.4.1
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