TY - GEN A1 - Webber, H. A1 - Cooke, D. A1 - Wang, C. A1 - Asseng, S. A1 - Martre, P. A1 - Ewert, F. A1 - Kimball, B. A1 - Hoogenboom, G. A1 - Evett, S. A1 - Chanzy, A. A1 - Garrigues, S. A1 - Olioso, A. A1 - Copeland, K.S. A1 - Steiner, J.L. A1 - Cammarano, D. A1 - Chen, Y. A1 - Crépeau, M. A1 - Diamantopoulos, E. A1 - Ferrise, R. A1 - Manceau, L. A1 - Gaiser, T. A1 - Gao, Y. A1 - Gayler, S. A1 - Guarin, J.R. A1 - Hunt, T. A1 - Jégo, G. A1 - Padovan, G. A1 - Pattey, E. A1 - Ripoche, D. A1 - Rodríguez, A. A1 - Ruiz-Ramos, M. A1 - Shelia, V. A1 - Srivastava, A.K. A1 - Supit, I. A1 - Tao, F. A1 - Thorp, K. A1 - Viswanathan, M. A1 - Weber, T. A1 - White, J. T1 - Wheat crop models underestimate drought stress in semi-arid and Mediterranean environments T2 - Field crops research N2 - Under climate change and increasingly extreme weather, projections of water demand and drought stress from process-based crop models can inform risk management and adaptation strategies. Previous studies investigating maize crop models demonstrated considerable error in the simulation of water use, and no similar evaluation of wheat crop models exists. The aims of this study were to (1) evaluate wheat crop models’ performance in reproducing observed daily evapotranspiration (ET) for Mediterranean and semi-arid environments, and (2) identify factors and processes associated with model error and uncertainty. These were assessed with an ensemble of wheat crop models for two experiments, one conducted in Bushland, Texas, USA (three seasons, deficit and full irrigation) and another in Avignon, France (four rainfed seasons) with winter bread and durum wheat, respectively. Models were calibrated with all observed data for crop growth. The model ensemble median underestimated water use in all environments evaluated, suggesting a systematic bias. The relative error in underestimating daily ET was constant across levels of atmospheric evaporative demand; therefore, the absolute error was greater for days with larger evaporative demand. This implies errors in the soil water balance increase more rapidly under high evaporative demand conditions. Using a potential versus reference crop evapotranspiration approach did not explain relative model performance. However, the sensitivity analysis indicated that simulation of atmospheric evaporative demand terms explained much more uncertainty in seasonal water use than terms related to soil depth or root growth. Errors in simulated leaf area index were associated with errors in daily simulated ET, but the relationship varied with the growth stage. Collectively, the results suggest the need to improve simulation of atmospheric ET demand to avoid underestimating projected impacts of drought or required water resource availability for viable production systems. KW - Crop models KW - Evapotranspiration KW - Wheat KW - Drought stress KW - Climate risk Y1 - 2025 U6 - https://doi.org/10.1016/j.fcr.2025.110032 SN - 0378-4290 VL - 332 SP - 1 EP - 18 PB - Elsevier BV CY - Amsterdam ER - TY - GEN A1 - Gotsch, Matthias A1 - Hipp, Christiane A1 - Lerngau, M. A1 - Müller, G. A1 - Reuter, N. A1 - Saam, M. A1 - Weber, Lars T1 - Mikro- und Makroökonomische Aspekte der Dienstleistungsproduktivität - State of the Art Y1 - 2011 ER - TY - RPRT A1 - Grilo, Antonio A1 - Concalves, J. A1 - Piotrowski, Krzysztof A1 - Peter, Steffen A1 - Holczer, T. A1 - Buttyan, L. A1 - Selhorst, M. A1 - Fortunato, C. A1 - Weber, G. T1 - System Prototypes Y1 - 2011 ER - TY - GEN A1 - Dilly, Oliver A1 - Franke, G. A1 - Nii-Annang, Seth A1 - Weber, K. A1 - Freese, Dirk A1 - Zyakun, Anatoly A1 - Hüttl, Reinhard F. T1 - Soil respiratory indicators including carbon isotope characteristics in response to copper T2 - Geomicrobiology Journal Y1 - 2008 U6 - https://doi.org/10.1080/01490450802402992 SN - 1521-0529 VL - 25 IS - 7-8 SP - 390 EP - 395 ER - TY - GEN A1 - Porada, Philipp A1 - Bader, Maaike Y. A1 - Berdugo, Monica B. A1 - Colesie, Claudia A1 - Ellis, Christopher J. A1 - Giordani, Paolo A1 - Herzschuh, Ulrike A1 - Ma, Yunyao A1 - Launiainen, Samuli A1 - Nascimbene, Juri A1 - Petersen, Imke A1 - Raggio Quílez, José A1 - Rodríguez-Caballero, Emilio A1 - Rousk, Kathrin A1 - Sancho, Leopoldo G. A1 - Scheidegger, Christoph A1 - Seitz, Steffen A1 - Van Stan, John T. A1 - Veste, Maik A1 - Weber, Bettina A1 - Weston, David J. T1 - A research agenda for non-vascular photoautotrophs under climate change T2 - New Phytologist N2 - Non-vascular photoautotrophs (NVP), including bryophytes, lichens, terrestrial algae, and cyanobacteria, are increasingly recognized as being essential to ecosystem functioning in many regions of the world. Current research suggests that climate change may pose a substantial threat to NVP, but it is highly uncertain to what extent this will affect the associated ecosystem functions and services. Here, we propose a research agenda to address this urgent question, focusing on physiological and ecological processes that link NVP to ecosystem functions while also taking into account the substantial taxonomic diversity across multiple ecosystem types. Accordingly, we developed a new categorization scheme, based on microclimatic gradients, which simplifies the high physiological and morphological diversity of NVP and worldwide distribution with respect to several broad habitat types. We found that habitat-specific ecosystem functions of NVP will likely be substantially affected by climate change, and more quantitative process understanding is required on (1) potential for acclimation (2) response to elevated CO2 (3) role of the microbiome and (4) feedback to (micro)climate. We suggest an integrative approach of innovative, multi-method laboratory and field experiments and eco-physiological modelling, for which sustained scientific collaboration on NVP research will be essential. KW - biocrusts KW - climate change KW - ecosystem services KW - epiphytes KW - functional traits KW - lichens and bryophytes KW - model–data integration KW - nonvascular vegetation Y1 - 2022 U6 - https://doi.org/10.1111/nph.18631 SN - 0028-646X SN - 1469-8137 VL - 237 (2023) IS - 5 SP - 1495 EP - 1504 ER -