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Drought and ecosystem carbon cycling |
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| Authors: | MK van der Molen AJ DolmanP Ciais T EglinN Gobron BE LawP Meir W PetersOL Phillips M ReichsteinT Chen SC DekkerM Doubková MA FriedlM Jung BJJM van den HurkRAM de Jeu B KruijtT Ohta KT RebelS Plummer SI SeneviratneS Sitch AJ Teuling GR van der WerfG Wang |
| Institution: | a Department of Hydrology and Geo-Environmental Sciences, Faculty of Earth and Life Sciences, VU-University Amsterdam, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands b Meteorology and Air Quality Group, Wageningen University and Research Centre, P.O. box 47, 6700 AA Wageningen, The Netherlands c LSCE CEA-CNRS-UVSQ, Orme des Merisiers, F-91191 Gif-sur-Yvette, France d Institute for Environment and Sustainability, EC Joint Research Centre, TP 272, 2749 via E. Fermi, I-21027 Ispra, VA, Italy e College of Forestry, Oregon State University, Corvallis, OR 97331-5752 USA f School of Geosciences, University of Edinburgh, EH8 9XP Edinburgh, UK g School of Geography, University of Leeds, Leeds LS2 9JT, UK h Max Planck Institute for Biogeochemistry, PO Box 100164, D-07701 Jena, Germany i Department of Environmental Sciences, Copernicus Institute of Sustainable Development, Utrecht University, PO Box 80115, 3508 TC Utrecht, The Netherlands j Institute of Photogrammetry and Remote Sensing, Vienna University of Technology, Gusshausstraße 27-29, 1040 Vienna, Austria k Geography and Environment, Boston University, 675 Commonwealth Avenue, Boston, MA 02215, USA l Department of Global Climate, Royal Netherlands Meteorological Institute, P.O. Box 201, 3730 AE, De Bilt, The Netherlands m Earth System Science and Climate Change, Wageningen University and Research Centre, P.O. box 47, 6700 AA Wageningen, The Netherlands n Graduate School of Bioagricultural Sciences, Nagoya University, Furo-Cho, Chikusa-Ku, Nagoya, 464-8601 Japan o IGBP-ESA Joint Projects Office, ESA-ESRIN, Via Galileo Galilei, Casella Postale 64, 00044 Frascati, Italy p Institute for Atmospheric and Climate Science, CHN N11, Universitätsstrasse 16, CH-16 8092 Zurich, Switzerland r Hydrology and Quantitative Water Management Group, Wageningen University and Research Centre, P.O. box 47, 6700 AA Wageningen, The Netherlands |
| Abstract: | Drought as an intermittent disturbance of the water cycle interacts with the carbon cycle differently than the ‘gradual’ climate change. During drought plants respond physiologically and structurally to prevent excessive water loss according to species-specific water use strategies. This has consequences for carbon uptake by photosynthesis and release by total ecosystem respiration. After a drought the disturbances in the reservoirs of moisture, organic matter and nutrients in the soil and carbohydrates in plants lead to longer-term effects in plant carbon cycling, and potentially mortality. Direct and carry-over effects, mortality and consequently species competition in response to drought are strongly related to the survival strategies of species. Here we review the state of the art of the understanding of the relation between soil moisture drought and the interactions with the carbon cycle of the terrestrial ecosystems. We argue that plant strategies must be given an adequate role in global vegetation models if the effects of drought on the carbon cycle are to be described in a way that justifies the interacting processes. |
| Keywords: | Drought Forest ecosystem Carbon cycle Water use efficiency Stomatal conductance Climate change |
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