caa a22 4500 606220291 CHVBK 20210128101123.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s11104-015-2471-z doi (NATIONALLICENCE)springer-10.1007/s11104-015-2471-z Climate change effects on litter decomposition: intensive drought leads to a strong decrease of litter mixture interactions [Elektronische Daten] [Mathieu Santonja, Catherine Fernandez, Thierry Gauquelin, Virginie Baldy] Background: Litter decomposition is a fundamental process of biogeochemical cycles, and there is astrong consensus that litter mixture interactions are one of the factors driving the decomposition process. A better understanding of how climate change can alter interactions between species and the litter decomposition process could facilitate projections of ecosystem functioning into the future. Methods: A 24-month litterbag decomposition experiment was carried out in a Mediterranean forest to analyze the effects of climate and species diversity changes on litter mixture interactions and the decomposition process. Results: In the control plot, synergistic interactions increased with time and species diversity in litter mixtures, leading to more efficient litter decomposition. Drier conditions obtained in the field with a rain exclusion device decreased decomposition rates, resulting in three-fold less synergistic interactions and five-fold more antagonistic interactions during the decomposition process. Furthermore, synergistic interactions were better preserved in the drought conditions with increasing number of species. Conclusions: Our findings underline how a longer drought season could strongly affect the relationship between biodiversity and ecosystem functioning. Drier climate led to slower mass loss rates and a strong shift in the litter mixture interactions, with fewer synergistic interactions and more antagonistic interactions. Springer International Publishing Switzerland, 2015 Biodiversity-functioning relationship nationallicence Climate change nationallicence Drought increase nationallicence Litter decomposition nationallicence Litter mixtures nationallicence Non-additive effect nationallicence CV : Coefficient of variation nationallicence DSH : Diversity-stability hypothesis nationallicence IMC : Improved microenvironmental condition nationallicence NAE : Non-additive effect nationallicence RME : Relative mixture effect nationallicence Santonja Mathieu Institut Méditerranéen de Biodiversité et d'Ecologie - IMBE UMR CNRS - Aix Marseille Université - IRD - Avignon Université, CS 80249, Case 4, 13331, Marseille, Cedex 03, France aut Fernandez Catherine Institut Méditerranéen de Biodiversité et d'Ecologie - IMBE UMR CNRS - Aix Marseille Université - IRD - Avignon Université, CS 80249, Case 4, 13331, Marseille, Cedex 03, France aut Gauquelin Thierry Institut Méditerranéen de Biodiversité et d'Ecologie - IMBE UMR CNRS - Aix Marseille Université - IRD - Avignon Université, CS 80249, Case 4, 13331, Marseille, Cedex 03, France aut Baldy Virginie Institut Méditerranéen de Biodiversité et d'Ecologie - IMBE UMR CNRS - Aix Marseille Université - IRD - Avignon Université, CS 80249, Case 4, 13331, Marseille, Cedex 03, France aut Plant and Soil Springer International Publishing 393/1-2(2015-08-01), 69-82 0032-079X 393:1-2<69 2015 393 11104 https://doi.org/10.1007/s11104-015-2471-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11104-015-2471-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Santonja Mathieu Institut Méditerranéen de Biodiversité et d'Ecologie - IMBE UMR CNRS - Aix Marseille Université - IRD - Avignon Université, CS 80249, Case 4, 13331, Marseille, Cedex 03, France aut NATIONALLICENCE 700 1- Fernandez Catherine Institut Méditerranéen de Biodiversité et d'Ecologie - IMBE UMR CNRS - Aix Marseille Université - IRD - Avignon Université, CS 80249, Case 4, 13331, Marseille, Cedex 03, France aut NATIONALLICENCE 700 1- Gauquelin Thierry Institut Méditerranéen de Biodiversité et d'Ecologie - IMBE UMR CNRS - Aix Marseille Université - IRD - Avignon Université, CS 80249, Case 4, 13331, Marseille, Cedex 03, France aut NATIONALLICENCE 700 1- Baldy Virginie Institut Méditerranéen de Biodiversité et d'Ecologie - IMBE UMR CNRS - Aix Marseille Université - IRD - Avignon Université, CS 80249, Case 4, 13331, Marseille, Cedex 03, France aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 393/1-2(2015-08-01), 69-82 0032-079X 393:1-2<69 2015 393 11104