Leaf traits capture the effects of land use changes and climate on litter decomposability of grasslands across Europe
2009
Fortunel, Claire | Garnier, Éric | Joffre, Richard | Kazakou, Elena | Quested, H. | Grigulis, K. | Lavorel, S. | Ansquer, P. | Castro, H. | Cruz, P. | Dolezal, J. | Eriksson, O. | Freitas, H. | Golodets, C. | Jouany, Claire | Kigel, J. | Kleyer, M. | Lehsten, V. | Leps, J. | Meier, T. | Pakeman, R. | Papadimitriou, M. | Papanastasis, V. P. | Quetier, F. | Robson, M. | Sternberg, M. | Theau, J. P. | Thebault, A. | Zarovali, M. | Centre d’Ecologie Fonctionnelle et Evolutive (CEFE) ; Université Paul-Valéry - Montpellier 3 (UPVM)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École Pratique des Hautes Études (EPHE) ; Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [Occitanie])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro) | Department of Botany ; Stockholm University | Laboratoire d'Ecologie Alpine (LECA) ; Université Joseph Fourier - Grenoble 1 (UJF)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS) | Agrosystèmes Cultivés et Herbagers (ARCHE) ; Institut National de la Recherche Agronomique (INRA)-École nationale supérieure agronomique de Toulouse (ENSAT, INP-ENSAT, AgroToulouse, INP-AgroToulouse) ; Institut National Polytechnique (Toulouse) (Toulouse INP) ; Communauté d'universités et établissements de Toulouse (Comue de Toulouse)-Communauté d'universités et établissements de Toulouse (Comue de Toulouse)-Institut National Polytechnique (Toulouse) (Toulouse INP) ; Communauté d'universités et établissements de Toulouse (Comue de Toulouse)-Communauté d'universités et établissements de Toulouse (Comue de Toulouse) | Department of Botany ; Universidade de Coimbra = University of Coimbra [Portugal] (UC) | Botany Department ; University of South Bohemia [České Budějovice, Czechia] | Institute of Plant Sciences and Genetics in Agriculture ; The Hebrew University of Jerusalem (HUJ) | Landscape Ecology Group ; Carl Von Ossietzky Universität Oldenburg = Carl von Ossietzky University of Oldenburg (OFFIS) | Macaulay Institute | Laboratory of Rangeland Ecology ; Aristotle University of Thessaloniki | Department of Plant Sciences ; Tel Aviv University (TAU) | ANR-05-BDIV-0014,A-BI-ME,Activités humaines, dynamique et gestion de la biodiversité en milieu méditerranéen(2005)
International audience
اظهر المزيد [+] اقل [-]إنجليزي. Land use and climate changes induce shifts in plant functional diversity and community structure, thereby modifying ecosystem processes. This is particularly true for litter decomposition, an essential process in the biogeochemical cycles of carbon and nutrients. In this study, we asked whether changes in functional traits of living leaves in response to changes in land use and climate were related to rates of litter potential decomposition, hereafter denoted litter decomposability, across a range of 10 contrasting sites. To disentangle the different control factors on litter decomposition, we conducted a microcosm experiment to determine the decomposability under standard conditions of litters collected in herbaceous communities from Europe and Israel. We tested how environmental factors ( disturbance and climate) affected functional traits of living leaves and how these traits then modified litter quality and subsequent litter decomposability. Litter decomposability appeared proximately linked to initial litter quality, with particularly clear negative correlations with lignin-dependent indices ( litter lignin concentration, lignin : nitrogen ratio, and fiber component). Litter quality was directly related to community-weighted mean traits. Lignin-dependent indices of litter quality were positively correlated with community-weighted mean leaf dry matter content (LDMC), and negatively correlated with community-weighted mean leaf nitrogen concentration (LNC). Consequently, litter decomposability was correlated negatively with community-weighted mean LDMC, and positively with community-weighted mean LNC. Environmental factors ( disturbance and climate) influenced community-weighted mean traits. Plant communities experiencing less frequent or less intense disturbance exhibited higher community-weighted mean LDMC, and therefore higher litter lignin content and slower litter decomposability. LDMC therefore appears as a powerful marker of both changes in land use and of the pace of nutrient cycling across 10 contrasting sites.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
تم تزويد هذا السجل من قبل Institut national de la recherche agronomique