Impact of abundance weighting on the response of seed traits to climate and land use
2008
Pakeman, R. J. | Garnier, Éric | Lavorel, S. | Ansquer, P. | Castro, H. | Cruz, P. | Dolezal, J. | Eriksson, O. | Freitas, H. | Golodets, C. | Kigel, J. | Kleyer, M. | Leps, J. | Meier, T. | Papadimitriou, M. | Papanastasis, V. P. | Quested, H. | Quetier, F. | Rusch, G. | Sternberg, M. | Theau, J. P. | Thebault, A. | Vile, D. | Macaulay Institute | 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) | 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) | Station alpine Joseph Fourier - UMS 3370 (SAJF) ; Université Joseph Fourier - Grenoble 1 (UJF)-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) | Centre for Functional ecology ; Universidade de Coimbra = University of Coimbra [Portugal] (UC) | Faculty of Biological Sciences ; University of South Bohemia [České Budějovice, Czechia] | Institute of Botany, Section of Plant Ecology ; Czech Academy of Sciences [Prague] (CAS) | Department of Botany ; Stockholm University | 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) | Institute of Entomology ; University of South Bohemia [České Budějovice, Czechia]-Czech Academy of Sciences [Prague] (CAS) | Laboratory of Rangeland Ecology ; Aristotle University of Thessaloniki | Norwegian Institute for Nature Research (NINA) | Department of Plant Sciences ; Tel Aviv University (TAU) | Laboratory of Ecological Systems ; Ecole Polytechnique Fédérale de Lausanne (EPFL) | Écophysiologie des Plantes sous Stress environnementaux (LEPSE) ; Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)
International audience
Mostrar más [+] Menos [-]Inglés. 1. Many studies have identified relationships between plant reproductive behaviour and environmental conditions. However, they have all been based on cross-species analysis and take no account of the relative abundance of species with vegetation. 2. Using two reproductive traits - seed mass and dispersal vector - as examples, a range of previously identified relationships were tested using both unweighted and weighted-by-abundance data collected from land-use transitions at 12 sites across Europe. 3. Seed mass was correlated positively with most measures of temperature (stronger relationships for unweighted data) and declined against measures of disturbance (stronger relationships with weighted data). It was not related consistently to measures of water availability. 4. There was some evidence that endozoochory was associated with damper environments, hoarding with drier ones and exozoochory with more fertile habitats. 5. Weighting reduced the slope of relationships between seed mass and environmental variables, possibly indicating that dominance within vegetation is determined by land use after the operation of a climatic filter. Fewer significant relationships were detected for weighted dispersal mechanisms compared to unweighted ones, indicating less difference of the dominants from other species with regard to this trait. 6. Synthesis. This analysis shows that weighting by abundance in the vegetation (compared to unweighted analysis) has a significant impact on the relationships between key species traits and a range of environmental parameters related to climate and land use, and that this impact was not consistent in its effects.
Mostrar más [+] Menos [-]Palabras clave de AGROVOC
Información bibliográfica
Este registro bibliográfico ha sido proporcionado por Institut national de la recherche agronomique