 visitant ::
identificació
|
|||||||||||||||
|
Cerca | Lliura | Ajuda | Servei de Biblioteques | Sobre el DDD | Català English Español | |||||||||
| Pàgina inicial > Articles > Articles publicats > Traits of dominant plant species drive normalized difference vegetation index in grasslands globally |
(Friedrich Schiller University Jena. Institute of Biodiversity) (Martin-Luther University Halle-Wittenberg) (Universidade Federal do Rio Grande do Su. Department of Ecology) (Martin-Luther University Halle-Wittenberg) (Czech University of Life Sciences. Department of Forest Ecology) (Shahjalal University of Science and Technology. Department of Forestry and Environmental Science) (University of Göttingen) (Czech University of Life Sciences. Department of Forest Ecology) (Masaryk University. Department of Botany and Zoology) (Institute for Alpine Environmen) (German Centre for Integrative Biodiversity Research (Halle-Jena-Leipzig, Alemanya)) (University of South Bohemia. Department of Botany) (University of Nottingham. School of Geography) (Centro de Investigaciones sobre Desertificación) (Ghent University) (German Centre for Integrative Biodiversity Research (Halle-Jena-Leipzig, Alemanya)) (University of Rostock) (University of Bayreuth. Disturbance Ecology) (Swiss Federal Research Institute WS) (German Centre for Integrative Biodiversity Research (Halle-Jena-Leipzig, Alemanya)) (Université de Picardie Jules Verne) (Leiden University) (Leuphana University) (University of Life Sciences) (Universidade Federal do Rio Grande do Su. Department of Botany) (Wageningen University & Research) (Centre de Recerca Ecològica i d'Aplicacions Forestals) (University of the Andes) (University of Leeds. School of Geography) (University of Michigan. School for Environment and Sustainability) (German Centre for Integrative Biodiversity Research (Halle-Jena-Leipzig, Alemanya)) (Santa Clara University. Department of Biology) (Palmengarten der Stadt Frankfurt am Main) (University of Nottingham. School of Geography) (Universidade Federal do Rio Grande do Su. Department of Ecology) (Université Montpellier) (Universidade Federal do Rio Grande do Sul. Department of Ecology)
| Data: | 2023 |
| Resum: | Aim:Theoretical, experimental and observational studies have shown that biodiversity-ecosystem functioning (BEF) relationships are influenced by functional community structure through two mutually non-exclusive mechanisms: (1) the dominance effect (which relates to the traits of the dominant species); and (2) the niche partitioning effect [which relates to functional diversity (FD)]. Although both mechanisms have been studied in plant communities and experiments at small spatial extents, it remains unclear whether evidence from small-extent case studies translates into a generalizable macroecological pattern. Here, we evaluate dominance and niche partitioning effects simultaneously in grassland systems world-wide. Location: Two thousand nine hundred and forty-one grassland plots globally. Time period:2000-2014. Major taxa studied: Vascular plants. Methods: We obtained plot-based data on functional community structure from the global vegetation plot database "sPlot", which combines species composition with plant trait data from the "TRY" database. We used data on the community-weighted mean (CWM) and FD for 18 ecologically relevant plant traits. As an indicator of primary productivity, we extracted the satellite-derived normalized difference vegetation index (NDVI) from MODIS. Using generalized additive models and deviation partitioning, we estimated the contributions of trait CWM and FD to the variation in annual maximum NDVI, while controlling for climatic variables and spatial structure. Results: Grassland communities dominated by relatively tall species with acquisitive traits had higher NDVI values, suggesting the prevalence of dominance effects for BEF relationships. We found no support for niche partitioning for the functional traits analysed, because NDVI remained unaffected by FD. Most of the predictive power of traits was shared by climatic predictors and spatial coordinates. This highlights the importance of community assembly processes for BEF relationships in natural communities. Main conclusions: Our analysis provides empirical evidence that plant functional community structure and global patterns in primary productivity are linked through the resource economics and size traits of the dominant species. This is an important test of the hypotheses underlying BEF relationships at the global scale. |
| Ajuts: | European Commission 639706 Agencia Estatal de Investigación PID2019-110521GB-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1005 European Commission 610028 |
| Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.  |
| Llengua: | Anglès |
| Document: | Article ; recerca ; Versió publicada |
| Matèria: | Biodiversity-ecosystem functioning ; Biodiversity ; Community-weighted mean ; Ecosystem functioning ; Functional diversity ; SPlot ; Traits ; Vegetation |
| Publicat a: | Global Ecology and Biogeography, Vol. 32, Issue 5 (May 2023) , p. 695-706, ISSN 1466-8238 |
