Invasive species' leaf traits and dissimilarity from natives shape their impact on nitrogen cycling : a meta-analysis
Lee, Marissa R. (Duke University. Department of Biology)
Bernhardt, Emily S. (Duke University. Department of Biology)
van Bodegom, Peter (Leiden University. Institute of Environmental Sciences)
Cornelissen, J. H. C. (Vrije Universiteit Amsterdam. Department of Ecological Science)
Kattge, Jens (Max Planck Institute for Biogeochemistry)
Laughlin, Daniel C. (University of Waikato. Environmental Research Institute (New Zealand))
Niinemets, Ülo (Estonian University of Life Sciences. Department of Plant Physiology)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Reich, Peter (University of Minnesota. Department of Forest Resources)
Yguel, Benjamin (Sorbonne Universités. Centre d'Ecologie et des Sciences de la Conservation)
Wright, Justin P. (Duke University. Department of Biology)

Data:	2016
Resum:	Many exotic species have little apparent impact on ecosystem processes, whereas others have dramatic consequences for human and ecosystem health. There is growing evidence that invasions foster eutrophication. We need to identify species that are harmful and systems that are vulnerable to anticipate these consequences. Species' traits may provide the necessary insights. We conducted a global meta-analysis to determine whether plant leaf and litter functional traits, and particularly leaf and litter nitrogen (N) content and carbon: nitrogen (C : N) ratio, explain variation in invasive species' impacts on soil N cycling. Dissimilarity in leaf and litter traits among invaded and noninvaded plant communities control the magnitude and direction of invasion impacts on N cycling. Invasions that caused the greatest increases in soil inorganic N and mineralization rates had a much greater litter N content and lower litter C : N in the invaded than the reference community. Trait dissimilarities were better predictors than the trait values of invasive species alone. Quantifying baseline community tissue traits, in addition to those of the invasive species, is critical to understanding the impacts of invasion on soil N cycling.
Ajuts:	European Commission 610028
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Functional trait ; Leaf carbon to nitrogen ; Leaf nitrogen content ; Mineralization ; Nitrogen cycling ; Nutrient-use strategy ; Plant invasions
Publicat a:	The new phytologist, Vol. 213, Issue 1 (January 2017) , p. 128-139, ISSN 1469-8137

DOI: 10.1111/nph.14115

Postprint 31 p, 693.3 KB

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