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Plant functional trait diversity regulates the nonlinear response of productivity to regional climate change in Tibetan alpine grasslands
Wu, Jianshuang ;  Wurst, Susanne ;  Zhang, Xianzhou

HaupttitelPlant functional trait diversity regulates the nonlinear response of productivity to regional climate change in Tibetan alpine grasslands
AutorWu, Jianshuang
AutorWurst, Susanne
AutorZhang, Xianzhou
Seitenzahl10 S.
Freie SchlagwörterBiodiversity; Climate-change ecology; Ecosystem ecology; Grassland ecology
DDC570 Biowissenschaften; Biologie
Auch erschienen inScientific Reports. - 6 (2016), Artikel Nr. 35649
ZusammenfassungThe biodiversity-productivity relationship is still under debate for alpine grasslands on the Tibetan Plateau. We know little about direct and indirect effects of biotic and abiotic drivers on this relationship, especially in regard to plant functional trait diversity. Here, we examine how aboveground net primary productivity (ANPP) and precipitation use efficiency (PUE) respond to climate, soil and community structure across alpine grasslands on the Northern Tibetan Plateau. We found that both ANPP and PUE showed nonlinear patterns along water availability and site altitude variation, which together accounted for 80.3% and 68.8% of variation in ANPP and PUE, respectively, by optimal generalized additive models. Functional trait divergence (FTD) and community weighted mean (CWM) of plant functional traits were as important as plant species diversity (PSD) for explaining the nonlinear productivity-climate relationship. These findings were confirmed by results from principal component analyses and structural equation models. We also found that FTD was negatively correlated with PSD across different alpine grasslands. Our results implicate: first, the combinatorial influences of temperature and precipitation gradients are important for predicting alpine grassland dynamics; second, the convergence and divergence of plant functional traits may have the potential to elucidate the effect of plant diversity on ecosystem functionality.
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Fachbereich/EinrichtungFB Biologie, Chemie, Pharmazie
Erscheinungsjahr2016
Dokumententyp/-SammlungenWissenschaftlicher Artikel
SpracheEnglisch
RechteCreative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Anmerkungen des AutorsDer Artikel wurde in einer reinen Open-Access-Zeitschrift publiziert.
Erstellt am11.11.2016 - 12:46:33
Letzte Änderung11.11.2016 - 12:47:52
 
Statische URLhttp://edocs.fu-berlin.de/docs/receive/FUDOCS_document_000000025699
DOI10.1038/srep35649
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