Plant diversity effects on grassland productivity are robust to both nutrient enrichment and drought

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https://hdl.handle.net/11299/184572

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Plant diversity effects on grassland productivity are robust to both nutrient enrichment and drought

Authors

Craven, Dylan

Isbell, Forest

Manning, Pete

Connolly, John

Bruelheide, Helge

Ebeling, Anne

Roscher, Christiane

Van Ruijven, Jasper

Weigelt, Alexandra

Wilsey, Brian

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Published Date

2016

Publisher

The Royal Society

Type

Article

Abstract

Global change drivers are rapidly altering resource availability and biodiversity. While there is consensus that greater biodiversity increases the functioning of ecosystems, the extent to which biodiversity buffers ecosystem productivity in response to changes in resource availability remains unclear. We use data from 16 grassland experiments across North America and Europe that manipulated plant species richness and one of two essential resources—soil nutrients or water—to assess the direction and strength of the interaction between plant diversity and resource alteration on above-ground productivity and net biodiversity, complementarity, and selection effects. Despite strong increases in productivity with nutrient addition and decreases in productivity with drought, we found that resource alterations did not alter biodiversity–ecosystem functioning relationships. Our results suggest that these relationships are largely determined by increases in complementarity effects along plant species richness gradients. Although nutrient addition reduced complementarity effects at high diversity, this appears to be due to high biomass in monocultures under nutrient enrichment. Our results indicate that diversity and the complementarity of species are important regulators of grassland ecosystem productivity, regardless of changes in other drivers of ecosystem function.

Keywords

plant diversity

global change drivers

resource amendment

resource reduction

soil nutrients

drought

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Dr. Peter Reich

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10.1098/rstb.2015.0277

Previously Published Citation

Craven, D., Isbell, F., Manning, P., et al. (2016). Plant diversity effects on grassland productivity are robust to both nutrient enrichment and drought. Phil. Trans. R. Soc. B, 371(1694), 20150277.

Suggested citation

Craven, Dylan; Isbell, Forest; Manning, Pete; Connolly, John; Bruelheide, Helge; Ebeling, Anne; Roscher, Christiane; Van Ruijven, Jasper; Weigelt, Alexandra; Wilsey, Brian; Beierkuhnlein, Carl; De Luca, Enrica; Griffin, John N; Hautier, Yann; Hector, Andy; Jentsch, Anke; Kreyling, Jürgen; Lanta, Vojtech; Loreau, Michel; Meyer, Sebastian T; Mori, Akira S; Naeem, Shahid; Palmborg, Cecilia; Polley, H Wayne; Reich, Peter B; Schmid, Bernhard; Siebenkäs, Alrun; Seabloom, Eric; Thakur, Madhav P; Tilman, David; Vogel, Anja; Eisenhauer, Nico. (2016). Plant diversity effects on grassland productivity are robust to both nutrient enrichment and drought. Retrieved from the University Digital Conservancy, 10.1098/rstb.2015.0277.

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