Per capita interactions and stress tolerance drive stress-induced changes in biodiversity effects on ecosystem functions

Nature Communications
Jan M BaertFrederik De Laender

Abstract

Environmental stress changes the relationship between biodiversity and ecosystem functions, but the underlying mechanisms are poorly understood. Because species interactions shape biodiversity-ecosystem functioning relationships, changes in per capita interactions under stress (as predicted by the stress gradient hypothesis) can be an important driver of stress-induced changes in these relationships. To test this hypothesis, we measure productivity in microalgae communities along a diversity and herbicide gradient. On the basis of additive partitioning and a mechanistic community model, we demonstrate that changes in per capita interactions do not explain effects of herbicide stress on the biodiversity-productivity relationship. Instead, assuming that the per capita interactions remain unaffected by stress, causing species densities to only change through differences in stress tolerance, suffices to predict the stress-induced changes in the biodiversity-productivity relationship and community composition. We discuss how our findings set the stage for developing theory on how environmental stress changes biodiversity effects on ecosystem functions.

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Citations

Feb 9, 2019·Ecology Letters·Viktoriia RadchukStephanie Kramer-Schadt
Apr 28, 2020·Ecology Letters·Jurg W Spaak, Frederik De Laender
Jun 6, 2018·Ecology Letters·Jan M BaertFrederik De Laender
Dec 6, 2018·Scientific Reports·Maria Cuenca CambroneroLuisa Orsini
Dec 5, 2018·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Cayetano Gutiérrez-CánovasNúria Bonada
Jun 25, 2019·Frontiers in Microbiology·Coco KoedooderKoen Sabbe
Oct 16, 2016·Trends in Ecology & Evolution·Frederik De LaenderPaul J Van den Brink
May 13, 2021·Ecology Letters·Francesco Polazzo, Andreu Rico

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Methods Mentioned

BETA
environmental stress

Software Mentioned

R

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