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

Jan M. Baert; Colin R. Janssen; Koen Sabbe; Frédérik De Laender

doi:10.1038/ncomms12486

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

Jan M. Baert, Colin R. Janssen, Koen Sabbe, Frédérik De Laender

Résultats de recherche: Contribution à un journal/une revue › Article

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Résumé

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.

langue originale	Anglais
Numéro d'article	12486
journal	Nature Communications
Numéro de publication	7
Les DOIs	https://doi.org/10.1038/ncomms12486
état	Publié - 18 août 2016

Empreinte digitale

biological diversity

Biodiversity

ecosystems

Herbicides

Ecosystems

Ecosystem

Microalgae

interactions

herbicides

gradients

productivity

Productivity

Chemical analysis

Citer ceci

Baert, J. M., Janssen, C. R., Sabbe, K., & De Laender, F. (2016). Per capita interactions and stress tolerance drive stress-induced changes in biodiversity effects on ecosystem functions. Nature Communications, (7), [12486]. https://doi.org/10.1038/ncomms12486

Baert, Jan M. ; Janssen, Colin R. ; Sabbe, Koen ; De Laender, Frédérik. / Per capita interactions and stress tolerance drive stress-induced changes in biodiversity effects on ecosystem functions. Dans: Nature Communications. 2016 ; Numéro 7.

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

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.",

author = "Baert, {Jan M.} and Janssen, {Colin R.} and Koen Sabbe and {De Laender}, Fr{\'e}d{\'e}rik",

year = "2016",

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Baert, JM, Janssen, CR, Sabbe, K & De Laender, F 2016, 'Per capita interactions and stress tolerance drive stress-induced changes in biodiversity effects on ecosystem functions', Nature Communications, Numéro 7, 12486. https://doi.org/10.1038/ncomms12486

Per capita interactions and stress tolerance drive stress-induced changes in biodiversity effects on ecosystem functions. / Baert, Jan M.; Janssen, Colin R.; Sabbe, Koen; De Laender, Frédérik.

Dans: Nature Communications, Numéro 7, 12486, 18.08.2016.

Résultats de recherche: Contribution à un journal/une revue › Article

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T1 - Per capita interactions and stress tolerance drive stress-induced changes in biodiversity effects on ecosystem functions

AU - Baert, Jan M.

AU - Janssen, Colin R.

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AU - De Laender, Frédérik

PY - 2016/8/18

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N2 - 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.

AB - 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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Baert JM, Janssen CR, Sabbe K, De Laender F. Per capita interactions and stress tolerance drive stress-induced changes in biodiversity effects on ecosystem functions. Nature Communications. 2016 août 18;(7). 12486. https://doi.org/10.1038/ncomms12486