Projets par an
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 |
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Numéro d'article | 12486 |
journal | Nature Communications |
Numéro de publication | 7 |
Les DOIs | |
Etat de la publication | Publié - 18 août 2016 |
Empreinte digitale
Examiner les sujets de recherche de « Per capita interactions and stress tolerance drive stress-induced changes in biodiversity effects on ecosystem functions ». Ensemble, ils forment une empreinte digitale unique.Projets
- 2 Terminé
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Biodiversity, ecosystem functioning and environmental stress
1/01/14 → 31/12/16
Projet: Axe de recherche
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Marine ecosystem productivity in a gradient of toxic stress
De Laender, F., Baert, J. M., Janssen, C. & Sabbe, K.
1/10/12 → 30/09/16
Projet: Projet de thèse
Activités
- 2 Discours invité
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Biodiversity, chemicals, and ecosystem functioning. Colloquium of the Institute for Environmental Sciences
Frédérik De Laender (Orateur invité)
5 févr. 2015Activité: Discours ou présentation › Discours invité
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Biodiversity, chemicals and ecosystem functioning
Frédérik De Laender (Orateur invité)
5 févr. 2014Activité: Discours ou présentation › Discours invité