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

Jan Baert (UGent) , Colin Janssen (UGent) , Koen Sabbe (UGent) and Frederik De Laender (UGent)
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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.
Keywords
CURRENT KNOWLEDGE, BIOMASS PRODUCTION, ENVIRONMENTAL-STRESS, ECOLOGICAL COMMUNITIES, STATISTICAL INEVITABILITY, SPECIES RICHNESS, DIVERSITY, PRODUCTIVITY, STABILITY, PLANT-COMMUNITIES

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Please use this url to cite or link to this publication:

MLA
Baert, Jan, et al. “Per Capita Interactions and Stress Tolerance Drive Stress-Induced Changes in Biodiversity Effects on Ecosystem Functions.” NATURE COMMUNICATIONS, vol. 7, 2016, doi:10.1038/ncomms12486.
APA
Baert, J., Janssen, C., 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. https://doi.org/10.1038/ncomms12486
Chicago author-date
Baert, Jan, Colin Janssen, Koen Sabbe, and Frederik De Laender. 2016. “Per Capita Interactions and Stress Tolerance Drive Stress-Induced Changes in Biodiversity Effects on Ecosystem Functions.” NATURE COMMUNICATIONS 7. https://doi.org/10.1038/ncomms12486.
Chicago author-date (all authors)
Baert, Jan, Colin Janssen, Koen Sabbe, and Frederik De Laender. 2016. “Per Capita Interactions and Stress Tolerance Drive Stress-Induced Changes in Biodiversity Effects on Ecosystem Functions.” NATURE COMMUNICATIONS 7. doi:10.1038/ncomms12486.
Vancouver
1.
Baert J, Janssen C, Sabbe K, De Laender F. Per capita interactions and stress tolerance drive stress-induced changes in biodiversity effects on ecosystem functions. NATURE COMMUNICATIONS. 2016;7.
IEEE
[1]
J. Baert, C. Janssen, K. Sabbe, and F. De Laender, “Per capita interactions and stress tolerance drive stress-induced changes in biodiversity effects on ecosystem functions,” NATURE COMMUNICATIONS, vol. 7, 2016.
@article{8071433,
  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.}},
  articleno    = {{12486}},
  author       = {{Baert, Jan and Janssen, Colin and Sabbe, Koen and De Laender, Frederik}},
  issn         = {{2041-1723}},
  journal      = {{NATURE COMMUNICATIONS}},
  keywords     = {{CURRENT KNOWLEDGE,BIOMASS PRODUCTION,ENVIRONMENTAL-STRESS,ECOLOGICAL COMMUNITIES,STATISTICAL INEVITABILITY,SPECIES RICHNESS,DIVERSITY,PRODUCTIVITY,STABILITY,PLANT-COMMUNITIES}},
  language     = {{eng}},
  pages        = {{8}},
  title        = {{Per capita interactions and stress tolerance drive stress-induced changes in biodiversity effects on ecosystem functions}},
  url          = {{http://dx.doi.org/10.1038/ncomms12486}},
  volume       = {{7}},
  year         = {{2016}},
}

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