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Impacts of multiple stressors on biodiversity and ecosystem functioning: the role of species co‐tolerance

Impacts of multiple stressors on biodiversity and ecosystem functioning: the role of species... Ecosystem resistance to a single stressor relies on tolerant species that can compensate for sensitive competitors and maintain ecosystem processes, such as primary production. We hypothesize that resistance to additional stressors depends increasingly on species tolerances being positively correlated (i.e. positive species co‐tolerance). Initial exposure to a stressor combined with positive species co‐tolerance should reduce the impacts of other stressors, which we term stress‐induced community tolerance. In contrast, negative species co‐tolerance is expected to result in additional stressors having pronounced additive or synergistic impacts on biologically impoverished functional groups, which we term stress‐induced community sensitivity. Therefore, the sign and strength of the correlation between species sensitivities to multiple stressors must be considered when predicting the impacts of global change on ecosystem functioning as mediated by changes in biodiversity. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Oikos Wiley

Impacts of multiple stressors on biodiversity and ecosystem functioning: the role of species co‐tolerance

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References (62)

Publisher
Wiley
Copyright
Copyright © 2004 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0030-1299
eISSN
1600-0706
DOI
10.1111/j.0030-1299.2004.13255.x
Publisher site
See Article on Publisher Site

Abstract

Ecosystem resistance to a single stressor relies on tolerant species that can compensate for sensitive competitors and maintain ecosystem processes, such as primary production. We hypothesize that resistance to additional stressors depends increasingly on species tolerances being positively correlated (i.e. positive species co‐tolerance). Initial exposure to a stressor combined with positive species co‐tolerance should reduce the impacts of other stressors, which we term stress‐induced community tolerance. In contrast, negative species co‐tolerance is expected to result in additional stressors having pronounced additive or synergistic impacts on biologically impoverished functional groups, which we term stress‐induced community sensitivity. Therefore, the sign and strength of the correlation between species sensitivities to multiple stressors must be considered when predicting the impacts of global change on ecosystem functioning as mediated by changes in biodiversity.

Journal

Oikos – Wiley

Published: Mar 1, 2004

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