Stressor richness intensifies productivity loss but mitigates biodiversity loss

Abstract Ecosystems are subject to a multitude of anthropogenic environmental changes. Experimental research in the field of multiple stressors has typically involved varying the number of stressors, here termed stressor richness, but without controlling for total stressor intensity. Mistaking stres...

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المؤلفون الرئيسيون: Mark Holmes, Jurg Werner Spaak, Frederik De Laender
التنسيق: مقال
اللغة:English
منشور في: Wiley 2021-11-01
سلاسل:Ecology and Evolution
الموضوعات:
الوصول للمادة أونلاين:https://doi.org/10.1002/ece3.8182
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author Mark Holmes
Jurg Werner Spaak
Frederik De Laender
author_facet Mark Holmes
Jurg Werner Spaak
Frederik De Laender
author_sort Mark Holmes
collection DOAJ
description Abstract Ecosystems are subject to a multitude of anthropogenic environmental changes. Experimental research in the field of multiple stressors has typically involved varying the number of stressors, here termed stressor richness, but without controlling for total stressor intensity. Mistaking stressor intensity effects for stressor richness effects can misinform management decisions when there is a trade‐off between mitigating these two factors. We incorporate multiple stressors into three community models and show that, at a fixed total stressor intensity, increasing stressor richness aggravates joint stressor effects on ecosystem functioning, but reduces effects on species persistence and composition. In addition, stressor richness weakens the positive selection and negative complementarity effects on ecosystem function. We identify the among‐species variation of stressor effects on traits as a key determinant of the resulting community‐level stressor effects. Taken together, our results unravel the mechanisms linking multiple environmental changes to biodiversity and ecosystem function.
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spelling doaj.art-5d88dfd9949f420d981f078b6f81c8f02022-12-21T19:09:02ZengWileyEcology and Evolution2045-77582021-11-011121149771498710.1002/ece3.8182Stressor richness intensifies productivity loss but mitigates biodiversity lossMark Holmes0Jurg Werner Spaak1Frederik De Laender2Research Unit in Environmental and Evolutionary Biology, Namur Institute of Complex Systems, and the Institute of Life, Earth, and Environment University of Namur Namur BelgiumResearch Unit in Environmental and Evolutionary Biology, Namur Institute of Complex Systems, and the Institute of Life, Earth, and Environment University of Namur Namur BelgiumResearch Unit in Environmental and Evolutionary Biology, Namur Institute of Complex Systems, and the Institute of Life, Earth, and Environment University of Namur Namur BelgiumAbstract Ecosystems are subject to a multitude of anthropogenic environmental changes. Experimental research in the field of multiple stressors has typically involved varying the number of stressors, here termed stressor richness, but without controlling for total stressor intensity. Mistaking stressor intensity effects for stressor richness effects can misinform management decisions when there is a trade‐off between mitigating these two factors. We incorporate multiple stressors into three community models and show that, at a fixed total stressor intensity, increasing stressor richness aggravates joint stressor effects on ecosystem functioning, but reduces effects on species persistence and composition. In addition, stressor richness weakens the positive selection and negative complementarity effects on ecosystem function. We identify the among‐species variation of stressor effects on traits as a key determinant of the resulting community‐level stressor effects. Taken together, our results unravel the mechanisms linking multiple environmental changes to biodiversity and ecosystem function.https://doi.org/10.1002/ece3.8182community ecologyecosystemsmultiple stressorstheoretical ecologytraits
spellingShingle Mark Holmes
Jurg Werner Spaak
Frederik De Laender
Stressor richness intensifies productivity loss but mitigates biodiversity loss
Ecology and Evolution
community ecology
ecosystems
multiple stressors
theoretical ecology
traits
title Stressor richness intensifies productivity loss but mitigates biodiversity loss
title_full Stressor richness intensifies productivity loss but mitigates biodiversity loss
title_fullStr Stressor richness intensifies productivity loss but mitigates biodiversity loss
title_full_unstemmed Stressor richness intensifies productivity loss but mitigates biodiversity loss
title_short Stressor richness intensifies productivity loss but mitigates biodiversity loss
title_sort stressor richness intensifies productivity loss but mitigates biodiversity loss
topic community ecology
ecosystems
multiple stressors
theoretical ecology
traits
url https://doi.org/10.1002/ece3.8182
work_keys_str_mv AT markholmes stressorrichnessintensifiesproductivitylossbutmitigatesbiodiversityloss
AT jurgwernerspaak stressorrichnessintensifiesproductivitylossbutmitigatesbiodiversityloss
AT frederikdelaender stressorrichnessintensifiesproductivitylossbutmitigatesbiodiversityloss