Community regulation models as a framework for direct and indirect effects of climate change on species distributions

Abstract Existing projections of climate change impacts focus primarily on direct abiotic impacts on individuals and populations. However, these models often ignore species interactions, which are vital for determining community composition and structure. To evaluate both direct and indirect effects...

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Main Authors: Piper D. Wallingford, Cascade J. B. Sorte
Format: Article
Language:English
Published: Wiley 2019-07-01
Series:Ecosphere
Subjects:
Online Access:https://doi.org/10.1002/ecs2.2790
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author Piper D. Wallingford
Cascade J. B. Sorte
author_facet Piper D. Wallingford
Cascade J. B. Sorte
author_sort Piper D. Wallingford
collection DOAJ
description Abstract Existing projections of climate change impacts focus primarily on direct abiotic impacts on individuals and populations. However, these models often ignore species interactions, which are vital for determining community composition and structure. To evaluate both direct and indirect effects of climate change on species distributions, we applied the Menge–Sutherland model, which describes the relative role of predation and environmental stress in regulating community structure. Using a space‐for‐time approach, we tested the predictions that (1) predators are more strongly impacted by increasing environmental stress than prey (as described in the Menge–Sutherland model) and (2) incorporating indirect (predator) effects increases our ability to predict impacts of increased temperature on prey distributions. We surveyed vertical distributions of predators (sea stars) and a foundational prey species (mussels) at 20 intertidal sites spanning a thermal gradient along the West Coast of the United States. Using generalized linear models and structural equation models, we found that as temperature increased, the upper limits of foundational prey species decreased (a direct effect), while prey lower limits also shifted downward, due to an indirect effect of temperature on predator distributions. Under future climate change, mussel ranges may undergo vertical shifts toward subtidal habitats, allowing for localized persistence of mussels and associated species. Our model comparisons indicate that this framework—incorporating both direct and indirect environmental stress effects within a classic community regulation model—can improve prediction of responses to warming. Community regulation models could be expanded to inform management and conservation efforts during unprecedented climate and ecological change.
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spelling doaj.art-17aee8b51af249c1a50df6136d471e422022-12-21T19:03:22ZengWileyEcosphere2150-89252019-07-01107n/an/a10.1002/ecs2.2790Community regulation models as a framework for direct and indirect effects of climate change on species distributionsPiper D. Wallingford0Cascade J. B. Sorte1Department of Ecology and Evolutionary Biology University of California Irvine California USADepartment of Ecology and Evolutionary Biology University of California Irvine California USAAbstract Existing projections of climate change impacts focus primarily on direct abiotic impacts on individuals and populations. However, these models often ignore species interactions, which are vital for determining community composition and structure. To evaluate both direct and indirect effects of climate change on species distributions, we applied the Menge–Sutherland model, which describes the relative role of predation and environmental stress in regulating community structure. Using a space‐for‐time approach, we tested the predictions that (1) predators are more strongly impacted by increasing environmental stress than prey (as described in the Menge–Sutherland model) and (2) incorporating indirect (predator) effects increases our ability to predict impacts of increased temperature on prey distributions. We surveyed vertical distributions of predators (sea stars) and a foundational prey species (mussels) at 20 intertidal sites spanning a thermal gradient along the West Coast of the United States. Using generalized linear models and structural equation models, we found that as temperature increased, the upper limits of foundational prey species decreased (a direct effect), while prey lower limits also shifted downward, due to an indirect effect of temperature on predator distributions. Under future climate change, mussel ranges may undergo vertical shifts toward subtidal habitats, allowing for localized persistence of mussels and associated species. Our model comparisons indicate that this framework—incorporating both direct and indirect environmental stress effects within a classic community regulation model—can improve prediction of responses to warming. Community regulation models could be expanded to inform management and conservation efforts during unprecedented climate and ecological change.https://doi.org/10.1002/ecs2.2790climate changecommunity regulationindirect effectspredator–preyrocky intertidalspecies interactions
spellingShingle Piper D. Wallingford
Cascade J. B. Sorte
Community regulation models as a framework for direct and indirect effects of climate change on species distributions
Ecosphere
climate change
community regulation
indirect effects
predator–prey
rocky intertidal
species interactions
title Community regulation models as a framework for direct and indirect effects of climate change on species distributions
title_full Community regulation models as a framework for direct and indirect effects of climate change on species distributions
title_fullStr Community regulation models as a framework for direct and indirect effects of climate change on species distributions
title_full_unstemmed Community regulation models as a framework for direct and indirect effects of climate change on species distributions
title_short Community regulation models as a framework for direct and indirect effects of climate change on species distributions
title_sort community regulation models as a framework for direct and indirect effects of climate change on species distributions
topic climate change
community regulation
indirect effects
predator–prey
rocky intertidal
species interactions
url https://doi.org/10.1002/ecs2.2790
work_keys_str_mv AT piperdwallingford communityregulationmodelsasaframeworkfordirectandindirecteffectsofclimatechangeonspeciesdistributions
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