Undermining the foundation: a brief overview of the effects of a widespread invader on coastal ecosystem engineers

By creating habitats or influencing the immediate physical environment, ecosystem engineers shape the diversity, function and services provided by ecosystems. Thus, the disruption of these species is relevant given their broad influence on native communities and ecosystems. As such, we review the ef...

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Main Authors: William G. Bissett, Patricia A. Ramey-Balci, Pedro A. Quijón
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-06-01
Series:Frontiers in Marine Science
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fmars.2025.1614368/full
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author William G. Bissett
Patricia A. Ramey-Balci
Pedro A. Quijón
author_facet William G. Bissett
Patricia A. Ramey-Balci
Pedro A. Quijón
author_sort William G. Bissett
collection DOAJ
description By creating habitats or influencing the immediate physical environment, ecosystem engineers shape the diversity, function and services provided by ecosystems. Thus, the disruption of these species is relevant given their broad influence on native communities and ecosystems. As such, we review the effects (positive, negative, or neutral) of a widespread invasive species, the European green crab (Carcinus maenas) on key coastal ecosystem engineers. We examined the literature and focused on 53 published studies to assess reported impacts on well-known macrophytes, mussels, oysters and clams. Despite the wide range of response variables measured and reported, green crab effects were overwhelmingly negative. These effects were mediated by direct (through consumption and sediment burrowing) or indirect mechanisms (through seed consumption, alteration of habitat quality or effects on related species), and were often context dependent. These conclusions are limited by ongoing green crab expansions where possible impacts have not been yet documented, and by cases of neutral or minor impacts that remain unpublished. Green crab effects often result in disruption rather than the loss of local ecosystem engineers, but they clearly add to the ongoing effects of other global stressors.
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spelling doaj-art-4cd0578db1d34d15b0b48cedaa950b492025-08-20T03:07:17ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452025-06-011210.3389/fmars.2025.16143681614368Undermining the foundation: a brief overview of the effects of a widespread invader on coastal ecosystem engineersWilliam G. Bissett0Patricia A. Ramey-Balci1Pedro A. Quijón2Coastal Ecology Laboratory, Department of Biology, University of Prince Edward Island, Charlottetown, PE, CanadaDepartment of Biological Sciences, University of Manitoba, Winnipeg, MN, CanadaCoastal Ecology Laboratory, Department of Biology, University of Prince Edward Island, Charlottetown, PE, CanadaBy creating habitats or influencing the immediate physical environment, ecosystem engineers shape the diversity, function and services provided by ecosystems. Thus, the disruption of these species is relevant given their broad influence on native communities and ecosystems. As such, we review the effects (positive, negative, or neutral) of a widespread invasive species, the European green crab (Carcinus maenas) on key coastal ecosystem engineers. We examined the literature and focused on 53 published studies to assess reported impacts on well-known macrophytes, mussels, oysters and clams. Despite the wide range of response variables measured and reported, green crab effects were overwhelmingly negative. These effects were mediated by direct (through consumption and sediment burrowing) or indirect mechanisms (through seed consumption, alteration of habitat quality or effects on related species), and were often context dependent. These conclusions are limited by ongoing green crab expansions where possible impacts have not been yet documented, and by cases of neutral or minor impacts that remain unpublished. Green crab effects often result in disruption rather than the loss of local ecosystem engineers, but they clearly add to the ongoing effects of other global stressors.https://www.frontiersin.org/articles/10.3389/fmars.2025.1614368/fullecosystem engineerinvaderhabitat-modifiermacrophytesbivalves
spellingShingle William G. Bissett
Patricia A. Ramey-Balci
Pedro A. Quijón
Undermining the foundation: a brief overview of the effects of a widespread invader on coastal ecosystem engineers
Frontiers in Marine Science
ecosystem engineer
invader
habitat-modifier
macrophytes
bivalves
title Undermining the foundation: a brief overview of the effects of a widespread invader on coastal ecosystem engineers
title_full Undermining the foundation: a brief overview of the effects of a widespread invader on coastal ecosystem engineers
title_fullStr Undermining the foundation: a brief overview of the effects of a widespread invader on coastal ecosystem engineers
title_full_unstemmed Undermining the foundation: a brief overview of the effects of a widespread invader on coastal ecosystem engineers
title_short Undermining the foundation: a brief overview of the effects of a widespread invader on coastal ecosystem engineers
title_sort undermining the foundation a brief overview of the effects of a widespread invader on coastal ecosystem engineers
topic ecosystem engineer
invader
habitat-modifier
macrophytes
bivalves
url https://www.frontiersin.org/articles/10.3389/fmars.2025.1614368/full
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AT pedroaquijon underminingthefoundationabriefoverviewoftheeffectsofawidespreadinvaderoncoastalecosystemengineers