MouquetGravelMassolEtAl2013

Référence

Mouquet, N., Gravel, D., Massol, F., Calcagno, V. (2013) Extending the concept of keystone species to communities and ecosystems. Ecology Letters, 16(1):1-8. (Scopus )

Résumé

Keystone species are defined as having disproportionate importance in their community. This concept has proved useful and is now often used in conservation ecology. Here, we introduce the concept of keystone communities (and ecosystems) within metacommunities (and metaecosystems). We define keystone and burden communities as communities with impacts disproportionately large (positive or negative respectively) relative to their weight in the metacommunity. We show how a simple metric, based on the effects of single-community removals, can characterise communities along a 'keystoneness' axis. We illustrate the usefulness of this approach with examples from two different theoretical models. We further distinguish environmental heterogeneity from species trait heterogeneity as determinants of keystoneness. We suggest that the concept of keystone communities/ecosystems will be highly beneficial, not only as a fundamental step towards understanding species interactions in a spatial context, but also as a tool for the management of disturbed landscapes. © 2012 Blackwell Publishing Ltd/CNRS.

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@ARTICLE { MouquetGravelMassolEtAl2013,
    AUTHOR = { Mouquet, N. and Gravel, D. and Massol, F. and Calcagno, V. },
    TITLE = { Extending the concept of keystone species to communities and ecosystems },
    JOURNAL = { Ecology Letters },
    YEAR = { 2013 },
    VOLUME = { 16 },
    PAGES = { 1-8 },
    NUMBER = { 1 },
    NOTE = { cited By 14 },
    ABSTRACT = { Keystone species are defined as having disproportionate importance in their community. This concept has proved useful and is now often used in conservation ecology. Here, we introduce the concept of keystone communities (and ecosystems) within metacommunities (and metaecosystems). We define keystone and burden communities as communities with impacts disproportionately large (positive or negative respectively) relative to their weight in the metacommunity. We show how a simple metric, based on the effects of single-community removals, can characterise communities along a 'keystoneness' axis. We illustrate the usefulness of this approach with examples from two different theoretical models. We further distinguish environmental heterogeneity from species trait heterogeneity as determinants of keystoneness. We suggest that the concept of keystone communities/ecosystems will be highly beneficial, not only as a fundamental step towards understanding species interactions in a spatial context, but also as a tool for the management of disturbed landscapes. © 2012 Blackwell Publishing Ltd/CNRS. },
    AUTHOR_KEYWORDS = { Burden; Dispersal; Habitat destruction; Keystone; Metacommunity; Metaecosystem; Patch dynamics; Source-sink },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1111/ele.12014 },
    KEYWORDS = { dispersal; ecological theory; environmental management; habitat loss; heterogeneity; keystone species; meta-analysis; metapopulation; patch dynamics; source-sink dynamics; species conservation, article; biological model; ecosystem; environmental protection; Monte Carlo method, Conservation of Natural Resources; Ecosystem; Models, Biological; Monte Carlo Method },
    SOURCE = { Scopus },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84870884584&partnerID=40&md5=3f69606c27ab69a30b441c606ae89a69 },
}

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