MorrisDupuch2012

Référence

Morris, D.W. and Dupuch, A. (2012) Habitat change and the scale of habitat selection: Shifting gradients used by coexisting Arctic rodents. Oikos, 121(6):975-984. (Scopus )

Résumé

The conservation and understanding of biodiversity requires development and testing of models that illustrate how climate change and other anthropogenic effects alter habitat and its selection at different spatial scales. Models of fitness along a habitat gradient illustrate the connection between fine-scale variation in fitness and the selection of habitat as discontinuous patches in the landscape. According to these models, climate change can increase fitness values of static habitats, shift the fitness value of habitat patches along underlying gradients of habitat quality, or alter both fitness and habitat quality. It should be possible to differentiate amongst these scenarios by associating differences in the abundance and distribution of species with metrics of habitat that document the gradient while controlling for changes in density at larger scales of analysis. Comparisons of habitat selection by two species of lemmings, over an interval of 15 years, are consistent with the theory. The pattern of habitat selection at the scale of wet versus dry tundra habitats changed through time. The change in habitat selection was reflected by different, but nevertheless density-dependent, patterns of association with the structure and composition of habitat. Abundant collared lemmings abandoned stations where altered habitat characteristics caused a shift to new locations along the wet-to-dry gradient. The confirmation of scale-dependent theory provides new insights into how one might begin to forecast future habitat selection under different scenarios of climate and habitat change. © 2012 The Authors. Oikos © 2012 Nordic Society Oikos.

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@ARTICLE { MorrisDupuch2012,
    AUTHOR = { Morris, D.W. and Dupuch, A. },
    TITLE = { Habitat change and the scale of habitat selection: Shifting gradients used by coexisting Arctic rodents },
    JOURNAL = { Oikos },
    YEAR = { 2012 },
    VOLUME = { 121 },
    PAGES = { 975-984 },
    NUMBER = { 6 },
    NOTE = { cited By (since 1996)5 },
    ABSTRACT = { The conservation and understanding of biodiversity requires development and testing of models that illustrate how climate change and other anthropogenic effects alter habitat and its selection at different spatial scales. Models of fitness along a habitat gradient illustrate the connection between fine-scale variation in fitness and the selection of habitat as discontinuous patches in the landscape. According to these models, climate change can increase fitness values of static habitats, shift the fitness value of habitat patches along underlying gradients of habitat quality, or alter both fitness and habitat quality. It should be possible to differentiate amongst these scenarios by associating differences in the abundance and distribution of species with metrics of habitat that document the gradient while controlling for changes in density at larger scales of analysis. Comparisons of habitat selection by two species of lemmings, over an interval of 15 years, are consistent with the theory. The pattern of habitat selection at the scale of wet versus dry tundra habitats changed through time. The change in habitat selection was reflected by different, but nevertheless density-dependent, patterns of association with the structure and composition of habitat. Abundant collared lemmings abandoned stations where altered habitat characteristics caused a shift to new locations along the wet-to-dry gradient. The confirmation of scale-dependent theory provides new insights into how one might begin to forecast future habitat selection under different scenarios of climate and habitat change. © 2012 The Authors. Oikos © 2012 Nordic Society Oikos. },
    CODEN = { OIKSA },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1111/j.1600-0706.2011.20492.x },
    ISSN = { 00301299 },
    KEYWORDS = { abundance; anthropogenic effect; biodiversity; climate change; coexistence; conservation management; ecological modeling; fitness; habitat conservation; habitat quality; habitat selection; habitat type; population distribution; rodent, Arctic, Dicrostonyx; Rodentia },
    SOURCE = { Scopus },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84861482092&partnerID=40&md5=6130efc659260e76ae0e776b553c2ae5 },
}

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