Vellend2005a

Référence

Vellend, M. (2005) Species diversity and genetic diversity: Parallel processes and correlated patterns. American Naturalist, 166(2):199-215. (Scopus )

Résumé

Species diversity and genetic diversity maybe correlated as a result of processes acting in parallel at the two levels. However, no theories predict the conditions under which different relationships between species diversity and genetic diversity might arise and therefore when one level of diversity may be predicted using the other. I used simulation models to investigate the parallel influence of locality area, immigration rate, and environmental heterogeneity on species diversity and genetic diversity. The most common pattern was moderate to strong positive species-genetic diversity correlations (SGDCs). Such correlations may be driven by any one of the three locality characteristics examined, but important exceptions and patterns emerged. Genetic diversity and species diversity were more weakly correlated when genetic diversity was measured for rare versus common species. Environmental heterogeneity not only imposes spatially varying selection on populations and communities but also causes changes in species' population sizes and therefore genetic diversity; these interacting processes can create positive, negative, or unimodal relationships of genetic diversity with species diversity. When species are considered as part of multispecies communities, predictions from single-species models of genetic diversity apply in some instances (effects of area and immigration) but often not in others (effects of environmental heterogeneity). © 2005 by The University of Chicago.

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@ARTICLE { Vellend2005a,
    AUTHOR = { Vellend, M. },
    TITLE = { Species diversity and genetic diversity: Parallel processes and correlated patterns },
    JOURNAL = { American Naturalist },
    YEAR = { 2005 },
    VOLUME = { 166 },
    PAGES = { 199-215 },
    NUMBER = { 2 },
    ABSTRACT = { Species diversity and genetic diversity maybe correlated as a result of processes acting in parallel at the two levels. However, no theories predict the conditions under which different relationships between species diversity and genetic diversity might arise and therefore when one level of diversity may be predicted using the other. I used simulation models to investigate the parallel influence of locality area, immigration rate, and environmental heterogeneity on species diversity and genetic diversity. The most common pattern was moderate to strong positive species-genetic diversity correlations (SGDCs). Such correlations may be driven by any one of the three locality characteristics examined, but important exceptions and patterns emerged. Genetic diversity and species diversity were more weakly correlated when genetic diversity was measured for rare versus common species. Environmental heterogeneity not only imposes spatially varying selection on populations and communities but also causes changes in species' population sizes and therefore genetic diversity; these interacting processes can create positive, negative, or unimodal relationships of genetic diversity with species diversity. When species are considered as part of multispecies communities, predictions from single-species models of genetic diversity apply in some instances (effects of area and immigration) but often not in others (effects of environmental heterogeneity). © 2005 by The University of Chicago. },
    COMMENT = { Cited By (since 1996): 38 Export Date: 11 March 2011 Source: Scopus CODEN: AMNTA doi: 10.1086/431318 },
    ISSN = { 00030147 (ISSN) },
    KEYWORDS = { Area, Environmental heterogeneity, Immigration, Neutral theory, Selection, genetic variation, species diversity, article, biodiversity, ecology, genetic variability, genotype, plant, population dynamics, population genetics, theoretical model, Biodiversity, Ecology, Genetics, Population, Genotype, Models, Theoretical, Plants, Population Dynamics, Variation (Genetics) },
    OWNER = { Luc },
    TIMESTAMP = { 2011.03.11 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-20744458452&partnerID=40&md5=30cea8acd9d49b39d5c5ee6c1223442e },
}

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