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    Ecological niche shifts and environmental space anisotropy: a cautionary note

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    REVMEXBIOSoberon.pdf (1013.Kb)
    Issue Date
    2011
    Author
    Soberón, Jorge
    Peterson, A. Townsend
    Publisher
    Instituto de Biología
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
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    Abstract
    The anisotropic structure of climatic space may cause significant (and to a large extent unappreciated) nonevolutionary niche shifts. This can be seen mostly in the context of spatial transferability of ecological niche models. We explore this effect using a virtual species in the United States. We created a simple virtual species by postulating its fundamental niche as an ellipse in a two-dimensional realistic climatic space. The climatic combinations defined by the ellipse were projected in the geography of the United States and 2 regions of equal area were selected. The structure of niche in the 2 areas is compared. It is shown that the 2 regions have differently positioned subsets of the environmental space, which creates “shifts” in the realized niches despite the fact that no evolution and no biotic interactions are present. The most parsimonious hypothesis when ecological niche modeling reveals shifts in the realized niche is that environmental space is heterogeneous. Without considering differences in the structure of environmental space no speculation about niche evolution or the role of competitors should be attempted.
    Description
    This is the publisher's version, which the author has permission to share. The original version may be found at the following link: http://www.scielo.org.mxscielo.php?script=sci_home&lng=es&nrm=iso
    URI
    http://hdl.handle.net/1808/13672
    Collections
    • Center for Latin American and Caribbean Studies Scholarly Works [738]
    • Distinguished Professors Scholarly Works [918]
    • Ecology & Evolutionary Biology Scholarly Works [1516]
    Citation
    Soberón, J. and Peterson, T. 2011. Ecological niche and environmental space anisotropy: a cautionary note. Revista Mexicana de Biodiversidad 82: 1348-1355.

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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