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      Extinction Rates of North American Freshwater Fauna

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      Conservation Biology
      Wiley-Blackwell

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          EXTINCTION VULNERABILITY AND SELECTIVITY:Combining Ecological and Paleontological Views

          Extinction is rarely random across ecological and geological time scales. Traits that make some species more extinction-prone include individual traits, such as body size, and abundance. Substantial consistency appears across ecological and geological time scales in such traits. Evolutionary branching produces phylogenetic (as often measured by taxonomic) nesting of extinction-biasing traits at many scales. An example is the tendency, seen in both fossil and modern data, for higher taxa living in marine habitats to have generally lower species extinction rates. At lower taxononomic levels, recent bird and mammal extinctions are concentrated in certain genera and families. A fundamental result of such selectivity is that it can accelerate net loss of biodiversity compared to random loss of species among taxa. Replacement of vulnerable taxa by rapidly spreading taxa that thrive in human-altered environments will ultimately produce a spatially more homogenized biosphere with much lower net diversity.
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            Threats to Imperiled Freshwater Fauna. Amenazas a la Fauna Dulceacuicola en Riesgo

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              Freshwater Bivalve Extinctions (Mollusca: Unionoida): A Search for Causes

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                Author and article information

                Journal
                Conservation Biology
                Conservation Biology
                Wiley-Blackwell
                0888-8892
                1523-1739
                October 23 1999
                October 23 1999
                : 13
                : 5
                : 1220-1222
                Article
                10.1046/j.1523-1739.1999.98380.x
                1c43f7ee-de61-4a2e-8475-a38dd233f050
                © 1999

                http://doi.wiley.com/10.1002/tdm_license_1.1

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