Nonrandom extinction and the loss of evolutionary history.

Purvis, A; Agapow, P M; Gittleman, J L; Mace, G M

Purvis, A; Agapow, P M; Gittleman, J L; Mace, G M.

Afiliación

Purvis A; Department of Biology, Imperial College, Silwood Park, Ascot SL5 7PY, UK. a.purvis@ic.ac.uk

Science ; 288(5464): 328-30, 2000 Apr 14.

Article en En | MEDLINE | ID: mdl-10764644

RESUMEN

The hierarchical nature of phylogenies means that random extinction of species affects a smaller fraction of higher taxa, and so the total amount of evolutionary history lost may be comparatively slight. However, current extinction risk is not phylogenetically random. We show the potentially severe implications of the clumped nature of threat for the loss of biodiversity. An additional 120 avian and mammalian genera are at risk compared with the number predicted under random extinction. We estimate that the prospective extra loss of mammalian evolutionary history alone would be equivalent to losing a monotypic phylum.

Asunto(s)

Evolución Biológica; Aves; Ecosistema; Mamíferos; Animales; Carnívoros; Simulación por Computador; Conservación de los Recursos Naturales; Humanos; Filogenia; Primates; Riesgo

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Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Aves / Ecosistema / Evolución Biológica / Mamíferos Tipo de estudio: Etiology_studies / Prognostic_studies / Risk_factors_studies Límite: Animals / Humans Idioma: En Revista: Science Año: 2000 Tipo del documento: Article Pais de publicación: Estados Unidos

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