Premium
Un Sistema Métrico para Analizar los Patrones Taxonómicos de Riesgo de Extinción
Author(s) -
Lockwood Julie L.,
Russell Gareth J.,
Gittleman John L.,
Daehler Curtis C.,
McKinney Michael L.,
Purvis Andy
Publication year - 2002
Publication title -
conservation biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.2
H-Index - 222
eISSN - 1523-1739
pISSN - 0888-8892
DOI - 10.1046/j.1523-1739.2002.01152.x
Subject(s) - taxonomic rank , extinction (optical mineralogy) , cluster analysis , genus , geography , biology , ecology , taxon , statistics , mathematics , paleontology
Spatial autocorrelation statistics can provide an efficient tool for exploring taxonomic patterns in extinction risk. Using Moran's I , we found that U.S. vertebrates exhibit little or no taxonomic clustering of extinction threat within orders, but much greater clustering within families and genera. Among amphibians, clustering was unusually high within families. Across classes, most groups had a similar degree of clustering at all taxonomic levels, despite their different evolutionary histories. Birds were the exception, with higher clustering at the genus and family level. Our results suggest that intrinsic traits play a large role in species endangerment. The taxonomic pattern produced can guide policymakers in their allocation of scarce conservation dollars and in their efforts to develop pre‐emptive conservation programs.