Abstract:
:Global conservation strategies commonly assume that different taxonomic groups show congruent geographical patterns of diversity, and that the distribution of extinction-prone species in one group can therefore act as a surrogate for vulnerable species in other groups when conservation decisions are being made. The validity of these assumptions remains unclear, however, because previous tests have been limited in both geographical and taxonomic extent. Here we use a database on the global distribution of 19,349 living bird, mammal and amphibian species to show that, although the distribution of overall species richness is very similar among these groups, congruence in the distribution of rare and threatened species is markedly lower. Congruence is especially low among the very rarest species. Cross-taxon congruence is also highly scale dependent, being particularly low at the finer spatial resolutions relevant to real protected areas. 'Hotspots' of rarity and threat are therefore largely non-overlapping across groups, as are areas chosen to maximize species complementarity. Overall, our results indicate that 'silver-bullet' conservation strategies alone will not deliver efficient conservation solutions. Instead, priority areas for biodiversity conservation must be based on high-resolution data from multiple taxa.
journal_name
Naturejournal_title
Natureauthors
Grenyer R,Orme CD,Jackson SF,Thomas GH,Davies RG,Davies TJ,Jones KE,Olson VA,Ridgely RS,Rasmussen PC,Ding TS,Bennett PM,Blackburn TM,Gaston KJ,Gittleman JL,Owens IPdoi
10.1038/nature05237subject
Has Abstractpub_date
2006-11-02 00:00:00pages
93-6issue
7115eissn
0028-0836issn
1476-4687pii
nature05237journal_volume
444pub_type
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