Global distribution and conservation of rare and threatened vertebrates
Global distribution and conservation of rare and threatened vertebrates
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DOI：
10.1038/nature05237
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发表时间：
2006-11-02
期刊：
影响因子：
64.8
通讯作者：
Owens, Ian P. F.
中科院分区：
文献类型：
--
作者：
Grenyer, Richard;Orme, C. David L.;Owens, Ian P. F.
全球保护战略通常假设不同的分类群体表现出一致的地理多样性模式，因此，在做出保护决策时，一个群体中易受保护物种的分布可以作为其他群体中易受伤害物种的替代品（1-4）。然而，这些假设的有效性仍然不清楚，因为以前的测试在地理和分类范围上都很有限（5-12）。在这里，我们使用了一个关于19，349种现存鸟类，哺乳动物和两栖动物物种的全球分布数据库，表明尽管这些群体之间的总体物种丰富度分布非常相似，但稀有和受威胁物种的分布一致性明显较低。在非常稀有的物种中，一致性特别低。跨类群一致性也是高度规模依赖，特别是在更精细的空间分辨率相关的真实的保护区低。因此，稀有性和威胁性的“热点”在种群之间基本上不重叠，为最大限度地发挥物种互补性而选择的区域也是如此。总的来说，我们的研究结果表明，“银弹”保护策略本身不会提供有效的保护解决方案。相反，生物多样性保护的优先领域必须基于来自多个分类群的高分辨率数据。
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(1-4). The validity of these assumptions remains unclear, however, because previous tests have been limited in both geographical and taxonomic extent(5-12). 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.