Does taxonomic diversity in indicator groups influence their effectiveness in identifying priority areas for species conservation?
Does taxonomic diversity in indicator groups influence their effectiveness in identifying priority areas for species conservation?
复制标题
DOI：
10.1111/j.1469-1795.2008.00211.x
复制
发表时间：
2008-12-01
影响因子：
3.4
通讯作者：
Rahbek, C.
中科院分区：
文献类型：
--
作者：
Bladt, J.;Larsen, F. W.;Rahbek, C.
确定生物多样性保护的优先领域是系统保护规划的基石。然而，由于自然系统固有的复杂性，生物多样性甚至所有物种的分布都无法直接量化。物种指标组可作为确定优先保护区的重要工具。然而，目前尚不清楚哪些因素使某些指标组比其他指标组表现更好。在这项研究中，使用数据的847种植物，脊椎动物和昆虫在丹麦的分布，我们评估了物种指标组的分类多样性是否影响其有效性，在确定物种保护的优先领域。我们测试了包括较高分类多样性的指标组（即由来自许多不同分类组的物种组成的指标组）是否比包括较低分类多样性的指标组表现更好。指标组的业绩是根据目标组进行评价的，这些目标组在物种组成方面独立于指标组。总的来说，我们发现，使用分类多样性指标组并没有一贯增加目标物种的覆盖率比使用分类多样性指标组少。然而，从一个分类群中单独选择的指标组优于分类学上不同的组。其次，我们发现，分类多样性的指标并没有影响分类多样性的目标种（在代表科，目，等方面的数量）。因此，分类多样性本身对指标组的绩效影响甚微。分布特征，如大小范围窄的物种比例，对指标性能的影响较大。我们的研究结果表明，它可能是次要的重要性，以考虑分类多样性时，获取物种数据，为未来的保护项目使用指标组。
The identification of priority areas for biodiversity conservation is a cornerstone of systematic conservation planning. However, biodiversity, or even the distribution of all species, cannot be directly quantified, due to the inherent complexity of natural systems. Species indicator groups may serve as important tools for the identification of priority areas for conservation. Yet, it is unclear which factors make certain indicator groups perform better than others. In this study, using data on the Danish distribution of 847 species of plants, vertebrates and insects, we assessed whether the taxonomic diversity in species indicator groups influence their effectiveness in the identification of priority areas for species conservation. We tested whether indicator groups comprising a higher taxonomic diversity (i.e. indicator groups consisting of species from many different taxonomic groups) perform better than indicator groups comprising a lower taxonomic diversity. The performance of the indicator groups was evaluated on target groups, which, in terms of species composition, were independent of the indicator groups. Overall, we found that using taxonomically diverse indicator groups did not consistently increase the coverage of target species than when using less taxonomically diverse indicator groups. However, indicator groups chosen solely from one taxon were outperformed by taxonomically diverse groups. Second, we found that taxonomic diversity of the indicator did not influence the taxonomic diversity of the covered target species (in terms of number of represented families, orders, etc.) Thus, taxonomic diversity per se only had a marginal influence on the performance of indicator groups. Distributional characteristics, such as the proportion of species with narrow range sizes, had a larger impact on indicator performance. Our results suggest that it might be of minor importance to consider taxonomic diversity when acquiring species data for future conservation projects using indicator groups.