Indicator taxa of spider (Araneae) diversity and their efficiency in conservation
Indicator taxa of spider (Araneae) diversity and their efficiency in conservation
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DOI：
10.1016/j.biocon.2004.03.024
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发表时间：
2004-12-01
影响因子：
5.9
通讯作者：
Serrano, ARM
中科院分区：
文献类型：
--
作者：
Cardoso, P;Silva, I;Serrano, ARM
在过去的几年中，已经提出了相当多的替代方法来预测一个给定的分类单元的物种丰富度，同时保留所观察到的个人的身份信息。这些信息可以是非常有用的保护优先领域的选择，无论是通过使用原始的丰富度值，或优先考虑潜在的网站之间的互补性。其中最流行的方法是使用指标类群。一个单一的家庭和一组的几个家庭在这里测试的能力，以预测蜘蛛（蜘蛛目）物种的数量独立的采样工作，地理位置和栖息地的类型。我们使用来自三个葡萄牙保护区的数据作为测试案例。一个两个家庭的指标组-平腹蛛科和球蛛科-被认为是一个很好的替代物种丰富度，即使谨慎是必要的比较网站有很大的不同采样工作或植被覆盖。没有一个单一的家庭可以被视为蜘蛛总数的良好替代品。此外，只有一组的两个提到的家庭被发现是有效的和可靠的，无论是用于排名网站根据类群丰富度或确定近最小集的网站保护。因此，我们建议代孕这个指标组作为一个有前途的方法，蜘蛛物种丰富度的预测或评估和排名的地区，根据其保护的重要性。葡萄牙和整个地中海区域都应支持所达成的结论。(C)2004 Elsevier Ltd.保留所有权利。
A considerable number of alternative approaches have been suggested during the last years to predict species richness of a given taxon, while retaining information on the identities of the observed individuals. Such information can be extremely useful for choosing conservation priority areas, either by using raw richness values or, preferentially, by considering the complementarity between potential sites. Among the most popular approaches is the use of indicator taxa. Both one single family and a group of several families are here tested in their ability to predict the number of spider (Araneae) species independently of sampling effort, geographical location and type of habitat. We use data from three Portuguese protected areas as a test case. A two-family indicator group - Gnaphosidae and Theridiidae - is found to be a good surrogate of species richness, even if caution is needed regarding the comparison of sites with considerably different sampling effort or vegetation cover. No single family can be seen as a good surrogate of the totality of spiders. In addition, only a group of the two mentioned families is found to be efficient and reliable either when used to rank sites according to taxa richness or for determining near-minimum sets of sites for conservation. We therefore recommend surrogacy with this indicator group as a promising approach for the prediction of spider species richness or evaluation and ranking of areas according to their conservation importance. The reached conclusions should uphold for Portugal and the entire Mediterranean region. (C) 2004 Elsevier Ltd. All rights reserved.