Which intrinsic traits predict vulnerability to extinction depends on the actual threatening processes
Which intrinsic traits predict vulnerability to extinction depends on the actual threatening processes
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DOI：
10.1890/es12-00380.1
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发表时间：
2013-06-01
期刊：
影响因子：
2.7
通讯作者：
Revilla, Eloy
中科院分区：
文献类型：
--
作者：
Gonzalez-Suarez, Manuela;Gomez, Alicia;Revilla, Eloy
了解是什么使一些物种比其他物种更容易灭绝是保护的一个重要挑战。许多比较分析探讨了这一问题，探讨内在和外在特征如何与脆弱性的一般估计相关联。然而，这些一般性估计没有考虑到导致物种灭绝的实际威胁，因此更难以转化为有效的管理。我们提供了一个更新的描述的类型和空间分布的威胁，影响全球哺乳动物使用的数据从世界自然保护联盟的5941种哺乳动物。利用这些数据，我们探索内在物种特征和特定威胁之间的联系，以确定与特定灭绝驱动因素相关的关键内在特征。我们发现，由小型栖息地专家形成的家庭更有可能受到栖息地改变过程的威胁;而由较大的哺乳动物与小产仔数形成的家庭更有可能受到直接影响生存的过程的威胁。这些结果强调了在比较研究中考虑实际威胁过程的重要性。我们还讨论了在全球评估（如IUCN红色名录）中对威胁重要性进行标准化和排名的必要性，以提高我们理解是什么使某些物种比其他物种更容易灭绝的能力。
Understanding what makes some species more vulnerable to extinction than others is an important challenge for conservation. Many comparative analyses have addressed this issue exploring how intrinsic and extrinsic traits associate with general estimates of vulnerability. However, these general estimates do not consider the actual threats that drive species to extinction and hence, are more difficult to translate into effective management. We provide an updated description of the types and spatial distribution of threats that affect mammals globally using data from the IUCN for 5941 species of mammals. Using these data we explore the links between intrinsic species traits and specific threats in order to identify key intrinsic features associated with particular drivers of extinction. We find that families formed by small-size habitat specialists are more likely to be threatened by habitat-modifying processes; whereas, families formed by larger mammals with small litter sizes are more likely to be threatened by processes that directly affect survival. These results highlight the importance of considering the actual threatening process in comparative studies. We also discuss the need to standardize and rank threat importance in global assessments such as the IUCN Red List to improve our ability to understand what makes some species more vulnerable to extinction than others.