Unveiling the conservation biogeography of a data-deficient endangered bird species under climate change.
Unveiling the conservation biogeography of a data-deficient endangered bird species under climate change.
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揭示气候变化下数据缺乏的濒危鸟类的保护生物地理学
DOI：
10.1371/journal.pone.0084529
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发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
Liu Y
中科院分区：
文献类型：
--
作者：
Hu J;Liu Y
确定具有独特生态位和独特行为的物种的地理格局和潜在环境关联仍然是一个挑战。这反过来又阻碍了我们对生态的理解，以及对受威胁物种的有效保护管理。白耳夜鹭（Gorsachius magnigus）是一种非迁徙的夜间鸟类，在东亚山区森林中有零星分布。目前在世界自然保护联盟的红色名录中被列为“濒危”，主要是由于其有限的范围和破碎的栖息地。为了提高我们的知识，这一物种的地理分布和保护，我们模拟了其适宜的栖息地的地理格局，并评估了气候变化的潜在影响，使用生态位建模与最大熵的方法在Maxent实施。结果表明，东亚地区适宜生境面积约为13万km2，在空间上可划分为中国南部、西南部和越南北方的几个山脉。在最悲观的扩散条件下，在预测的气候变化条件下，苍鹭的适宜生境范围可能缩小35%以上，而如果苍鹭能够无限制地扩散，则会有更多的适宜生境。对Gorsachius magnificus的栖息地适宜性的重大未来变化建议在可能考虑的任何红色名单状态降级时要谨慎。我们的研究结果还发现了未来对新人口进行调查的潜在合适区域。总的来说，这项研究表明，生态位建模提供了一个重要的工具，评估栖息地的适宜性和气候变化对一个谜和濒危物种的潜在影响的基础上有限的存在数据。
It remains a challenge to identify the geographical patterns and underlying environmental associations of species with unique ecological niches and distinct behaviors. This in turn hinders our understanding of the ecology as well as effective conservation management of threatened species. The white-eared night heron (Gorsachius magnificus) is a non-migratory nocturnal bird species that has a patchy distribution in the mountainous forests of East Asia. It is currently categorized as “Endangered” on the IUCN Red List, primarily due to its restricted range and fragmented habitat. To improve our knowledge of the biogeography and conservation of this species, we modeled the geographical pattern of its suitable habitat and evaluated the potential impacts of climate change using ecological niche modeling with a maximum entropy approach implemented in Maxent. Our results indicated that the amount of suitable habitat in all of East Asia was about 130 000 km2, which can be spatially subdivided into several mountain ranges in southern and southwestern China and northern Vietnam. The extent of suitable habitat range may shrink by more than 35% under a predicted changing climate when assuming the most pessimistic condition of dispersal, while some more suitable habitat would be available if the heron could disperse unrestrainedly. The significant future changes in habitat suitability suggested for Gorsachius magnificus urge caution in any downgrading of Red List status that may be considered. Our results also discern potentially suitable areas for future survey efforts on new populations. Overall, this study demonstrates that ecological niche modeling offers an important tool for evaluating the habitat suitability and potential impacts of climate change on an enigmatic and endangered species based on limited presence data.
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影响因子：
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