The importance of thinking big: Large-scale prey conservation drives black-footed ferret reintroduction success
The importance of thinking big: Large-scale prey conservation drives black-footed ferret reintroduction success
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DOI：
10.1016/j.biocon.2011.01.025
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发表时间：
2011-05-01
影响因子：
5.9
通讯作者：
Millspaugh, Joshua J.
中科院分区：
文献类型：
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作者：
Jachowski, David S.;Gitzen, Robert A.;Millspaugh, Joshua J.
对野生动物重新引入的客观评价对于提高未来重建濒危物种的努力的成功率至关重要。重新引入北美最濒危的哺乳动物之一黑足雪貂（Mustela nigripes）的尝试已经进行了18年，但没有对重新引入成功的相关因素进行定量评估。我们在11个重新引入地点检查了雪貂重新引入成功与疾病爆发、释放策略以及其主要猎物草原土拔鼠（Cynomys sp.）的分布和丰度相关因素之间的关系。与雪貂重新引入成功相关的最重要因素是一个累积度量，包括草原土拨鼠占据的区域的大小和该区域内草原土拨鼠洞穴的密度。四个成功的地点都有草原土拨鼠种群，占据了至少4300公顷的面积。即使草原土拨鼠的穴居密度很高，也不可能有超过30只成年雪貂的地方。提供高质量栖息地的总体重要性表明，管理人员应优先采取行动，维持和加强草原土拨鼠穴居密度高的大面积地区的可用性，由于人为影响和疾病爆发，草原土拨鼠穴居密度越来越少。(C) 2011 Elsevier Ltd.版权所有。
Objective evaluations of wildlife reintroductions are vital for increasing the success of future efforts to re-establish endangered species. Attempts to reintroduce one of the most endangered mammals in North America, the black-footed ferret (Mustela nigripes), have been ongoing for 18 years with no quantitative assessment of factors related to reintroduction success. We examined relationships between ferret reintroduction success and factors associated with disease outbreaks, release strategies, and the distribution and abundance of their primary prey, prairie dogs (Cynomys sp.), at 11 reintroduction sites. The most important factor related to ferret reintroduction success was a cumulative metric incorporating both size of the area occupied by prairie dogs and density of prairie dog burrows within that area. Each of the four successful sites had prairie dog populations that occupied an area of at least 4300 ha. No sites with = 30 adult individual ferrets over multiple years without augmentation even if they had a high prairie dog burrow density. The overarching importance of the availability of high-quality habitat suggests managers should prioritize actions that maintain and enhance the availability of large areas with high prairie dog burrow density, which are becoming increasingly rare due to anthropogenic impacts and disease outbreaks. (C) 2011 Elsevier Ltd. All rights reserved.