The Perdido Key beach mouse (Peromyscus polionotus trissyllepsis), Choctawhatchee beach mouse (P. p. allophrys), and St. Andrew beach mouse (P. p. peninsularis) are 3 federally endangered subspecies that inhabit coastal dunes of Alabama and Florida, USA. Conservation opportunities for these subspecies are limited and costly. Consequently, well‐targeted efforts are required to achieve their downlisting criteria. To aid the development of targeted management scenarios that are designed to achieve downlisting criteria, we developed a Bayesian network model that uses habitat characteristics to predict the probability of beach mouse presence at a 30‐m resolution across a portion of the Florida Panhandle. We then designed alternative management scenarios for a variety of habitat conditions for coastal dunes. Finally, we estimated how much area is needed to achieve the established downlisting criterion (i.e., habitat objective) and the amount of effort needed to achieve the habitat objective (i.e., management efficiency). The results suggest that after 7 years of post‐storm recolonization, habitat objectives were met for Perdido Key (within its Florida critical habitat) and Choctawhatchee beach mice. The St. Andrew beach mouse required 5.14 km² of additional critical habitat to be protected and occupied. The St. Andrew beach mouse habitat objective might be achieved by first restoring protected critical habitat to good dune conditions and then protecting or restoring the unprotected critical habitat with the highest predicted probability of beach mouse presence. This scenario provided a 28% increase in management efficiency compared to a scenario that randomly protected or restored undeveloped unprotected critical habitat. In total, when coupled with established downlisting criteria, these quantitative and spatial decision support tools could provide insight into how much habitat is available, how much more is needed, and targeted conservation or restoration efforts that might efficiently achieve habitat objectives. © 2020 The Wildlife Society.

中文翻译：

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沙滩鼠的战略栖息地保护：估计管理方案的效率。

Perdido Key沙滩老鼠（Peromyscus polionotus trissyllepsis），Choctawhatchee沙滩老鼠（P. p。allophrys）和St. Andrew沙滩老鼠（P. p。peninsularis））是居住在美国阿拉巴马州和佛罗里达州沿海沙丘上的3个联邦濒危亚种。这些亚种的保护机会有限且成本高昂。因此，需要有针对性的努力才能达到其降级标准。为了帮助开发旨在实现降级标准的目标管理方案，我们开发了一种贝叶斯网络模型，该模型使用栖息地特征来预测在佛罗里达Panhandle的一部分上以30 m的分辨率出现沙滩鼠的可能性。然后，我们针对沿海沙丘的各种栖息地条件设计了替代管理方案。最后，我们估算了达到既定的降级标准（即栖息地目标）需要多少面积，以及实现栖息地目标所需的工作量（即 管理效率）。结果表明，在暴风雨后重新定居7年之后，Perdido Key（在其佛罗里达重要栖息地内）和Choctawhatchee海滩小鼠的栖息地目标得以实现。需要圣安德鲁海滩鼠标5.14公里^还有2个重要的栖息地需要保护和占领。通过首先将受保护的关键栖息地恢复到良好的沙丘条件，然后以最高的预测的沙滩鼠标存在概率来保护或恢复未受保护的关键栖息地，可以实现圣安德鲁海滩鼠标栖息地的目标。与随机保护或恢复未开发，未保护的关键栖息地的方案相比，该方案的管理效率提高了28％。总体而言，与既定的降级标准结合使用时，这些定量和空间决策支持工具可以洞悉可用的生境数量，需要的生境数量以及可以有效实现生境目标的有针对性的保护或恢复工作。©2020野生动物协会。