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树的分布和花展示影响了临灭绝的授粉蝙蝠的食率和对保护的影响

Kristen M Lear^1,2,3, Clinton T Moore^2,3, Elizabeth G King^2,3,4

¹Bat Conservation International Austin Texas USA.

Ecology and evolution

|March 18, 2024

概括

保护主义者可以帮助墨西哥长鼻蝙蝠 (Leptonycteris nivalis) 通过种植青叶来增加花的可用性. 管理策略重点关注花资源和息地结构,以支持这个危物种.

科学领域:

生态生态学生态生态学
保护生物学保护生物学
动物行为动物行为

背景情况:

野生动物保护的决定往往是基于不完整的生态数据做出的.
增加临灭绝的墨西哥长鼻蝙蝠 (Leptonycteris nivalis) 的食资源是保护的优先事项.
关于Leptonycteris nivalis的食行为和资源需求的知识有限.

研究的目的:

了解花资源的可用性如何影响Leptonycteris nivalis的访问率.
为了确定影响蝙蝠来访的单个青叶和局部特征.
为增加蝙蝠食资源提供保护策略的信息.

主要方法:

在2017-2018年夏季期间,在墨西哥东北部46个晚上观察到62个开花的树.
分析了Agave规模的因素 (开放的树数量,开花的现象学) 和局部规模的因素 (特定密度,死茎密度).
确定了访问率与这些因素之间的统计关系.

主要成果:

访问率与开放的花数量和早期的开花阶段 (下位置) 呈正相关.
观察到一种负面相互作用:丰富的开放花朵放大了下位置对拜访的影响.
参观率与附近的开花同物种密度有负相关性,与死立的茎密度有正相关性.

结论:

保护工作可以通过增加同时开花的花朵和确保低位开花的可用性来增强Leptonycteris nivalis的食.
在集群中种植青叶树并保留死去的站立茎也可能有利于蝙蝠食.
这些发现支持蝙蝠保护的适应性管理策略,将息地管理与生态理解相结合.

关键词:

墨西哥长鼻蝙蝠 (Leptonycteris nivalis) 是一个有着长鼻子的蝙蝠.阿加维斯 (Agaves) 是一种植物.蝙蝠保护组织蝙蝠保护组织危物种危物种危物种食分析食分析恢复恢复恢复

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