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Food habits of breeding Bald Eagles (Haliaeetus leucocephalus ) in Florida Bay, Everglades National Park.

机译：在佛罗里达大沼泽国家公园繁殖白头鹰（Haliaeetus leucocephalus）的饮食习惯。

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The population of Bald Eagles in Florida Bay, Everglades National Park has declined over the past few decades. It is hypothesized that changes in prey availabilities from alterations to ecosystem conditions have contributed to this decline. Our goals were to document diet and explore how prey availabilities may affect the Bald Eagle. For the 2009 and 2010 breeding seasons we collected prey remains from nest sites and video monitored provisioning of prey. Prey remains consisted of 33 species and were compositionally different than prey remains collected prior to ecological changes, suggesting changes in prey availabilities. Also, provisioning rates were significantly lower than Bald Eagles in other North American regions and declined throughout the breeding season. Our results suggest that prey availabilities has affected the food habits of breeding Bald Eagles in Florida Bay, which may be contributing to their decline.

机译：在过去的几十年里，大沼泽国家公园佛罗里达湾的秃头鹰种群减少了。据推测，由于生态系统条件的变化，猎物可利用性的变化导致了这种下降。我们的目标是记录饮食并探索猎物的可用性如何影响白头鹰。在2009年和2010年的繁殖季节，我们从巢穴收集了猎物残骸，并通过视频监控了猎物的供应。猎物残骸由33种物种组成，其成分与生态变化之前收集的猎物残骸不同，表明猎物可利用性发生了变化。此外，配给率明显低于北美其他地区的秃头鹰，并且在整个繁殖季节均下降。我们的结果表明，猎物的可利用性已经影响了佛罗里达湾白头鹰繁殖的饮食习惯，这可能会导致它们的衰落。

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作者
Hanson, Matthew R.;
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作者单位

Florida Atlantic University.;

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授予单位 Florida Atlantic University.;
学科 Environmental science.;Ecology.
学位 M.S.
年度 2012
页码 75 p.
总页数 75
原文格式 PDF
正文语种 eng
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Food habits of breeding Bald Eagles (Haliaeetus leucocephalus ) in Florida Bay, Everglades National Park.

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