检索结果-南通市图书馆

Restricted cross-scale habitat selection by American beavers

Current Zoology 2017年第6期63卷 703-710页

作者： Robert A. FRANCIS Jimmy D. TAYLOR Eric DIBBLE Bronson STRICKLAND Vanessa M. PETRO Christine EASTERWOOD Guiming WANG Department of Wildlife Fisheries and Aquaculture Thompson Hall Mississippi State University Starkville MS 39762 USA USDA APHIS Wildlife Services National Wildlife Research Center Corvallis 3180 SW Jefferson Wav OR 97331 USA Department of Forest Ecosystems and Society Oregon State University 321 Richardson Hall Corvallis OR 97331 USA Environmental Management Division US Army Garrison - Building 4488 Martin Rd SW Redstone Redstone Arsenal AL 35898 USA

Animal habitat selection, among other ecological phenomena, is spatially scale dependent. Habitat selection by American beavers castor canadensis （hereafter, beaver） has been studied at singular spatial scales, but to date no research addresses multi-scale selection. Our objectives were to determine if beaver habitat selection was specialized to semiaquatic habitats and if variables explaining habitat selection are consistent between landscape and fine spatial scales. We built maximum entropy （MaxEnt） models to relate landscape-scale presence-only data to landscape variables, and used generalized linear mixed models to evaluate fine spatial scale habitat selection using global positioning system （GPS） relocation data. Explanatory variables between the landscape and fine spatial scale were compared for consistency. Our findings suggested that beaver habitat selection at coarse （study area） and fine （within home range） scales was congruent, and was influenced by increasing amounts of woody wetland edge density and shrub edge density, and decreasing amounts of open water edge density. Habitat suitability at the landscape scale also increased with decreasing amounts of grass frequency. As territorial, central-place foragers, beavers likely trade-off open water edge density （i.e., smaller non-forested wetlands or lodges closer to banks） for defense and shorter distances to forage and obtain construction material. Woody plants along edges and expanses of open water for predator avoidance may limit beaver fitness and subsequently determine beaver habitat selection.

关键词： castor canadensis maximum entropy scale-dependent selection space use wetland

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：