Arid
DOI10.1111/rec.12364
Livestock grazing limits beaver restoration in northern New Mexico
Small, Brian A.1,2; Frey, Jennifer K.1; Gard, Charlotte C.3
通讯作者Frey, Jennifer K.
来源期刊RESTORATION ECOLOGY
ISSN1061-2971
EISSN1526-100X
出版年2016
卷号24期号:5页码:646-655
英文摘要

The North American beaver (Castor canadensis) builds dams that pond water on streams, which provide crucial ecological services to aquatic and riparian ecosystems and enhance biodiversity. Consequently, there is increasing interest in restoring beavers to locations where they historically occurred, particularly in the arid western United States. However, despite often intensive efforts to reintroduce beavers into areas where they were severely reduced in numbers or eliminated due to overharvesting in the eighteenth and nineteenth centuries, beavers remain sparse or missing from many stream reaches. Reasons for this failure have not been well studied. Our goal was to evaluate certain biotic factors that may limit the occurrence of dam-building beavers in northern New Mexico, including competitors and availability of summer and winter forage. We compared these factors at primary active dams and at control sites located in stream reaches that were physically suitable for dam-building beavers but where none occurred. Beaver dams mostly occurred at sites that were not grazed or where there was some alternative grazing management, but were mostly absent at sites within Forest Service cattle allotments. Results indicated that cattle grazing influenced the relation between vegetation variables and beaver presence. The availability of willows (Salix spp.) was the most important plant variable for the presence of beaver dams. We conclude that grazing by cattle as currently practiced on Forest Service allotments disrupts the beaver-willow mutualism, rendering stream reaches unsuitable for dam-building beavers. We recommend that beaver restoration will require changes to current livestock management practices.


英文关键词beaver dams Castor canadensis cattle competition habitat requirements riparian Salix willow
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000384009200011
WOS关键词CASTOR-CANADENSIS-KUHL ; CLASSIFICATION-SYSTEM ; RIPARIAN ECOSYSTEMS ; INCISED STREAM ; FOOD SELECTION ; EASTERN OREGON ; WILD UNGULATE ; RIVER-BASIN ; VEGETATION ; WILLOW
WOS类目Ecology
WOS研究方向Environmental Sciences & Ecology
来源机构New Mexico State University
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/196047
作者单位1.New Mexico State Univ, Dept Fish Wildlife & Conservat Ecol, Las Cruces, NM 88003 USA;
2.US Fish & Wildlife Serv, Arlington Ecol Serv Field Off, Arlington, TX 76006 USA;
3.New Mexico State Univ, Dept Econ Appl Stat & Int Business, Las Cruces, NM 88003 USA
推荐引用方式
GB/T 7714
Small, Brian A.,Frey, Jennifer K.,Gard, Charlotte C.. Livestock grazing limits beaver restoration in northern New Mexico[J]. New Mexico State University,2016,24(5):646-655.
APA Small, Brian A.,Frey, Jennifer K.,&Gard, Charlotte C..(2016).Livestock grazing limits beaver restoration in northern New Mexico.RESTORATION ECOLOGY,24(5),646-655.
MLA Small, Brian A.,et al."Livestock grazing limits beaver restoration in northern New Mexico".RESTORATION ECOLOGY 24.5(2016):646-655.
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