气候变化领域集成服务门户(CCPortal): Prey of reintroduced fishers and their habitat relationships in the Cascades Range, Washington

CCPortal

DOI	10.1016/j.foreco.2020.117888
	Prey of reintroduced fishers and their habitat relationships in the Cascades Range, Washington
	Parsons M.A.; Lewis J.C.; Pauli J.N.; Chestnut T.; Ransom J.I.; Werntz D.O.; Prugh L.R.
发表日期	2020
ISSN	0378-1127
卷号	460
英文摘要	Conservation and recovery of forest carnivores requires an understanding of their habitat requirements, as well as requirements of their prey. In much of the western United States, trapping and habitat loss led to extirpations of fishers (Pekania pennanti) by the mid-20th century, and reintroductions are ongoing to restore fishers to portions of their former range. Fisher recovery in Washington State has been limited by isolation from other populations, but other potentially important factors, such as diet of fishers in this region and prey availability, have not been thoroughly investigated. We collected hair samples from potential prey and fishers for stable isotope analysis to identify important prey items for fishers within a reintroduction area in southern Washington. We then estimated the abundance of prey species at 21 sites across a gradient of forest structural classes within the fisher reintroduction area, and assessed the effects of forest age and vegetation on the prey community using permutational multivariate analysis of variance and non-metric multidimensional scaling. Stable isotopes revealed that larger prey items, including snowshoe hares (Lepus americanus) and/or mountain beavers (Aplodontia rufa), were the most important prey item(s) for fishers in the southern Cascades. We found distinct but equally diverse prey communities in old-growth (unmanaged) and young (heavily managed) forest stands, with snowshoe hares and mountain beavers most common in young forests, while chipmunks (Neotamius spp.) and small mammals were more common in older forests. Our results suggest a discrepancy between the habitats where important fisher prey are most abundant and habitat requirements of fishers. Snowshoe hares and mountain beavers were most abundant in young forests, whereas fishers are associated with landscapes dominated by older forest stands or those that provide large woody structures, which fishers use for denning and resting. Our results add to growing evidence that forest landscape mosaics provide valuable habitat for fishers in the Pacific Northwest, suggesting that both mature and younger forest stands are important for fishers and fisher recovery. © 2020 Elsevier B.V.
英文关键词	Aplodontia rufa; Habitat use; Heterogeneous forests; Lepus americanus; Pekania pennanti; Prey community; Small mammal; Stable isotopes
语种	英语
scopus关键词	Ecosystems; Isotopes; Landforms; Mammals; Multivariant analysis; Recovery; Aplodontia rufa; Habitat use; Heterogeneous forests; Lepus americanus; Pekania pennanti; Prey community; Small mammals; Stable isotopes; Forestry; abundance estimation; dietary intake; food availability; habitat use; lagomorph; multivariate analysis; prey availability; reintroduction; rodent; stable isotope; variance analysis; woodland; Ecosystems; Forestry; Forests; Isotopes; Mammals; Recovery; Specifications; Washington; Cascade Range; Cascade Range; Pacific Northwest; United States; Aplodontia rufa; Aplodontiidae; Lepus americanus; Mammalia
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155469
作者单位	School of Environmental and Forests Sciences, University of Washington, Box 352100, Seattle, WA 98195, United States; Washington Department of Fish and Wildlife, 600 Capitol Way N, Olympia, WA 98501, United States; Department of Forest and Wildlife Ecology, University of Wisconsin-Madison, 1630 Linden Drive, Madison, WI 53706, United States; National Park Service, Mount Rainier National Park, 55210 238th Avenue E, Ashford, WA 98304, United States; National Park Service, North Cascades National Park Service Complex, 810 State Route 20, Sedro-Woolley, WA 98284, United States; Conservation Northwest, 1829 10th Avenue W, Suite B, Seattle, WA 98119, United States
推荐引用方式 GB/T 7714	Parsons M.A.,Lewis J.C.,Pauli J.N.,et al. Prey of reintroduced fishers and their habitat relationships in the Cascades Range, Washington[J],2020,460.
APA	Parsons M.A..,Lewis J.C..,Pauli J.N..,Chestnut T..,Ransom J.I..,...&Prugh L.R..(2020).Prey of reintroduced fishers and their habitat relationships in the Cascades Range, Washington.Forest Ecology and Management,460.
MLA	Parsons M.A.,et al."Prey of reintroduced fishers and their habitat relationships in the Cascades Range, Washington".Forest Ecology and Management 460(2020).