气候变化领域集成服务门户(CCPortal): Space use, forays, and habitat selection by California Spotted Owls (Strix occidentalis occidentalis) during the breeding season: New insights from high resolution GPS tracking

CCPortal

DOI	10.1016/j.foreco.2018.10.017
	Space use, forays, and habitat selection by California Spotted Owls (Strix occidentalis occidentalis) during the breeding season: New insights from high resolution GPS tracking
	Blakey R.V.; Siegel R.B.; Webb E.B.; Dillingham C.P.; Bauer R.L.; Johnson M.; Kesler D.C.
发表日期	2019
ISSN	0378-1127
起始页码	912
结束页码	922
卷号	432
英文摘要	Our current understanding of the relationship between imperiled species and forest management can benefit from global positioning system (GPS) technologies. Fauna of lateseral stage forests have historically been difficult to detect and track in rugged terrain, leading to challenges in movement characterization and conservation. We investigated movement of California Spotted Owls (Strix occidentalis occidentalis) using automated GPS loggers affixed to 15 owls in the northern Sierra Nevada, California. We used >17,000 locations from individual owls to characterize homerange size, movement distances, and roosting and foraging habitat selection at four spatio-temporal scales (landscape, home range, foray, nightly) during the breeding season (April–August). Additionally, we assessed owl use of Protected Activity Centers (PACs), which are designated by the U.S.D.A. Forest Service to protect nesting and roosting habitat. Our results corroborated some previous findings about habitat requirements of California Spotted Owls, while also revealing new nuances in space use and habitat selection. Roosting and foraging owls selected stands with high canopy cover and large trees at multiple spatio-temporal scales, with foraging owls showing strongest selection at the largest (landscape) scale investigated. Although owls selected for PACs while foraging and roosting, PACs protected less than one quarter of foraging space use (volume of use) and fewer than half of observed roosts during the breeding season. Female owl home ranges were double the size of male home ranges, and distances travelled from the nest by females were 1.3 times greater than distances travelled by males, with non-breeding females travelling farthest and visiting up to six PACs during a single breeding season. Foraying behavior of this sort has not been documented previously in California Spotted Owls. Our findings support protection of later seral stage forest attributes for roosting and foraging California Spotted Owls. Given their selection for later seral forest attributes, strongest evidence of foraging habitat selection at the landscape scale, long distances travelled by owls and limited habitat protection afforded by PACs, habitat connectivity across the landscape is likely an important component for owl conservation, and distribution of current protected areas may be inadequate for this wide-ranging species. © 2018 Elsevier B.V.
英文关键词	California Spotted Owl; Canopy cover; Conservation; Foraging; Foray; GPS tracking; Habitat selection; High resolution tracking; Home range; Later seral; Management; Movement; Old growth; Roost; Sierra Nevada; Strix occidentalis occidentalis
语种	英语
scopus关键词	Conservation; Ecosystems; Forestry; Global positioning system; Management; California spotted owls; Canopy cover; Foraging; Foray; GPS tracking; Habitat selection; High resolution; Home range; Later seral; Movement; Old growth; Roost; Sierra Nevada; Strix occidentalis occidentalis; Birds; breeding season; canopy; connectivity; conservation management; conservation status; foraging behavior; forest management; GPS; habitat conservation; habitat selection; home range; landscape; movement; old-growth forest; protected area; raptor; roosting; space use; tracking; Birds; Breeding; California; Conservation; Ecosystems; Forestry; Management; Selection; California; Sierra Nevada [California]; United States; Strigiformes; Strix occidentalis occidentalis
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/156323
作者单位	The Institute for Bird Populations, PO Box 1346, Point Reyes StationCA 94956, United States; Missouri Cooperative Fish and Wildlife Research Unit, School of Natural Resources, University of Missouri, 302 Anheuser-Busch Natural Resources Building, Columbia, MO 65211, United States; U.S. Geological Survey, Missouri Cooperative Fish and Wildlife Research Unit, School of Natural Resources, University of Missouri, 302 Anheuser-Busch Natural Resources Building, Columbia, MO 65211, United States; U.S.D.A. Forest Service, Plumas National Forest, 159 Lawrence Street, Quincy, CA 95971, United States
推荐引用方式 GB/T 7714	Blakey R.V.,Siegel R.B.,Webb E.B.,et al. Space use, forays, and habitat selection by California Spotted Owls (Strix occidentalis occidentalis) during the breeding season: New insights from high resolution GPS tracking[J],2019,432.
APA	Blakey R.V..,Siegel R.B..,Webb E.B..,Dillingham C.P..,Bauer R.L..,...&Kesler D.C..(2019).Space use, forays, and habitat selection by California Spotted Owls (Strix occidentalis occidentalis) during the breeding season: New insights from high resolution GPS tracking.Forest Ecology and Management,432.
MLA	Blakey R.V.,et al."Space use, forays, and habitat selection by California Spotted Owls (Strix occidentalis occidentalis) during the breeding season: New insights from high resolution GPS tracking".Forest Ecology and Management 432(2019).