气候变化领域集成服务门户(CCPortal): Site occupancy and reproductive dynamics of California spotted owls in a mixed-ownership landscape

CCPortal

DOI	10.1016/j.foreco.2019.01.028
	Site occupancy and reproductive dynamics of California spotted owls in a mixed-ownership landscape
	Hobart B.K.; Roberts K.N.; Dotters B.P.; Berigan W.J.; Whitmore S.A.; Raphael M.G.; Keane J.J.; Gutiérrez R.J.; Peery M.Z.
发表日期	2019
ISSN	0378-1127
起始页码	188
结束页码	200
卷号	437
英文摘要	Biodiversity conservation in mixed-ownership landscapes often depends on contributions from privately-owned lands, where natural resource development can alter and produce novel habitat conditions for species of conservation concern. A lack of research on private lands stemming from access issues and concerns over regulatory outcomes, however, often limits evaluation of the impact of land management. The California spotted owl (Strix occidentalis occidentalis), for example, often occurs in mixed-ownership landscapes but research on this species has occurred primarily on public lands. Therefore, we conducted the first large-scale private-public cooperative and comparative analyses of California spotted owls inhabiting mixed-ownership landscapes in the Sierra Nevada, California, USA. We surveyed 151 spotted owl sites from 2013 to 2017 within two study systems: one comprised primarily of public lands (national forests) where the owl population has declined over the last ∼20 years and a set of study areas comprised mostly of private lands on which relatively high estimates of site occupancy were recently reported. Multistate occupancy modeling indicated that the probability of occupancy and successful reproduction by owls depended on site status in the previous year, with both probabilities highest at sites where owls successfully reproduced in the previous year, intermediate at occupied sites where owls had not successfully reproduced, and lowest at previously unoccupied sites. Site occupancy probability was higher at low-elevation sites and lower at sites that contained more open area and younger forest. Successful reproduction by owls was also more likely at low-elevation sites and at sites with more north-facing slope and younger forest with high basal area of hardwoods. Study areas with more private lands tended to occur at lower elevations and have greater amounts of younger forest with high basal area of hardwoods, which may have contributed to higher occupancy and reproductive probabilities than the study area with more public land. Thus, differences in occupancy and reproductive probabilities between study areas appeared to be the result of differences in topographic and vegetation conditions that likely promote populations of key spotted owl prey species. Our results suggest that private lands in mixed-ownership landscapes may contribute to spotted owl conservation by conferring different benefits to owls than public lands and, more broadly, highlight the importance of including private lands in conservation research and planning. © 2019 Elsevier B.V.
英文关键词	California spotted owl; Mixed-ownership landscapes; Multistate; Occupancy modeling; Private land; Public land; Sierra Nevada
语种	英语
scopus关键词	Biodiversity; Conservation; Forestry; Hardwoods; Land use; Probability; California spotted owls; Mixed ownership; Multi-state; Private land; Public lands; Sierra Nevada; Birds; basal area; conservation planning; ecological modeling; habitat type; landscape; natural resource; public-private partnership; raptor; resource development; species conservation; vegetation cover; Biodiversity; Conservation; Forestry; Hardwoods; Land Use; Probability; 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/156147
作者单位	Department of Forest and Wildlife Ecology, University of Wisconsin‐Madison, Madison, WI, United States; Sierra Pacific Industries, PO Box 496014, Redding, CA, United States; USDA Forest Service, Pacific Northwest Research Station, Olympia, WA, United States; USDA Forest Service, Pacific Southwest Research Station, Davis, CA, United States; Department of Fisheries, Wildlife and Conservation Biology, University of Minnesota, St. Paul, MN, United States
推荐引用方式 GB/T 7714	Hobart B.K.,Roberts K.N.,Dotters B.P.,et al. Site occupancy and reproductive dynamics of California spotted owls in a mixed-ownership landscape[J],2019,437.
APA	Hobart B.K..,Roberts K.N..,Dotters B.P..,Berigan W.J..,Whitmore S.A..,...&Peery M.Z..(2019).Site occupancy and reproductive dynamics of California spotted owls in a mixed-ownership landscape.Forest Ecology and Management,437.
MLA	Hobart B.K.,et al."Site occupancy and reproductive dynamics of California spotted owls in a mixed-ownership landscape".Forest Ecology and Management 437(2019).