干旱区生态环境知识资源中心(Arid): Desert bighorn sheep habitat selection, group size, and mountain lion predation risk

Arid

DOI	10.1002/jwmg.22173
	Desert bighorn sheep habitat selection, group size, and mountain lion predation risk
	Jones, Andrew S.; Rubin, Esther S.; Clement, Matthew J.; Harding, Larisa E.; Mesler, Jacob I.
通讯作者	Jones, AS (corresponding author)，Arizona Game & Fish Dept, 5000 W Carefree Highway, Phoenix, AZ 85086 USA.
来源期刊	JOURNAL OF WILDLIFE MANAGEMENT
ISSN	0022-541X
EISSN	1937-2817
出版年	2022
卷号	86 期号:2
英文摘要	Bighorn sheep (Ovis canadensis) evolved for thousands of years in the presence of numerous predators, including mountain lions (Puma concolor). Bighorn sheep have presumably developed predator avoidance strategies; however, the effectiveness of these strategies in reducing risk of mountain lion predation is not well understood. These strategies are of increasing interest because mountain lion predation on bighorn sheep has been identified as a leading cause of mortality in some sheep populations. Therefore, we investigated how mountain lions affect both bighorn sheep habitat selection and risk of mortality in Arizona, USA. We used 2 approaches to investigate the predator-prey relationship between mountain lions and bighorn sheep. We fit 103 bighorn sheep (81 females and 22 males) with global positioning system radio-collars in 2 Arizona populations from 2013 to 2017, and used a negative binomial resource selection probability function to evaluate whether bighorn sheep selected for habitat features in accordance with presumed predator avoidance strategies, including terrain ruggedness, slope, topographic position, and horizontal obstruction, in 2 seasons (winter and summer). We then estimated how habitat features such as terrain ruggedness, slope, horizontal obstruction, and group size, influence the risk of mortality due to mountain lion predation using an Andersen-Gill proportional hazards model. Generally, both sexes selected areas with lower horizontal obstruction and intermediate ruggedness and slope, but selection patterns differed between seasons and sexes. The use of more rugged areas and steeper slopes decreased the risk of mortality due to mountain lion predation, consistent with presumed predator avoidance strategies. Increased group size decreased risk of bighorn sheep mortality due to mountain lion predation but this effect became marginal at approximately 10 individuals/group. We did not identify a relationship between horizontal obstruction and bighorn sheep mortality risk. Our findings can be used in habitat and population management decisions such as the prioritization of habitat restoration sites or selection of translocation sites. In addition, we suggest that augmentation of low-density bighorn sheep populations may reduce mountain lion predation risk by increasing group size, and that releasing large groups of bighorn sheep in population augmentation and reintroduction efforts may help to reduce mountain lion predation.
英文关键词	Arizona bighorn sheep mortality mountain lion Ovis canadensis predation Puma concolor Sonoran Desert
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000741052100001
WOS关键词	RESOURCE SELECTION ; SEXUAL SEGREGATION ; SONORAN DESERT ; MODELS ; MOVEMENT ; PATTERNS ; SURVIVAL ; DEER ; CONSEQUENCES ; VEGETATION
WOS类目	Ecology ; Zoology
WOS研究方向	Environmental Sciences & Ecology ; Zoology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376578
作者单位	[Jones, Andrew S.; Rubin, Esther S.; Clement, Matthew J.; Harding, Larisa E.; Mesler, Jacob I.] Arizona Game & Fish Dept, 5000 W Carefree Highway, Phoenix, AZ 85086 USA; US Fish & Wildlife Serv, 5275 Leesburg Pike, Falls Church, VA 22041 USA
推荐引用方式 GB/T 7714	Jones, Andrew S.,Rubin, Esther S.,Clement, Matthew J.,et al. Desert bighorn sheep habitat selection, group size, and mountain lion predation risk[J],2022,86(2).
APA	Jones, Andrew S.,Rubin, Esther S.,Clement, Matthew J.,Harding, Larisa E.,&Mesler, Jacob I..(2022).Desert bighorn sheep habitat selection, group size, and mountain lion predation risk.JOURNAL OF WILDLIFE MANAGEMENT,86(2).
MLA	Jones, Andrew S.,et al."Desert bighorn sheep habitat selection, group size, and mountain lion predation risk".JOURNAL OF WILDLIFE MANAGEMENT 86.2(2022).