干旱区生态环境知识资源中心(Arid): Ecological effects of fear: How spatiotemporal heterogeneity in predation risk influences mule deer access to forage in a sky-island system

Arid

DOI	10.1002/ece3.5291
	Ecological effects of fear: How spatiotemporal heterogeneity in predation risk influences mule deer access to forage in a sky-island system
	Lowrey, Christopher 1; Longshore, Kathleen M.1; Choate, David M.2; Nagol, Jyoteshwar R.3; Sexton, Joseph 4; Thompson, Daniel 2
通讯作者	Lowrey, Christopher
来源期刊	ECOLOGY AND EVOLUTION
ISSN	2045-7758
出版年	2019
卷号	9 期号:12 页码:7213-7226
英文摘要	Forage availability and predation risk interact to affect habitat use of ungulates across many biomes. Within sky-island habitats of the Mojave Desert, increased availability of diverse forage and cover may provide ungulates with unique opportunities to extend nutrient uptake and/or to mitigate predation risk. We addressed whether habitat use and foraging patterns of female mule deer (Odocoileus hemionus) responded to normalized difference vegetation index (NDVI), NDVI rate of change (green-up), or the occurrence of cougars (Puma concolor). Female mule deer used available green-up primarily in spring, although growing vegetation was available during other seasons. Mule deer and cougar shared similar habitat all year, and our models indicated cougars had a consistent, negative effect on mule deer access to growing vegetation, particularly in summer when cougar occurrence became concentrated at higher elevations. A seemingly late parturition date coincided with diminishing NDVI during the lactation period. Sky-island populations, rarely studied, provide the opportunity to determine how mule deer respond to growing foliage along steep elevation and vegetation gradients when trapped with their predators and seasonally limited by aridity. Our findings indicate that fear of predation may restrict access to the forage resources found in sky islands.
英文关键词	cougar mule deer NDVI predator-prey RSF sky islands
类型	Article
语种	英语
国家	USA
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000478648300036
WOS关键词	BIGHORN SHEEP ; HABITAT USE ; LANDSCAPE ; SELECTION ; PATTERNS ; UNGULATE ; BEHAVIOR ; PARTURITION ; RESPONSES ; MOVEMENT
WOS类目	Ecology ; Evolutionary Biology
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
来源机构	United States Geological Survey
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215268
作者单位	1.US Geol Survey, 160 N Stephanie St, Henderson, NV 89074 USA; 2.Univ Las Vegas, Las Vegas, NV USA; 3.Univ Maryland, College Pk, MD 20742 USA; 4.TerraPulse Inc, North Potomac, MD USA
推荐引用方式 GB/T 7714	Lowrey, Christopher,Longshore, Kathleen M.,Choate, David M.,et al. Ecological effects of fear: How spatiotemporal heterogeneity in predation risk influences mule deer access to forage in a sky-island system[J]. United States Geological Survey,2019,9(12):7213-7226.
APA	Lowrey, Christopher,Longshore, Kathleen M.,Choate, David M.,Nagol, Jyoteshwar R.,Sexton, Joseph,&Thompson, Daniel.(2019).Ecological effects of fear: How spatiotemporal heterogeneity in predation risk influences mule deer access to forage in a sky-island system.ECOLOGY AND EVOLUTION,9(12),7213-7226.
MLA	Lowrey, Christopher,et al."Ecological effects of fear: How spatiotemporal heterogeneity in predation risk influences mule deer access to forage in a sky-island system".ECOLOGY AND EVOLUTION 9.12(2019):7213-7226.