干旱区生态环境知识资源中心(Arid): Broad-scale impacts of an invasive native predator on a sensitive native prey species within the shifting avian community of the North American Great Basin

Arid

DOI	10.1016/j.biocon.2020.108409
	Broad-scale impacts of an invasive native predator on a sensitive native prey species within the shifting avian community of the North American Great Basin
	Coates, Peter S.1; O'; Neil, Shawn T.1; Brussee, Brianne E.1; Ricca, Mark A.1; Jackson, Pat J.2; Dinkins, Jonathan B.3; Howe, Kristy B.4; Moser, Ann M.5; Foster, Lee J.6; Delehanty, David J.7
通讯作者	Coates, Peter S.
来源期刊	BIOLOGICAL CONSERVATION
ISSN	0006-3207
EISSN	1873-2917
出版年	2020
卷号	243
英文摘要	Human enterprise has modified ecosystem processes through direct and indirect alteration of native predators' distribution and abundance. For example, human activities subsidize food, water, and shelter availability to generalist predators whose subsequent increased abundance impacts lower trophic-level prey species. The common raven (Corvus corax; hereafter, raven) is an avian scavenger and predator, native to the northern hemisphere, that can become invasive when subsidized. Raven populations are increasing at unprecedented rates in many regions globally. Information regarding scale of impact and potential ecological thresholds is needed to guide conservation actions aimed at reducing adverse effects on sensitive prey. We conducted a multipart analysis to investigate broad-scale variation in raven densities and impacts on nesting greater sage-grouse (Centrocercus urophasianus), an indicator species for sagebrush ecosystems in western North America. We estimated raven densities using > 16,000 point surveys over 10 years within the Great Basin, USA, and examined associations with anthropogenic and environmental covariates. Average density was 0.54 ravens km(-2) (95% CI: 0.42-0.70), with higher densities at lower relative elevations comprising increased agriculture and development. We then used a reduced dataset to estimate the effect of raven density on sage-grouse nest survival (nests = 737). We identified negative impacts to nesting sage-grouse, especially where raven density exceeded similar to 0.40 km(-2), a potential ecological threshold. We mapped regions where elevated raven densities were predicted to depress sage-grouse population growth in the absence of compensatory demographic responses from other sage-grouse life-history stages, and found similar to 64% of sage-grouse breeding areas were adversely impacted by high raven density.
英文关键词	Anthropogenic subsidies Nest predators Nest survival Overabundant native species Sagebrush Spillover predation
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000526787100006
WOS关键词	CONTERMINOUS UNITED-STATES ; COMMON RAVEN PREDATION ; SAGE-GROUSE ; SUBSIDIZED PREDATORS ; MOJAVE DESERT ; POPULATION ; REMOVAL ; PARAMETERS ; MOVEMENTS ; ABUNDANCE
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
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/2XILL650/314179
作者单位	1.US Geol Survey, Western Ecol Res Ctr, Dixon, CA 95620 USA; 2.Nevada Dept Wildlife, Reno, NV 89511 USA; 3.Oregon State Univ, Dept Anim & Rangeland Sci, Corvallis, OR 97331 USA; 4.Nevada Nat Heritage Program, Carson City, NV 89701 USA; 5.Idaho Dept Fish & Game, Boise, ID 83707 USA; 6.Oregon Dept Fish & Wildlife, Hines, OR 97738 USA; 7.Idaho State Univ, Dept Biol Sci, Pocatello, ID 83209 USA
推荐引用方式 GB/T 7714	Coates, Peter S.,O',Neil, Shawn T.,et al. Broad-scale impacts of an invasive native predator on a sensitive native prey species within the shifting avian community of the North American Great Basin[J]. United States Geological Survey,2020,243.
APA	Coates, Peter S..,O'.,Neil, Shawn T..,Brussee, Brianne E..,Ricca, Mark A..,...&Delehanty, David J..(2020).Broad-scale impacts of an invasive native predator on a sensitive native prey species within the shifting avian community of the North American Great Basin.BIOLOGICAL CONSERVATION,243.
MLA	Coates, Peter S.,et al."Broad-scale impacts of an invasive native predator on a sensitive native prey species within the shifting avian community of the North American Great Basin".BIOLOGICAL CONSERVATION 243(2020).