Arid
Effects of anthropogenic developments on common raven nesting biology in the west Mojave desert
Kristan, William B., III; Boarman, William I.
通讯作者Kristan, William B., III
来源期刊ECOLOGICAL APPLICATIONS
ISSN1051-0761
出版年2007
卷号17期号:6页码:1703-1713
英文摘要

Subsidized predators may affect prey abundance, distribution, and demography. Common Ravens (Corvus corax) are anthropogenically subsidized throughout their range and, in the Mojave Desert, have increased in number dramatically over the last 3-4 decades. Human-provided food resources are thought to be important drivers of raven population growth, but human developments add other features as well, such as nesting platforms. From 1996 to 2000, we examined the nesting ecology of ravens in the Mojave Desert, relative to anthropogenic development. Ravens nested disproportionately near point sources of food and water subsidies (such as towns, landfills, and ponds) but not near roads (sources of road-killed carrion), even though both sources of subsidy enhanced fledging success. Initiation of breeding activity was more likely when a nest from the previous year was present at the start of a breeding season but was not affected by access to food. The relative effect of environmental modifications on fledging success varied from year to year, but the effect of access to human-provided resources was comparatively consistent, suggesting that humans provide consistently high-quality breeding habitat for ravens. Anthropogenic land cover types in the desert are expected to promote raven population growth and to allow ravens to occupy parts of the desert that otherwise would not support them. Predatory impacts of ravens in the Mojave Desert can therefore be considered indirect effects of anthropogenic development.


英文关键词anthropogenic resources Common Raven Corvus corax land cover types Mojave Desert, California nest site choice nesting success subsidized predator
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000249240200013
WOS关键词PREDATION ; LANDSCAPE ; CONSERVATION ; POPULATIONS ; CALIFORNIA ; SURVIVAL ; PATTERNS ; ECOLOGY
WOS类目Ecology ; Environmental Sciences
WOS研究方向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/2XILL650/153975
作者单位(1)Univ Calif Riverside, Dept Biol, Riverside, CA 92521 USA;(2)USGS BRD, Western Ecol Res Ctr, San Diego, CA 92123 USA
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GB/T 7714
Kristan, William B., III,Boarman, William I.. Effects of anthropogenic developments on common raven nesting biology in the west Mojave desert[J]. United States Geological Survey,2007,17(6):1703-1713.
APA Kristan, William B., III,&Boarman, William I..(2007).Effects of anthropogenic developments on common raven nesting biology in the west Mojave desert.ECOLOGICAL APPLICATIONS,17(6),1703-1713.
MLA Kristan, William B., III,et al."Effects of anthropogenic developments on common raven nesting biology in the west Mojave desert".ECOLOGICAL APPLICATIONS 17.6(2007):1703-1713.
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