Arid
DOI10.1002/ecs2.1532
Influence of food subsidies on the foraging ecology of a synanthropic species in protected areas
West, Elena H.1; Henry, William R.2; Goldenberg, William3; Peery, M. Zachariah1
通讯作者West, Elena H.
来源期刊ECOSPHERE
ISSN2150-8925
出版年2016
卷号7期号:10
英文摘要

The expansion of many synanthropic species is linked to changes in the abundance and distribution of human-derived foods, and understanding how food subsidies influence the foraging ecology of synanthropes can facilitate reducing impacts to rare species. We combined stable isotope analyses and radiotelemetry information to characterize space-use and dietary patterns in Steller’s jays (Cyanocitta stelleri), a known nest predator of marbled murrelets, sampled at both campground and forest sites in California state parks. We classified jays into four groups based on patterns of space use: (1) campground (jays captured in campgrounds that predominantly used these areas), (2) periphery (jays captured in campgrounds that commonly used adjacent forests), (3) intermediate (jays captured at forest sites that made long-distance movements between forests and campgrounds), and (4) forest (jays captured and only detected in forests). In the most heavily visited park, human foods comprised more than half of the diet of campground jays based on stable isotopes; moreover, campground jays consumed a greater proportion of human foods than periphery or intermediate jays, which both consumed more human foods than forest jays. Campground jays exhibited a functional response to human foods as park visitation increased, and breeding individuals preferentially provisioned their young with human-derived foods. Based on space-use patterns of intermediate jays, we estimated that the "ecological footprint" of campgrounds extended 2 km beyond their spatial footprint. Thus, the impacts of seemingly spatially constrained human recreational activities can have spillover effects on animal communities at relatively broad spatial scales within protected areas.


英文关键词food subsidies foraging ecology home range marbled murrelet protected areas Steller’s jay synanthropic species
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000387216300058
WOS关键词COMMON RAVEN PREDATION ; FEEDING-TERRITORY SIZE ; ISOTOPE MIXING MODELS ; STABLE-ISOTOPES ; MARBLED MURRELET ; DISCRIMINATION FACTORS ; COMMUNITY STRUCTURE ; DESERT TORTOISES ; REDWOOD FORESTS ; NESTING HABITAT
WOS类目Ecology
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/192505
作者单位1.Univ Wisconsin, 1630 Linden Dr, Madison, WI 53706 USA;
2.Univ Calif Santa Cruz, 1156 High St, Santa Cruz, CA 95060 USA;
3.Humboldt State Univ, 1 Harpst St, Arcata, CA 95521 USA
推荐引用方式
GB/T 7714
West, Elena H.,Henry, William R.,Goldenberg, William,et al. Influence of food subsidies on the foraging ecology of a synanthropic species in protected areas[J],2016,7(10).
APA West, Elena H.,Henry, William R.,Goldenberg, William,&Peery, M. Zachariah.(2016).Influence of food subsidies on the foraging ecology of a synanthropic species in protected areas.ECOSPHERE,7(10).
MLA West, Elena H.,et al."Influence of food subsidies on the foraging ecology of a synanthropic species in protected areas".ECOSPHERE 7.10(2016).
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