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Spatial Distribution of Feeding Site and the Relationship between Density and Environmental Factors(Roosting Site, Road and Residence) of Cranes in Cheorwon Basin, Korea  

Yoo, Seung-Hwa (Dept. of Interdisciplinary Program in Landscape Architecture, Graduate School of Environmental Studies, Seoul National University)
Kwon, Hyuk-Soo (Dept. of Interdisciplinary Program in Landscape Architecture, Graduate School of Environmental Studies, Seoul National University)
Park, Jong-Jun (Dept. of Interdisciplinary Program in Landscape Architecture, Graduate School of Environmental Studies, Seoul National University)
Park, Chong-Hwa (Graduate School of Environmental Studies, Seoul National University)
Publication Information
Korean Journal of Environment and Ecology / v.25, no.4, 2011 , pp. 516-525 More about this Journal
Abstract
We studied the influence certain environmental factors (proximity of roosting site, roads, and residential areas) have on the spatial distribution of cranes in the Cheorwon, Korea. Using a range finder and GPS, data were collected from January to February 2007 and were subsequently evaluated with ArcGIS. The size of the cranes' wintering habitat was estimated to be 7$76.9km^2$. Five hundred and fifty-five flocks of cranes were observed and detailed distributions were collected. Feeding distribution of the cranes showed clustered distribution, however, no tendencies of spatial autocorrelation were apparent. Adjacent regions with paved roads and residences showed lower densities than other areas. Distances at which paved roads and residential areas induced changes in feeding flock densities were 1500m and 1750m, respectively. Feeding flock density decreased with increased distance from roosting site. Feeding flock density of the two crane species did not increase as distance from roads increased, however, the density of individuals showed a significant increasing tendency with increased distance from roads. In both species, density of feeding flocks and individuals significantly increased with increasing distance from residential areas. In Red-crowned Cranes, the density of feeding flocks and individuals significantly decreased with increasing distance from roosting site, however, in the case of White-naped Cranes, there was an even distribution in density of feeding flocks and individuals.
Keywords
FEEDING SITE; HUMAN IMPACT; ROADSIDE EFFECT; FEEDING DISTRIBUTION; FACTORS OF HABITAT SELECTION;
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Times Cited By KSCI : 2  (Citation Analysis)
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