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A Study on the Biotope Structure of Wintering Place and Behavior Characteristics of Anser fabalis in Cheongna Area, Incheon Free Economic Zone, Korea  

Park, Byeong-Ku (Incheon Metropolitan City)
Han, Bong-Ho (Dept. of Landscape Architecture, College of Urban Science, Univ. of Seoul)
Lee, Kyong-Jae (Dept. of Landscape Architecture, College of Urban Science, Univ. of Seoul)
Kwak, Jeong-In (Environmental Ecosystem Research Foundation)
Im, Seong-Soo (Dept. of Landscape Architecture, Graduate School, Univ. of Seoul)
Publication Information
Korean Journal of Environment and Ecology / v.27, no.3, 2013 , pp. 305-315 More about this Journal
Abstract
This study is aimed to provide the preliminary data for conservation and management of wintering site for Anser fabalis population in Cheongna Area, Incheon Free Economic Zone, Korea through analyzing the relationship between the biotop structure of its wintering site and behavior characteristics. The main types (size and ratio) of the biotope in Cheongna Area, Incheon Free Economic Zone are reed wetlands ($6,093,762m^2$, 47.8%), rice fields without rice straw ($2,927,916m^2$, 23.0%), and rice fields with rice straw ($1,915,655m^2$, 15.0%). According to the survey carried on 13th Feb., 2013, total 33 species and 6, 535 individual birds were observed and among of them, the dominant bird was Anser fabalis showing 5,128 indiviuals, 78% of total population. As the result of analyzing the migratory route of Anser fabalis, the bird moved from roosting site to foraging site before and after sunrise and from feeding site to roosting site before and after sunset. According to the analysis of interrelation between habitat characteristics and biotope types of the bird, population density was the highest in reed wetlands among habitat types and individual appearance was the highest in water-filled rice field melting ice. The bird ate the roots and bulb of hydrophytes in reed wetlands and showed various behaviors like eating dropped grains, resting and sleeping in water-filled rice fields and eating dropped grains and resting in rice fields with and without rice straw. It is shown that the number of Anser fabalis appearing in rice fields is depended on the presence of dropped grains than types of rice field.
Keywords
REED WETLAND; RICE STRAW; FLOODED RICE FIELD; POPULATION;
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