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http://dx.doi.org/10.13047/KJEE.2015.29.6.850

Nest Characteristics of the Chinese Egret (Egretta europhotes) in South Korea  

Kang, Jung-Hoon (National Research Institute of Cultural Heritage, Cultural Heritage Administration)
Kim, In-Kyu (Korea Institute of Environmental Ecology)
Lee, Hansoo (Korea Institute of Environmental Ecology)
Kim, Dal-Ho (Korea Institute of Environmental Ecology)
Rhim, Shin-Jae (School of Bioresource and Bioscience, Chung-Ang University)
Lee, Joon-Woo (Dept. of Environment & Forest Resources, Chungnam National Univ.)
Publication Information
Korean Journal of Environment and Ecology / v.29, no.6, 2015 , pp. 850-857 More about this Journal
Abstract
This study was aimed to identify the characteristics of nest and breeding site conditions of Chinese Egret (Egretta europhotes) that breed in the uninhabited islets of the western coast of South Korea. It is expected that the information collected through this study can contribute to providing basic information required when building and managing artificial nests in their natural breeding habitats. Chinese Egrets make their nests in the shrub layers of Long Leaf Elaeagnus (Elaeagnus macrophylla), Arrow Bamboo (Pseudosasa japonica), and Baby Brier (Rosa multiflora). A total of 50 breeding nests of Chinese Egret were investigated in June and July 2013, with area-wise distribution as follows: Seomando (11 nests), Hwangseodo (14 nests), Mokdo (10 nests), and Napdaekiseom (15 nests). Vegetation coverage (cover, %), height from the ground to the top (height, cm), thickness from top to bottom of the nest (thickness, cm), reuse period, major axis (cm), minor axis (cm), and depth (cm) of each nest were measured. According to the results of the study on the nest characteristics of 4 breeding groups, the nests in Hwangseodo had the highest coverage, the nests in Mokdo were built in the highest places, the nests in Napdaekiseom showed the longest reuse period, and the nests in Mokdo had the greatest depth. The differences in height and reuse period were significant between Mokdo and Napdaekiseom. Moreover, there were significant differences in reuse period and depth between Seomando and Hwangseodo. There were significant differences in cover, minor axis, and depth between breeding groups that built nests on Arrow Bamboo (Mokdo and Napdaekiseom) and Baby Brier (Seomando and Hwangseodo). Nest characteristics of Chinese Egret were generally similar, while some variables showed different values for different breeding groups.
Keywords
COVER; HEIGHT; THICKNESS; SEOMANDO; NAPDAEKISEOM;
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