Korean Journal of Environment and Ecology (한국환경생태학회지)

Korean Society of Environment and Ecology (한국환경생태학회)
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Territory Size of Breeding Chinese Sparrowhawks($Accipiter$ $soloensis$) in Korea

붉은배새매($Accipiter$ $soloensis$)의 번식기 세력권 추정

  • Received : 2011.09.16
  • Accepted : 2012.03.13
  • Published : 2012.04.30
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Abstract

The Chinese Sparrowhawk($Accipiter$ $soloensis$) is the most common breeding raptor in Korea, but its spatial use in the breeding season has been poorly documented. Therefore, to estimate the territory and home range sizes of breeding sparrowhawks, six territorial males(four in 2005 and two in 2006) were observed from June to July in Gyeonggi Province, the Republic of Korea. Main perches, which were used repeatedly(more than three times) or where apparent territorial behaviors were observed, were identified and the locations were analyzed by GIS software. According to the 100% Minimum Convex Polygons which were identified from $25.2{\pm}5.3$ perches, Chinese Sparrowhawks occupied $4.62{\pm}0.90$ ha for breeding territories and used $22.57{\pm}5.12$ ha for their home ranges. These estimates showed larger spatially occupied areas than those in one previous report, but this study suggests that Chinese Sparrowhawks intensively use small areas throughout the breeding season. This result also implies that the sparrowhawks have the potential to be significantly affected by any habitat changes and resource exploitation in the small areas(particularly in small rice paddies of 0.6-2.0 ha) which they largely rely on for food. Although this study was based on observations solely for territory size estimations, this study may be worthwhile as preliminary pilot research for Chinese Sparrowhawk conservation, management, and further studies.

붉은배새매($Accipiter$ $soloensis$)는 국내에서 가장 흔히 번식하는 맹금류에 해당함에도 불구하고, 이 종의 번식기 공간이용에 대한 정보는 부족한 실정이다. 붉은배새매의 번식기 세력권과 행동권을 파악하기 위하여 국내에서 번식하는 6쌍(2005년 4쌍, 2006년 2쌍)의 수컷을 6월부터 7월까지 관찰하였다. 이를 통해 수컷이 3회 이상 반복적으로 이용하는 주요 지점과 명확한 세력권 방어 행동을 보이는 지점을 확인하고, 이를 GIS 프로그램으로 분석하였다. 확인된 $25.2{\pm}5.3$개 지점을 중심으로 100% 최소다각형법(minimum convex polygon)을 이용하여 분석한 결과, 붉은배새매의 번식기 세력권은 $4.62{\pm}0.90$ ha, 행동권은 $22.57{\pm}5.12$ ha에 해당하는 것으로 나타났다. 본 연구에서 확인된 붉은배새매의 세력권과 행동권은 비록 기존에 보고된 값보다 넓었으나, 전체 번식기에 걸쳐 이용하는 절대적인 공간 규모가 여전히 작다는 점을 보여준다. 이는 붉은배새매가 먹이를 제공할 수 있는 좁은 서식지, 특히 0.6-2.0 ha에 불과한 논에서 발생할 수 있는 환경 변화나 자원 고갈에도 상당히 취약할 수 있다는 것을 의미한다. 본 연구는 관찰을 통한 세력권 추정에 해당하지만, 붉은배새매의 보전과 관리, 향후 연구를 위한 기초연구로서의 중요성이 있다고 판단된다.

Keywords

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