Korean Journal of Environment and Ecology (한국환경생태학회지)

Korean Society of Environment and Ecology (한국환경생태학회)
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Movements and Home-range of Mallards by GPS-Mobile based Telementary (WT-200) in Korea

야생동물위치추적기(WT-200)를 이용한 청둥오리의 이동거리 및 행동권 연구

  • Received : 2014.10.05
  • Accepted : 2014.12.09
  • Published : 2014.12.31
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Abstract

Mallard (Anas platyrhynchos) is the abundant winter visitor in South Korea. Mallard migrates long distances between Russian Siberia and Korea. This species prefers a rice paddy area as their winter habitat. We captured birds using cannon-net, and attached the GPS-Mobile phone based Telemetry(WT-200) on Seven Mallards in the winter of 2011~2013. We were monitored wintering home-range and movement distance. We analyzed the tracking location data using ArcGIS 9.0 and calculated Kernel Density Estimation (KDE) and Minimum Convex Polygon (MCP). The average home-range in the wintering ground by MCP was $118.8km^2$(SD=70.1, n=7)and the maximum home-rang was $221.8km^2$ and the minimum was $27.7km^2$. Extents of home-range by KDE were $60.0km^2$(KDE 90%), $23.0km^2$(KDE 70%) and $11.6km^2$(KDE 50%). Mallard moved an average of 19.4 km from start site(attach to WT-200 site), maximum moved was 33.2 km and minimum moved was 9.4 km. The average distance of 0.8 km between GPS fixed point(range 0.2~1.6 km), maximum moved was 19.7 km. Mallard moved a very short distance in wintering season and showed a very high water-dependent trends in wintering site.

청둥오리는 대표적인 한국내 월동 수조류로 넓은 농경지를 월동지로 이용한다. 한국의 중부지역에 위치한 만경강 하류지역에서 청둥오리 월동 행동권 및 월동지에서 이동거리를 파악하고자 하였다. 2011-2013년 월동기에 Cannon-net을 이용하여 포획된 청둥오리 7개체에 GPS-이동통신 시스템을 기반으로 하는 야생동물위치추적장치(WT-200)를 부착하였다. 청둥오리 행동권 분석은 GIS용 SHP 파일과 ArcGIS 9.0 Animal Movement Extension을 이용하였으며, 커널밀도측정법(Kernel Density Estimation : KDE)과 최소볼록다각형법(Minimum Convex Polygon Method : MCP)을 이용하여 분석하였다. 청둥오리 행동권은 최소볼록다각형법(MCP)에 의해서 $118.8km^2$(SD=70.1, n=7) 이었으며, 커널밀도측정법(KDE)으로는 $60.0km^2$(KDE 90%), $23.0km^2$(KDE 70%) and $11.6km^2$(KDE 50%)이었다. 야생동물위치추적장치(WT-200) 부착지점으로부터 이동거리는 평균 19.4km이었으며, 최대이동거리는 33.2km, 최소이동거리는 9.4km이었다. GPS좌표가 획득된 정점간 거리는 평균 0.8km이었으며, 정점간 이동거리는 최소 6.5km에서 최대 19.7km이었다. 청둥오리는 월동기 동안 매우 짧은 거리를 이동하였으며, 월동지에서 수계 의존성이 매우 높은 경향을 보였다.

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