Korean Journal of Environment and Ecology (한국환경생태학회지)

Korean Society of Environment and Ecology (한국환경생태학회)
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Home Range of Juvenile Chinese Egrets Egretta eulophotes during Post-fledging Stage in Chilsan Archipelago, Republic of Korea

칠산도 노랑부리백로 유조의 이소 후 하절기 행동권

  • Son, Seok-Jun (National Research Institute of Cultural Heritage, Cultural Heritage Administration) ;
  • Oh, Jung-Woo (National Research Institute of Cultural Heritage, Cultural Heritage Administration) ;
  • Hyun, Bo-Ra (National Research Institute of Cultural Heritage, Cultural Heritage Administration) ;
  • Kang, Jung-Hoon (National Research Institute of Cultural Heritage, Cultural Heritage Administration)
  • 손석준 (문화재청 국립문화재연구소) ;
  • 오정우 (문화재청 국립문화재연구소) ;
  • 현보라 (문화재청 국립문화재연구소) ;
  • 강정훈 (문화재청 국립문화재연구소)
  • Received : 2021.01.26
  • Accepted : 2021.02.25
  • Published : 2021.04.28
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Abstract

Understanding the migration patterns and habitats of juvenile birds during the post-fledging stage is very important for conservation and management of individuals. The Chinese Egret is an internationally protected species. During the wintering season, they inhabit South-East Asia, such as the Philippines, Malaysia, and Taiwan, and breed in China, Russia, and uninhabited islands on the west coast of Korea. IIn this study, we attached a GPS telemetry tracking device to six juvenile Chinese Egrets breeding on Chilsan Archipelago in 2018 and 2019 to identify habitats by analyzing the home range during the post-fledging stage in the summer season. The individual CE1801 moved north and then returned to the Yeonggwang Baeksu tidal flat area, and CE1802 and CE1803 migrated north and inhabited Taean-gun. In 2019, CE1901 showed a similar pattern to CE1801, and CE1902 migrated southward to the Wando-gun area, while CE1903 moved south to the Sinan-gun area then returned to the Yeonggwang Baeksu tidal flat area, showing KDE 50%. The study results confirmed that the Chinese Egret moved broadly around the flat tidal area on the west coast to find a stable habitat during the post-fledging stage. Efforts to protect the habitat, such as limiting the development of this area and restricting human access, are necessary.

번식지에서 이소하여 분산한 유조의 이동 패턴과 서식지를 파악하는 것은 개체 보전과 관리를 위해 매우 중요하다. 노랑부리백로는 국제적인 보호종으로 필리핀, 말레이시아, 대만 등지에서 월동하며, 중국, 러시아, 우리나라 서해 무인도서에서 번식한다. 본 연구에서는 2018년도와 2019년도에 영광 칠산도에서 번식하여 이소한 노랑부리백로 유조 총 6개체를 대상으로 야생동물위치추적장치를 부착하여 이소 후 하절기 동안 이동 경로 및 행동권 분석을 통해 주요 서식지 이용 양상을 파악하였다. 2018년도에 번식한 노랑부리백로 유조 3개체 중 CE1801 개체는 이소 후 북상을 하다가 다시 영광 백수 갯벌 지역으로 회귀하여 서식하였으며, 나머지 CE1802, CE1803 개체는 태안 지역으로 북상하여 서식하였다. 2019년도의 경우 CE1901 개체는 CE1801 개체와 유사한 패턴을 보였으며, CE1902 개체는 완도 지역으로 남하하여 서식하였고, CE1903 개체는 신안 지역으로 남하하다가 다시 영광 백수 갯벌 지역으로 회귀하여 핵심 행동권을 보였다. 본 연구에서 노랑부리백로 유조는 하절기 동안 안정적인 서식지를 찾기 위해 서해안 갯벌 지역을 중심으로 폭 넓게 이동을 하였다. 향후 노랑부리백로 유조가 이용하는 핵심 서식지에 대해 개발과 출입을 제한하는 등 서식지 보호를 위한 노력이 필요하다.

Keywords

Acknowledgement

본 연구는 문화재청 국립문화재연구소 '천연기념물(동물) 증식·보존 연구' 과제의 지원을 받아 수행되었으며(과제번호: NRICH-2105-A14F-1), 야외조사에 도움을 주신 모든 분께 진심으로 감사드립니다

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