한국환경생태학회지 (Korean Journal of Environment and Ecology)

  • 제23권3호
  • /
  • Pages.250-257
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  • 2009
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  • 1229-3857(pISSN)
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  • 2288-131X(eISSN)
한국환경생태학회 (Korean Society of Environment and Ecology)
권호 표지

한강하구에 도래하는 재두루미의 서식지 이용 현황

Wintering Habitat Use of white-naped Cranes Grus vipio in Han River Estuary, Korea

  • 발행 : 2009.06.30
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초록

2006년부터 2008년까지 월동기(10월$\sim$3월)동안 한강하구에 도래하는 재두루미의 서식지 이용현황을 조사하였다. 월동개체군은 평균 106.6개체(SD=27)가 관찰되었으며, 2008년 1월초에 최대 140개체가 관찰되었다. 재두루미는 농경지와 갯벌을 같이 이용하였으며, 월동기 동안농경지와 갯벌의 이용율에 유의한 차이를 보이지 않았다(Mann-Whitney test. p=0.4). 시기별 이용율은 월동초기에는 농경지의 이용율이 높았으며, 월동후기에는 갯벌의 이용율이 높았다(Maul-Whitney test. 월동초기: p<0.01, 월동후기: p<0.01). 월동중기에는 농경지와 갯벌의 이용율에 차이가 없었다. 농경지는 홍도평, 평동, 이화동, 장항논을 모두 이용하였으며, 홍도평의 이용율이 높았다. 각 농경지간 이용율은 월동초기와 중기에 유의한 차이를 보였다(Kruskal-wallis test. p<0.05). 갯벌은 김포대교$\sim$누산리 구간을 이용하였으며, 김포대교$\sim$일산대교 상류구간의 이용율이 높았다. 각 구간별 이용율은 시기별로 유의한 차이가 있었다(Kruskal-wallis test. p<0.01).

This study was conducted to investigate the habitat use of White-naped Cranes Grus vipio in Han river estuary during the wintering period from 2006 to 2008 (October$\sim$March). The average numbers of wintering White-naped Cranes were 106.6$\pm$21.7 (Mean$\pm$SD) individuals, and the highest number of 140 individuals were recorded in the early January, 2008. The wintering habitat use of White-naped Cranes between rice field and mudflat was not significantly different (Mann-Whitney test. p=0.40) during the wintering period. However, White-naped Cranes spent more time on the rice field in the early winter (p<0.01), and on the mudflat in the late winter(p<0.01). There was not a difference of the habitat use rate on middle winter. White-naped cranes used four different sites of rice field: Hongdopyoung, Pyoungdong, Ihwadong and Janghang rice fields. Among them, Hongdopyoung was the main foraging site. There was significant differences of habitat use ratio in the early and mid winter ((Kruskal-wallis test. p<0.01). White-naped Cranes used mudflat area from Gimpo Daegyo to Nusanri of Han river estuary. Especially, they preferred four sites from Gimpo Daegyo to Ilsan Daegyo more than the other sites. Habitat use rate of mud flats were significantly different among each site during the wintering period (Kruskal-wallis test. p<0.01)

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