한국환경생태학회지 (Korean Journal of Environment and Ecology)

  • 제23권1호
  • /
  • Pages.41-49
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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

두루미류의 취식무리 크기 및 구성과 도로에 대한 회피 - 도로의 영향 vs 통행에 의한 영향? -

Research on the Size, Formation and Tendency to Evade the Road of the Feeding Flocks of Crane Species - Centering on the Effect of Road vs. Traffic Condition -

  • 발행 : 2009.02.28
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초록

두루미류의 취식무리 크기 및 구성과 도로 유형별, 취식무리 규모에 따른 분포거리 연구를 월동기인 2005년 12월에서 2006년 2월까지 총 8회 실시하였다. 두루미와 재두루미의 취식무리는 주로 $2{\sim}4$개체로 구성된 무리였다. 두루미와 재두루미 모두 혼종무리 보다는 단일종의 취식무리가 많았다. 두루미와 재두루미간 취식무리 크기별 비율은 유의한 차이가 있었다. 두루미의 포장도로(PR)와의 평균거 리는 비포장농로(UPR), 포장농로(PFR), 비포장농로(UPFR) 도로와의 거리에 비하여 멀었다. 재두루미의 경우 도로로부터의 이격거리는 농로로부터의 거리와 차이가 있었다. 두루미와 재두루미 종간 도로유형별 이격거리는 포장도로에서만 유의미한 차이가 있었다. 이 결과는, 두루미류가 차량 출입이 잦은 도로를 차량 출입이 낮은 농로에 비하여 선호하지 않는 것을 보여준다. 포장도로에서 5개체 이상의 두루미 취식무리는 전체 취식무리와 5개체 미만의 취식무리에 비하여 도로로부터 이격거리가 멀었다. 재두루미는 5개체 이상의 취식무리가 5개체 미만의 취식무리에 비하여 포장도로 및 포장농로와 비포장농로에서 이격거리가 멀었으며, 비포장도로에서는 무리크기에 따른 이격거리의 차이가 없었다. 결과적으로, 무리의 크기가 큰 경우 방해요인에 대한 영향이 일부 더 크게 나타났다. 이러한 결과는 두루미류의 큰 취식무리가 주변을 감시하는 효율이 무리크기가 작은 경우보다 높은 것과 관련이 있을 것으로 보인다.

This research conducted a survey on the feeding crane's size, formation and distribution distance subsequent to road pattern and feeding flock's size during the wintering season eight times at the Cheolwon basin in Korea from December 2005 until February 2006. The survey results are as follows: First, the feeding flocks of the Red-crowned and White-naped Crane were found to mainly consist of two to four individuals. Mono-specific feeding flocks were more identified than hetero-specific feeding flocks in both Red-crowned and White-naped Cranes. There existed a significant difference in the ratio by size between the feeding Red-crowned and White-naped Cranes. The crane's average distribution distance from the paved road was much farther than from the unpaved road, paved farm road and unpaved farm road. In case of the white-naped crane, there was a difference in its distance length from between the road and farm road and there existed a significant difference only in the paved road in the distance length by road pattern between these two bird species[Red-crowned and White-naped Crane]. Such a result indicates that crane species don't prefer the road with frequent vehicular traffic to the road with low vehicular traffic. 5 or more individuals of feeding flocks of the Red-crowned Crane were located at a farther distance length from the paved road comparing to less than 5 individuals of the whole feeding flocks and less than 5 individual feeding flocks. 5 or more individuals of feeding flocks of the White-naped Crane were located at a farther distance length from the paved road, paved farm road and unpaved farm road than less than 5 individuals of feeding flocks of the White-naped Crane; however, there existed no difference in distance length subsequent to their group size. Conclusively, it was found out that the flocks with a larger size were more greatly affected by interrupting factors. Considering such results, there seems to be a more relation to the fact that larger size feeding flocks of crane species have a higher efficiency in the lookout for their surroundings.

키워드

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