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• W2013995893 abstract "본 연구에서는 부산 신항 공사 지역 주변 해역의 총 16개 지역에서 2005년부터 2011년까지 분기별로 매년 4회씩 수달의 배설물을 수집하여 배설물 내 생물 잔해 즉 먹이의 종류를 알아보고, 신항 개발이 수달의 섭식 변화에 미치는 영향에 대해서 조사하였다. 그 결과, 수달은 주로 어류를 섭취하지만 갑각류와 복족류 등도 소수 섭취하는 것이 밝혀졌고, 숭어목이 수달의 주 먹이임이 밝혀졌다. 한편 어류는 모든 계절에 출현했지만 대부분의 어목의 출현 빈도와 어획량이 계절별로 매우 유사한 점으로부터, 수달이 섭취하는 어류의 양은 이 지역에 서식하는 어류의 양과 매우 밀접한 관련이 있음이 시사되었다. 한편 배설물에 출현한 대부분의 어류, 갑각류 및 복족류의 출현 빈도가 2010년 이후에 감소했는데, 이는 공사에 의해서 수달의 먹이가 감소했고, 가까운 장래에 수달의 개체 수가 감소할 수 있음을 시사한다. 이러한 추론은 2010년 이후 수달의 배설물 수가 감소했고, 최근에 이 지역의 어획량이 급감했고, 수질 오염도 증가했다는 연구들로부터 뒷받침된다. The aim of the study is to investigate the food habits of the Eurasian otter, Lutra lutra, and to examine any effects of the construction of the Busan New Port (BNP) on the prey. The frequencies and bulk estimate ratios of the biological debris, taken from spraints collected seasonally during the period from 2005 to 2011 at 16 areas, were analyzed. As the results, it was demonstrated that otters prey mainly on fish but occasionally on crustaceans and gastropods, etc., and the Mugiliformes was the most preferred fish. Although fish debris was observed throughout the season, it was suggested that the amount of fish eaten by the otter seemed to be associated with the amount of fish inhabiting the study area, judging from the striking similarities in the pattern of seasonal variations in each order of the fish between the frequency from the spraints and the fish catch. On the other hand, the frequencies of most of the fish, crustaceans, and gastropods from the spraints decreased from 2010, indicating the decrease of the amount of the prey by the construction of BNP and the strong possibility of the decrease in the number of otters in the near future. This is supported by the other studies, such as one showing a sudden decrease in the number of spraints since 2010, recent decrease in the fish catch, and the increase of marine pollution at this study area." @default.
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• W2013995893 date "2012-06-30" @default.
• W2013995893 modified "2023-10-16" @default.
• W2013995893 title "A Study on Food Habits of the Otter, Lutra lutra, and Effects of Construction of the Busan New Port on its Prey" @default.
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• W2013995893 doi "https://doi.org/10.5352/jls.2012.22.6.736" @default.
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