연구논문 : 한국 서해안 상괭이 (Neophocaena phocaenoides)의 분포와 풍도
분야
수해양 > 수산생물학
저자
장창익 ( Jang Chang Ig ) , 박겸준 ( Park Gyeom Jun ) , 김장근 ( Kim Jang Geun ) , 손호선 ( Son Ho Seon )
발행기관
한국수산과학회(구 한국수산학회)
간행물정보
한국수산과학회지 2004년, 제37권 제2호, 129~136페이지(총8페이지)
파일형식
05905657.pdf [무료 PDF 뷰어 다운로드]
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    영문초록
    Visual line-transect surveys for the finless porpoise (Neaphocaena phocaenoides) were conducted in the offshore of the west coast of Korea (WCOK) from 18 April to 17 May 2001 (34`18` to 37°18`N, 123`00` to 126`00`E), and in the inshore of the west coast of Korea (WCIK) from 29 July to 2 August 2003 (35`17` to 36°17`N, 126`00` to 126°25`E). A total of transect supey efforts werf 810.27 n.m. in 2001 and 216.09 n.m. in 2003, which cover a survey areas of 23,012 n.m. and 1,550 n.m. , respectively. There were 76 and 24 sightings for the finless porpoise during the surveys in the WCOK (2001) and the WCIK (2003), respectively. More than 80% of the finless porpoise occurred near the coast within 15 n.m. from the land. Porpoise were observed mainly in a depth range from 20 to 50 m (78%). Few porpoise were observed in a depth shallower than 10 m or deeper than 60 m. The hazard-rate model, truncated at the largest 5% distance, showed the best fitting from the frequency distribution of perpendicular distance of the finless porpoise sighted from the trackline in the WCOK (2001), while the uniform model showed the best fitting from in the WCIK (2003). Abundance of finless porpoises were estimated to be 58,650 individuals (95% CI=34,961-98,389) in the WCOK (2001) and 1,571 individuals (95% CI=881-2,800) in the WCIK (2003), respectively.
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