꺽저기 Coreoperca kawamebari와 꺽지 C. herzi의 공서 하천인 보성강에서 환경 차이에 따른 두 종의 분포와 어류 군집 구조

분야
자연과학 > 지질
저자
김석현 ( Seog Hyun Kim ) , 이상헌 ( Sang Hun Lee ) , 이완옥 ( Wan Ok Lee ) , 조강현 ( Kang Hyun Cho )
발행기관
한국하천호수학회(구 한국육수학회)
간행물정보
생태와 환경 2013년, 제46권 제3호, 367~379페이지(총13페이지)
파일형식
08802012.pdf [무료 PDF 뷰어 다운로드]
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    영문초록
    The distribution of Coreoperca kawamebari was known to be restricted to the Tamjin River and several small streams flowing into the southern part of the West Sea, while C. herzi was widely distributed throughout South Korea except the areas inhabited by C. kawamebari: the two species were known to be allopatric. However, we found that both species were sympatric in the Boseong River, a tributary of the Seomjin River, and the Jiseok Stream, a tributary of the Yeongsan River. Local-scale distribution of the two Coreoperca species, fish assemblages, and environmental variables were surveyed to investigate effects of environmental factors on fish community structures in the Boseong River. Rank abundance distribution of fish community at the study sites indicated that fish species diversity and distribution pattern of the two Coreoperca species were closely related to habitat diversity. The result of canonical correspondence analysis showed that C. kawamebari was distributed in pool areas while C. herzi was found in the areas with higher water velocity and boulder substrate. These results suggested that species diversity of fish community decreased and only one of the two Coreoperca species inhabited at the sites with less diverse habitat, but on the other hand, high habitat diversity increased species diversity and allowed the two species to coexist.
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