Korean Journal of Ecology and Environment (생태와환경)

The Korean Society of Limnology (한국수생태학회)
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Oceanization of a Lagoon Through Analysis of Fish Community in the Lagoon Cheongcho, Korea

청초호 어류군집을 통해 본 석호의 해양화

  • Park, Seungchul (Department of Biological Science, Inha University) ;
  • Lee, Kwangyeol (Department of Biological Science, Kangwon National University) ;
  • Yoon, Youngjin (Department of Biological Science, Kangwon National University) ;
  • Choi, Jaeyoon (Nature Environment Division, Wonju Regional Environmental Office) ;
  • Cho, Kanghyun (Department of Biological Science, Inha University) ;
  • Choi, Jaeseok (Institute of Environmental Research, Kangwon National University)
  • 박승철 (인하대학교 생명과학과) ;
  • 이광열 (강원대학교 생명과학과) ;
  • 윤영진 (강원대학교 생명과학과) ;
  • 최재윤 (원주지방환경청 자연환경과) ;
  • 조강현 (인하대학교 생명과학과) ;
  • 최재석 (강원대학교 환경연구소)
  • Received : 2013.01.15
  • Accepted : 2013.03.19
  • Published : 2013.06.30
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Abstract

Analysis of the fish community in the Lagoon Cheongcho, Korea, was investigated in 2008 and in 2012. A total 48 species, belonging to 26 falmilies, were sampled during the period. The dominant species was Tribolodon hakonensis (75.2%), and subdominant species were Acanthogobius flavimanus (5.4%), Pungitius kaibarae (3.1%). The results of the fish ecotypes according to origin of water body was compared by surveyed year, freshwater fish was reduced, whereas those of brackish water and seawater fishes were increased. Moreover, the result of similarity analysis based on species and individuals in five lagoons were divided into 2 major groups based on their similarity, and Lagoon Cheongcho was included group 'A' with Lagoon Gyeongpo, as having a montinous inflow of seawater. Hence, according to the characterization according to the analysis of fish community, Lagoon Cheongcho has lost the characteristics of a lagoon, and oceanization is considerably progressed. Therefore, we are considering the provision of a management strategy for hydrarch succession, as well as continuous research, in order to manage the recovery of essential characteristics of the lagoon ecosystem. Hence, according to the characterization according to the analysis of fish community, Lagoon Cheongcho has lost the characteristics of a lagoon, and oceanization is considerably progressed. Therefore, we are considering the provision of a management strategy for hydrarch succession, as well as continuous research, in order to manage the recovery of essential characteristics of the lagoon ecosystem.

2008년과 2012년에 청초호의 어류군집을 조사한 결과는 다음과 같다. 조사기간 동안 출현한 어류는 총 26과 48종 17,281개체였다. 우점종은 황어(75.2%), 우세종은 문절망둑(5.4%), 잔가시고기(3.1%) 등이었으며, 수체의 기원에 따른 어류의 생태형을 조사연도별로 비교한 결과, 담수어는 감소하였으며 기수어와 해수어는 증가하는 경향을 나타내었다. 또한 다른 석호와 유사도 분석을 실시한 결과 크게 두 그룹으로 나뉘어졌으며, 청초호는 담수의 유입이 적고 지속적으로 해수가 유입되는 경포호와 유사한 그룹 A에 포함되었다. 그러므로 어류군집에 따른 청초호의 상태를 분석한 결과, 청초호는 석호의 특징을 서서히 상실하고 있으며 해양화가 진행되고 있는 것으로 나타났다. 따라서 석호생태계 본연의 특성을 회복하고 관리하기 위해선 지속적인 연구 및 습성천이에 따른 관리기준을 마련해야 할 것으로 생각된다.

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References

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