Ocean and Polar Research

Korea Institute of Ocean Science & Technology (한국해양과학기술원)
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Seasonal Variation of Zooplankton Communities in the Southern Coastal Waters of Korea

남해 연안 동물플랑크톤 군집의 계절변동

  • Moon, Seong-Yong (Department of Biology, College of Natural Sciences Gangnung-Wonju National University) ;
  • Oh, Hyun-Ju (External Research Cooperation Division, NFRDI) ;
  • Soh, Ho-Young (Division of Marine Technology Chonnam National University)
  • 문성용 (강릉원주대학교 자연과학대학 생물학과) ;
  • 오현주 (국립수산과학원 대외협력과) ;
  • 서호영 (전남대학교 해양기술학부)
  • Received : 2010.08.30
  • Accepted : 2010.12.12
  • Published : 2010.12.30
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Abstract

The seasonal variations in the zooplankton community of the southern coastal waters of Korea were investigated seasonally in May, August, November 2005, and February 2006. A total of 74 taxa were sampled, with an average abundance ranging from 2,426~23,793 indiv./$m^3$, among which Noctiluca scintillans predominated. Noctiluca scintillans, Acartia omorii, Acartia erythraea, Paracalanus parvus s. l., Centropages abdominalis, Tortanus forcipatus, and Pseudevadne tergestina were the most abundant species detected. Zooplankton diversity was high around the inner regions during the summer, but it was relatively low in the stations located in the outer regions in the autumn. Non-metric multidimensional scaling (nMDS) revealed significant differences in the structures of the zooplankton community among the three regions. Our results showed that the seasonal variations in zooplankton communities in the southern coastal waters of Korea were attributable to seasonal changes in temperature, salinity, chlorophyll a concentrations, and N. scintillans blooms; additionally, this particularly study area might have been specifically influenced by the appearance of the Tsushima Warm Current.

남해 연안에 출현하는 동물플랑크톤 군집의 계절 변화와 주요 분류군의 변동 양상을 파악하기 위해 2005년 5월부터 2006월 2월까지 사계절 동안 실시하였다. 사계절 동안 출현한 동물플랑크톤은 전체 74개 분류군이 출현하였고, 평균 출현 개체수는 2,426~23,793 indiv./$m^3$ 범위였으며, 이 중 N. scintillans가 가장 우점하는 분류군이었다. 동물플랑크톤 주요 분류군은 N. scintillans, A. omorii, A. erythraea, P. parvus s. l, 십각류 유생, Aidanosagitta crassa, 따개비 유생으로 나타났다. 여름철의 동물플랑크톤의 종 다양성 지수는 내만 해역에서 주로 높게 나타났으며, 가을철에 외만에 위치하는 조사해역에서 낮게 나타났다. 이것은 남해 연안의 동물플랑크톤 출현 개체수 변동이 계절에 따른 수온, 염분과 엽록소-a 농도, N. scintillans의 대량 증식에 따라서 변동할 수 있으며, 또한 계절에 따른 대마난류의 세력확장에 따라서 조절될 수 있음을 시사한다.

Keywords

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