Ocean and Polar Research

  • 제24권4호
  • /
  • Pages.407-417
  • /
  • 2002
  • /
  • 1598-141X(pISSN)
  • /
  • 2234-7313(eISSN)
한국해양과학기술원 (Korea Institute of Ocean Science & Technology)
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독도 주변에서 춘계와 추계의 동물플랑크톤 종 조성과 개체수

Species Composition and Abundance of Zooplankton Community in Spring and Autumn around Dokdo

  • 강정훈 (한국해양연구원 해양자원연구본부) ;
  • 김웅서 (한국해양연구원 해양자원연구본부) ;
  • 심재형 (서울대학교 지구환경과학부)
  • Kang, Jung-Hoon (Marine Resources Laboratory, KORDI) ;
  • Kim, Woong-Seo (Marine Resources Laboratory, KORDI) ;
  • Shim, Jae-Hyung (School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University)
  • 발행 : 2002.12.31
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초록

Species composition and abundance of zooplankton were investigated around Dokdo in the East/Japan Sea in autumn 1999 and spring 2000. Vertical and horizontal hauls of a bongo net ($300{\mu}m$ mesh size, 60cm diameter) were made to collect zooplankton sample. Surface temperature and salinity ranged from $24.2^{\circ}C\;to\;25.1^{\circ}C$, and from 32.9psu to 33.2psu in September 1999, respectively. In May 2000, surface temperatures were $13.9^{\circ}C\;and\;14.2^{\circ}C$ at stations of A1 and A8, and salinity was 34.5psu at both stations. Zooplankton community was dominated by copepods which comprised 61% (September) and 60% (May) of total numerical abundance, respectively. The next dominant groups were appendicularians (11%) and chaetognaths (9%) in September 1999, and other crustaceans (27%) and appendicularians (4%) in May 2000. The 15.7% (September) and 23.2% (May) of copepods were in the juvenile stage of copepodites. The most dominant copepods were Oncaea media (10.4%) and Clausocalanus sp. (8.2%) which preferred warm water in September. In contrast, cold-water copepods such as Pseudocalanus minutus (9.4%) and Metridia pacifica (8.0%) were dominant in May. The results of cluster analysis based on Bray-Curtis index showed that zooplankton community were classified into two groups which represented different water mass. The average abundance of zooplankton in September was 2.1 times higher than that in May, and species number of them in September outnumbered that in May by 29 species. Zooplankton community varied in associated with a characteristic of warm waters which affected marine ecosystem differently in the study area depending on seasons.

키워드

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피인용 문헌

  1. Long-term variation of zooplankton around Dokdo in the East Sea vol.17, pp.9, 2016, https://doi.org/10.5762/KAIS.2016.17.9.422