한국수산과학회지 (Korean Journal of Fisheries and Aquatic Sciences)

한국수산과학회 (The Korean Society of Fisheries and Aquatic Science)
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심해 극한 환경에서의 중형저서동물 군집

Meiobenthic Communities in Extreme Deep-sea Environment

  • 김동성 (한국해양연구원 해양생물자원연구본부) ;
  • 민원기 (한국해양연구원 해양생물자원연구본부)
  • Kim Dong-Sung (Marine Living Resources Research Division, Korea Ocean Research & Development Institute) ;
  • Min Won-Gi (Marine Living Resources Research Division, Korea Ocean Research & Development Institute)
  • 발행 : 2006.05.01
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초록

The spatial patterns of meiobenthic communities in deep-sea sediment were examined. Sediment samples for analyzing of meiobenthic community structure were collected using a remote operated vehicle (ROV), multiple corer TV grab at 20 stations at five sites. In all, 15 meiofauna groups were recorded. Nematodes were the most abundant taxon. Benthic foraminiferans, harpacticoid copepods, polychaetes, and crustacean naupii were also dominant groups at all sites. The total meiofauna density at the study sites varied from 49 to 419 ind./$10cm^2$. The maximum density was recorded at a site located in Challenger Deep in the Mariana trench where simple benthic foraminifera with organic walls flourish. These distinctive taxa seem to be characteristic of the deepest ocean depths. Active hydrothermal sediments contain up to 150 harpacticoid copepods per $10cm^2$ of sediment. In a inactive ridge sediments, devoid of macrofaunal organisms:, the abundance of harpacticoid copepods never exceeded 15 ind./$10cm^2$. Multivariate analysis (multidimensional scaling) revealed significant differences in community structure among the three regions; near an active hydrothermal vent, in the deepest ocean depths and at typical deep-sea bed sites.

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피인용 문헌

  1. Meiofauna abundance and community patterns along a transatlantic transect in the Vema Fracture Zone and in the hadal zone of the Puerto Rico trench 2018, https://doi.org/10.1016/j.dsr2.2017.12.021