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Macrozoobenthic Communities of the Deep Sea Sediments in the Northeastern Pacific Ocean
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  • Journal title : Ocean and Polar Research
  • Volume 26, Issue 2,  2004, pp.367-376
  • Publisher : Korea Institute of Ocean Science & Technology
  • DOI : 10.4217/OPR.2004.26.2.367
 Title & Authors
Macrozoobenthic Communities of the Deep Sea Sediments in the Northeastern Pacific Ocean
Choi, Jin-Woo; Kim, Dong-Sung; Hyun, Jung-Ho; Lee, Chang-Hoon;
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Macrobenthos were collected at 7 stations located from to with 1o interval along the longitude of using a box corer with sampling area of in July, 1999. In order to see the vertical distribution of macrobenthos in sediments, each subcore sample was divided into 5 layers with 1 cm interval up to 6 cm depth. Each subcore sample was sieved through 0.3 mm mesh screen and fixed with 10% Rose Bengal added formalin. A total of 22 faunal groups in 11 phyla were sampled and the average density was . Foraminiferans comprised 34.8% of total specimens were the most abundant fauna, and followed by nematodes (27.5%), polychaete worms (15.7%), and benthic harpactoid copepods (10.4%). A latitudinal trend was shown in the distribution of macrobenthos; the maximum density of appeared at station N06 and the most poverished community occurred at station N09 with the density of . The density of typical macrofaunal taxa except foraminiferans and nematods was . In the vertical distribution of macrobenthos, more than 70% of macrobenthos occurred in the upper 2 cm layer, and upper 4 cm layer contained about 90% of macrofauna. Polychaete worms consisted of 22 families, and cirratulid and paraonid worms were dominant polychaete species. The prominant feeding guilds of polychaete worms were SDT (surface, descretely motile, tenaculate feeding) and SMX (surface, motile, non-jawed); they comprised more than 50% of polychaete abundance. These feeding guilds of polychaete worms suggests that the deep sea benthos should be well adapted the newly settled deposits from water column, but this should be clarified by the further studies.
macrozoobenthos;deep sea fauna;vertical distribution;feeding guild;latitudinal distribution;
 Cited by
북동 적도 태평양에서 수층 기초 생산력과 심해저 퇴적물내 미생물 생산력과의 상관성,김경홍;손주원;손승규;지상범;현정호;

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