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Responses of Benthic Animals in Spatial Distribution to the Sedimentary Environments on the Deep-sea Floor, the Clarion-Clipperton Fracture Zone, Northeastern Pacific Ocean
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  • Journal title : Ocean and Polar Research
  • Volume 26, Issue 2,  2004, pp.311-321
  • Publisher : Korea Institute of Ocean Science & Technology
  • DOI : 10.4217/OPR.2004.26.2.311
 Title & Authors
Responses of Benthic Animals in Spatial Distribution to the Sedimentary Environments on the Deep-sea Floor, the Clarion-Clipperton Fracture Zone, Northeastern Pacific Ocean
Park, Heung-Sik; Chi, Sang-Bum; Paik, Sang-Kyu; Kim, Woong-Seo;
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Relationships between sedimentary environments and abundance of benthic animals were examined on the deep-sea floor, the Clarion-Clipperton Fracture Zone, in the northeast equatorial Pacific Ocean. Specimens were collected using a box corer at 8 stations by sieving through 0.3 mm mesh screen. Sediments showed finer grain size ranged from 5.63 to , 83.1% of mean porosity, 1.81 kPa of mean shear strength and organic carbon content in sediment ranged from 0.97 to . Manganese nodules covered on the bottom layer from 4 to 57% of coverages. A total of 26 faunal groups in 6 phyla was sampled and comprised 1,467 individuals. Mean biomass were calibrated to 0.5 gWWt/. Small-sized animals including foraminiferans and nematods were dominated among the faunal group which comprised 49.1% (892 ind.) and 11.5% (320 ind.), respectively. In SPI-analysis, vertical bio-disturbance marks were not observed except to Beggiatoa-type bacterial mats. As the results of relationship between environments and benthos, abundance of benthic animals, especially nematode, showed only a negative correlation to the coverage of nodules, and any other sedimentary factors analyzed in this study were rarely affected to the spatial distribution of benthic animals.
benthic animal;deep-sea floor;abundance;spatial distribution;
 Cited by
북동 적도 태평양에서 수층 기초 생산력과 심해저 퇴적물내 미생물 생산력과의 상관성,김경홍;손주원;손승규;지상범;현정호;

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