Responses of benthic animals in spatial distribution to the sedimentary environments on the deep-sea floor, the Clarion-Clipperton Fracture Zone, northeastern Pacific Ocean SCOPUS KCI

Title
Responses of benthic animals in spatial distribution to the sedimentary environments on the deep-sea floor, the Clarion-Clipperton Fracture Zone, northeastern Pacific Ocean
Author(s)
Park, H.-S.; Chi, S.-B.; Paik, S.-K.; Kim, W.-S.
KIOST Author(s)
Park, Heung-Sik(박흥식)Chi, Sang Bum(지상범)
Publication Year
2004
Abstract
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 7.97 φ, 83.1% of mean porosity, 1.81 kPa of mean shear strength and organic carbon content in sediment ranged from 0.97 to 1.87 mg/cm3. 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/0.06 m2. 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.
ISSN
1598-141X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/5334
DOI
10.4217/OPR.2004.26.2.311
Bibliographic Citation
Ocean and Polar Research, v.26, no.2, pp.311 - 321, 2004
Publisher
Korea Ocean Research and Development Institute
Subject
abundance; biomass; deep-sea benthos; deep-sea sediment; foraminifera; manganese nodule; seafloor; spatial distribution; Pacific Ocean; Pacific Ocean (Tropical); Animalia; Bacteria (microorganisms); Beggiatoa; Foraminifera
Keywords
Abundance; Benthic-animal; Deep-sea floor; Spatial distribution
Type
Article
Language
Korean
Document Type
Article
Publisher
Korea Ocean Research and Development Institute
Related Researcher
Research Interests

deep sea mineral resources,deep sea sediments,심해저 광물자원,심해저 퇴적물,심해 환경

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