The distribution of epifaunal megabenthos varies with deep-sea sediment conditions in the korea deep ocean study area (kodos) of the north-eastern pacific SCOPUS KCI

Title
The distribution of epifaunal megabenthos varies with deep-sea sediment conditions in the korea deep ocean study area (kodos) of the north-eastern pacific
Author(s)
Yu, O.H.; Son, J.W.; Ham, D.J.; Lee, G.C.; Kim, K.H.
KIOST Author(s)
Yu, Ok Hwan(유옥환)Ham, Dong Jin(함동진)Kim, Kyeong Hong(김경홍)
Publication Year
2014
Abstract
In August, 2013, we collected epifaunal megabenthos using a deep sea camera (DSC) around a benthic impact study (BIS) site. This was located in the KR5 block of the Korea Deep Ocean Study (KODOS) area in the Northeastern Pacific. The DSC was positioned at 6.8 ± 2.9 m (SD) from the sea bottom and was operated from a position at 131o56.85' - 131o55.02'W for 2.3 h at a speed of 1-2 knot. The geographical features of the study area consisted of two structures; a trough in the middle and hills at the east and west sides. Sediment conditions were consistent within six blocks and were affected by slope and polymetallic nodule deposits. We analyzed 226 megafaunal species. Sipunculida comprised the highest percentage of individuals (39%), and the dominant epifaunal megabenthos were Hormathiidae sp., Primnoidae sp., Hexactinellida sp., Hyphalaster inermis, Freyella benthophila, Paelopatides confundens, Psychropotes longicauda, and Peniagone leander. More than 80% of the total density of megafauna occurred on sea plain (D- and E-blocks). We found two distinct groups in the community, one located on sea plains and the other along both sides of the sea slop. Our results suggest that geographical features such as slope and polymetalic nodule deposits are important in controlling the distribution of the epifaunal megabenthos around the KODOS area. © 2014, Korea Ocean Research and Development Institute. All rights reserved.
ISSN
1598-141X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2939
DOI
10.4217/OPR.2014.36.4.447
Bibliographic Citation
Ocean and Polar Research, v.36, no.4, pp.447 - 454, 2014
Publisher
Korea Ocean Research and Development Institute
Subject
benthos; community composition; community structure; dominance; epifauna; spatial distribution; Pacific Ocean; Pacific Ocean (Northeast); Freyella; Hexactinellida; Hormathiidae; Leander; Paelopatides; Peniagone; Primnoidae; Psychropotes longicauda; Sipunculida
Keywords
Deep sea camera; KODOS; Manganese; Megabenthos; Northeastern Pacific
Type
Article
Language
Korean
Document Type
Article
Publisher
Korea Ocean Research and Development Institute
Related Researcher
Research Interests

Seawater Chemistry,Geochemistry,해수화학,지화학

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