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서지반출
북동태평양 KODOS 해역 심해 해저특성에 따른 초대형저서동물 분포
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  • 북동태평양 KODOS 해역 심해 해저특성에 따른 초대형저서동물 분포
저자명
유옥환,손주원,함동진,이근창,김경홍,Yu. Ok Hwan,Son. Ju Won,Ham. Dong Jin,Lee. Gun Chang,Kim. Kyeong Hong
간행물명
Ocean and polar research
권/호정보
2014년|36권 4호|pp.447-454 (8 pages)
발행정보
한국해양과학기술원
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
서지반출

기타언어초록

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 $6.8{pm}2.9m$ (SD) from the sea bottom and was operated from a position at $131^{circ}56.85^{prime}-131^{circ}55.02^{prime}W$ 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.