Species composition and community structure of macrobenthos during fall on the dokdo coast, Korea SCOPUS KCI

Title
Species composition and community structure of macrobenthos during fall on the dokdo coast, Korea
Author(s)
Kang, S.M.; Lee, H.-G.; Kim, S.L.; Choi, J.-W.; Park, C.H.; Yu, O.H.
KIOST Author(s)
Kang, Su Min(강수민)Lee, Hyung Gon(이형곤)Kim, Sang Lyeol(김상렬)Yu, Ok Hwan(유옥환)
Publication Year
2019
Abstract
The Dokdo coast is known for its high biodiversity. However, few studies have examined the biodiversity and macrobenthic community on the subtidal soft-bottom. Therefore, we collected macrobenthos (> 1 mm) using a Smith-McIntyre grab (0.1 m2) at 15 stations along the Dokdo coast in September 2016. The sediments consisted of badly sorted (1.7) coarse sand with gravel and the mean sediment grain size was -0.4ø. In total, 177 macrobenthic species were collected; their mean density was 1,566 ind./m2. The number of species and density of macrobenthic fauna decreased significantly with the mean grain size. The dominant species were the amphipods Melita denticulata (16.5%) and Melita shimizui (5.5%), polychaete Salvatoria clavata (5.4%), bivalve Glycymeris aspersa (4.4%), and ophiuroid Ophionereis dubia (4.3%). The dominant macrobenthos species on the subtidal soft-bottom differed from the coastal areas of the East Sea, suggesting that the difference in the sediment grain size affected the macrobenthos. Cluster analysis was performed to divide the study area into four groups, and environmental factors which correlated with species composition and distribution in the study area were the combination of the four parameters of salinity, dissolved oxygen, total organic carbon and depth. A future seasonal investigation is needed to understand the species composition and characteristics of the Dokdo macrobenthos. © 2019, Korea Ocean Research and Development Institute. All rights reserved.
ISSN
1598-141X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/730
DOI
10.4217/OPR.2019.41.2.047
Bibliographic Citation
Ocean and Polar Research, v.41, no.2, pp.47 - 61, 2019
Publisher
Korea Ocean Research and Development Institute
Subject
autumn; biodiversity; coastal zone; community structure; grain size; macrobenthos; polychaete; seasonal variation; soft-bottom environment; subtidal environment; Liancourt Rocks; Pacific Ocean; Sea of Japan; Sea of Japan; South Korea; Amphipoda; Bivalvia; Glycymeris; Melita; Ophionereis; Ophiuroidea; Polychaeta
Keywords
Benthic community; Dokdo; East sea; Macrobenthos; Subtidal
Type
Article
Language
Korean
Document Type
Article
Publisher
Korea Ocean Research and Development Institute
Related Researcher
Research Interests

Benthos,저서동물

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