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http://dx.doi.org/10.11626/KJEB.2014.32.4.286

Community Structure of Macrobenthic Assemblages near Uljin Marine Ranching Area, East Sea of Korea  

Hwang, Kangseok (Fisheries Resources Management Division, National Fisheries Research and Development Institute)
Seo, In-Soo (Korea Benthos Research Center, Co., Ltd.)
Choi, Byoung-Mi (Korea Benthos Research Center, Co., Ltd.)
Lee, Han Na (Department of Marine Biology, Pukyong National University)
Oh, Chul Woong (Department of Marine Biology, Pukyong National University)
Kim, Mi Hyang (Ocean-Tech Marine Institute)
Choi, Chang Gun (Department of Ecological Engineering, Pukyong National University)
Na, Jong Hun (Korea Benthos Research Center, Co., Ltd.)
Publication Information
Korean Journal of Environmental Biology / v.32, no.4, 2014 , pp. 286-296 More about this Journal
Abstract
In this study, we investigated the macrobenthic community structure and spatiotemporal variations in Uljin Marine Ranching area, East Sea of Korea. Macrobenthos were collected using a modified van Veen grab sampler from April to September 2013. Total number of species sampled was 345 and mean density was 5,797 ind. $m^{-2}$, both of which were dominated by the polychaetes. The most dominant species were Spiophanes bombyx (53.64%), followed by Magelona sp.1 (6.96%), Cadella semitorta (2.73%), Lumbrineris longifolia (2.16%) and Alvenius ojianus (2.08%). Cluster analysis and nMDS ordination analysis based on the Bray-Curtis similarity identified 2 station groups. The group 1 (station 2, 3, 5, 6, 8 and 9) was characterized by high abundance of the polychaetes Magelona sp.1, Lumbrineris longifolia, Scoloplos armiger, Praxillella affinis, Maldane cristata and the bivalve Alvenius ojianus, with fine sediment above 30m water depth. On the other hand, the group 2 (station 1, 4, 7 and 10) was numerically dominated by the polychaete Lumbrineriopsis sp. and the bivalve Cadella semitorta, with coarse sediment below 5m water depth. Collectively, the macrobenthic community structure showed a distinct spatial trend, which seemed to be related to the water depth and sediment composition.
Keywords
soft-bottom macrobenthos; community structure; Marine Ranchig area; Uljin; East Sea;
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