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Spatial Characteristics of the Macrobenthos Community Near the Nakdong River Estuary, on the Southeast Coast of Korea
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  • Journal title : Ocean and Polar Research
  • Volume 27, Issue 2,  2005, pp.135-148
  • Publisher : Korea Institute of Ocean Science & Technology
  • DOI : 10.4217/OPR.2005.27.2.135
 Title & Authors
Spatial Characteristics of the Macrobenthos Community Near the Nakdong River Estuary, on the Southeast Coast of Korea
Lee, Hyung-Gon; Lee, Jae-Hac; Yu, Ok-Hwan; Kim, Chong-Kwan;
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 Abstract
Macrobeilthic fauna were collected using a van Veen grab to investigate the spatial characteristics of the macrobenthos community at 28 stations near the Nakdong River estuary, Southeast Korea, in September 2001. A total of 203 species were sampled with a mean density of and a biomass of . Annelids were the dominant faunal group in terms of species and density, with 68 species and a mean density of , which comprised 33.5% and 66.3% of the total benthic animals, respectively. Based on density, three Polychaetes were dominant Tharyx sp· , Lumbrineris longifolia , and Sternaspis scutata , along with a bivalve Theora fragilis . On cluster analysis, the benthic community was classified into four groups based on the species composition: Group-1 occurred in disturbed areas, Group-II in coastal regions, Group-III in central mariculture grounds, and Group-IV offshore. Environmental factors (mean gain size, organic carbon, and depth) were primarily correlated with the macrobenthos community structure. A benthic pollution assessment based on the macrobenthos community structure showed that Group-I and Group-II were located in a coastal area that had been severely disturbed by construction of Busan new port and various pollutants, Group-III was gradually polluted, while offshore Group-IV was the most stable.
 Keywords
estuary;macrobenthos community;spatial characteristics;subtidal;Nakdong River;
 Language
Korean
 Cited by
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