전자저널 > 전자저널 > Community Structure of Macrobenthic Invertebrates of Fishing grounds in the coastal waters of Jeju Island

Community Structure of Macrobenthic Invertebrates of Fishing grounds in the coastal waters of Jeju Island

Jun-Cheol Ko, Jun-Ho Koo, Seung-Jong Lee, Dae-Su Chang and Sung-Hwan Jo

Subtropical Fisheries Research Center, NFRDI, Jeju-do, 690-192, Korea Coastal Ecology and Technique Institute, Jeju-do, 695-918, Korea

This study was performed to know and compare the community structures of macrobenthic invertebrates of eight fishing grounds in the coastal waters of Jeju Island from September to October 2008. A total of 166 species was identified. Mollusks comprised 77 species (46.4%); Arthropods 24 (14.5%), Cnidarians 18 (10.8%); Poriferans 16 (9.6%); and the others including Echinoderms 33 (17.7%). Density and biomass were estimated to be 6,905 ind./m2 and 113,100.7 gwwt/m2, respectively. Gastropods was the most dominant taxon in terms of abundance (3,311 ind./m2) and number of species as well, and Gastropods was predominant in biomass (55,789.2 gwwt/m2). The dominant species were Omphalius pfeifferi, Astralium haematragum, Turbo cornutus, Ergalatax contraacta, Lithophaga cura, Anthocidaris crassispina, Herdmania monus in 5-15 m. Based on the cluster analysis, the study area could be divided into two station groups. The biodiversity, evenness and richness index appeared as follows: H' = 1.59-2.95, E' = 0.38-0.87, R = 3.3-10.4. The dominance index were highest in Daepo and lowest in Woljeong.

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