plSSN : 0374-8111 | elSSN : 2287-8815
plSSN : 0374-8111 | elSSN : 2287-8815
plSSN : 0374-8111elSSN : 2287-8815
Occurrence Patterns and Community Structure of Macrobenthic Invertebratesin the Coastal Waters of Sagye-ri, Jeju Island, Korea from 2016to 2023
고준철*·김보연1·곽정현·김민선·김지현·조운찬2·이관철3
국립수산과학원 아열대수산연구소, 1국립수산과학원 해조류연구소, 2(주)챌린저, 3가을파도
Here, we aimed to determine and compare the community structures of macrobenthic invertebrates in the coastal waters of Sagye-ri in the southern part of Jeju Island from 2016 to 2023. In total, 461 species were identified in this study. Mollusks comprised 238 species (51.6%), arthropods 68 (14.8%), Poriferans 45 (9.8%), Echinodermata 31 (6.7%), Bryozoans 24 (5.2%), Annelida 24 (5.2%), and others, including Cnidarians 19 (4.1%). The density and biomass were estimated to be 188 ind./m2 and 1,017.4 gwwt/m2, respectively. Gastropoda was the most dominant taxon in terms of abundance (87 ind./m2) and number of species. Meanwhile, Gastropoda was predominant in biomass (321.7 gwwt/m2). The dominant species of Gastropoda, Crustacea, Ascidiacea and Stelleroidea were Bittium alutaceum, Perampitho? sp., Herdmania monus, Bittium variegatum, Ophiomastix mixta L?tken, and Bittium glareosum at 5-20 m. Based on cluster analysis, the study area was divided into two groups. The annual biodiversity, evenness, and richness index appeared as follows: H'=3.381-4.458, E'=0.672-0.838, R=16.706-25.021. The dominance index was the highest in 2017 and lowest in 2019.
Macrobenthic invertebrates, Community structure, Jeju Island, Climate change, Subtropical waters