Spatial distributions of macrozoobenthic communities in the Seomjin river estuary SCOPUS KCI

Title
Spatial distributions of macrozoobenthic communities in the Seomjin river estuary
Author(s)
Seo, J.-Y.; Kim, J.-H.; Choi, J.-W.
KIOST Author(s)
Seo, Jin Young(서진영)
Publication Year
2017
Abstract
This study was carried out to investigate the spatial distributions of the macrobenthic communities in the Seomjin River estuary from May, 2015 to May, 2016. The number of species was 163, the mean density was 1,865 ind.m-2, biomass was 204 g·wet m-2 during this study period. The highest number of species and density appeared among polychaetes whereas the most biomass was contributed by mollusks due to the presence of Corbicula japonica in every season. The study area was divided into 3 regions with similar benthic fauna responding to the gradient of the salinity. Praxillella praetermissa was the dominant species in regions of over 30 psu during all seasons. C. japonica and Hediste diadroma were dominant in the upper regions of the Seomjin River where the salinity was less than 10 psu. Heteromastus filiformis showed the broadest distributional range and dominated in all seasons except for the most upper stream at st. 7. From the result of the Bio-Env analysis, salinity was the most important environmental factor affecting the formation of macrobenthic communities in the study area, and salinity and TOC were the highest contributors to the macrobenthic communities. From the correlation analysis between major dominant species and environmental factors, C. japonica, Prionospio japonica and H. diadroma showed a negative correlation with salinity, while P. praetermissa and Scolectoma longifolia showed a positive correlation. H. filiformis was little affected by salinity but showed a positive correlation with TOC or silt content of sediment. © 2017, Korea Ocean Research and Development Institute. All rights reserved.
ISSN
1598-141X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/1323
DOI
10.4217/OPR.2017.39.1.023
Bibliographic Citation
Ocean and Polar Research, v.39, no.1, pp.23 - 34, 2017
Publisher
Korea Ocean Research and Development Institute
Subject
community dynamics; environmental factor; fauna; salinity; spatial distribution; zoobenthos; Somjin Estuary; South Korea; Corbicula japonica; Hediste diadroma; Heteromastus filiformis; Mollusca; Polychaeta; Praxillella praetermissa; Prionospio japonica
Keywords
Macrobenthic community; Salinity; Seomjin River estuary; Spatial distribution
Type
Article
Language
Korean
Document Type
Article
Publisher
Korea Ocean Research and Development Institute
Related Researcher
Research Interests

Macrobenthic community structures,Population dynamics,Bioassay,대형저서동물 군집,개체군 연구,생물독성

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