울진 주변 해역 대형저서동물 군집의 시·공간 분포와 환경요인과의 관계 SCOPUS KCI

Title
울진 주변 해역 대형저서동물 군집의 시·공간 분포와 환경요인과의 관계
Alternative Title
Spatiotemporal Distribution of Macrobenthic Communities in the Coastal Area of Uljin and Its Relation to Environmental Variables
Author(s)
유옥환; 백상규; 이형곤; 이재학
KIOST Author(s)
Yu, Ok Hwan(유옥환)Lee, Hyung Gon(이형곤)
Alternative Author(s)
유옥환; 백상규; 이형곤; 이재학
Publication Year
2011-12
Abstract
Although thermal effluent from coastal power plants affects marine ecosystems, few studies have examined the spatiotemporal distribution of macrobenthic communities in a coastal area of Korea with thermal discharge. This study analyzed the species composition and abundance of a macrobenthic community in relation to environmental variables for a period of 1 year. In total 334 macrobenthic faunal species were collected; the mean density was 3,221 ind/m2. The number of species and the density of macrobenthic fauna increased with distance from the thermal discharge site. Cluster analysis indicated that the macrobenthic community could be divided into two groups: group I in shallow (< 30 m deep) and group II in the outer areas (> 30 m deep). Group I showed the lowest species density and diversity. Four polychaetes, including Magelona japonica, Spiophanes bombyx, Scolotoma longifolia and Chaetozone setosa, all of which have been dominant species since 1987, exhibited higher mean densities in the area distant from the thermal discharge (the outer and north areas). Conversely, the warm-adapted and opportunistic species, such as the amphipods Urothoe convexa and Mandibulophoxus mai, the bivalve Felaniella sowerbyi, and the polychaete Rhynchospio sp., were more abundant in the thermal discharge region. The results of this study indicate that thermal effluent influences macrobenthic communities in the shallow area, while other environmental variables, such as depth, sediment grain size, and TOC, are more important determinants of the macrobenthic communities in deeper regions (> 30 m deep).
ISSN
1598-141X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/40445
Bibliographic Citation
Ocean and Polar Research, v.33, no.4, pp.421 - 434, 2011
Publisher
한국해양과학기술원
Keywords
East sea; Uljin; thermal effluent; macrobenthos; community
Type
Article
Language
Korean
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