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서해 태안 사질 퇴적물에 서식하는 중형저서동물 군집구조 연구

Meiofauna Community from Sandy Sediments Near Taean in the Yellow Sea, Korea

백진욱|김기춘|이승한|이강현|이동주|채진호|이원철
한국해양과학기술원 (Korea Institute of Ocean Science & Technology)|2009.06|Ocean and Polar Research|제31권 제2호|pp. 199-212

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참고문헌

주제분류해양학

초록

Abstract

The community structure of meiofauna was surveyed from six stations in sand mining area near around Sungapdo, Taean five times from April-December, 2007. Ten meiofaunal taxa in total, comprising 5-9 taxa per station were recovered. Nematodes were dominant from four stations in April and from five stations in May. In June, copepods were dominant from all stations except station two, from which sarcomastigophorans were predominant. Copepods were also dominant from three stations in October and four stations in December. The mean density of meiofauna per 10 cm−2 was the highest in October (130 individuals) and lowest (68 individuals) in April. Meiofauna mean biomass per 10 cm−2 was 3.80-75.26 μgC from each station, with the monthly mean biomass being lowest in April (11.97 μg C) and highest in October (39.50 μgC). The highest biomass was recorded at station five in October (75.26 μg C). Eleven families of harpacticoid copepods occurred Ameiridae and Ectinosomatidae were the most frequent. The mean diversity index was 1.21 from all the stations, 1.22 from the sand mining stations, and 1.19 from the reference stations. The nematode:copepod (N/C) ratio was 1.57 from the sand mining stations and 1.37 from the reference stations. Non-metric multidimensional scaling analysis divided the community into group A (station one, non-sand mining and reference area) and groups B and C in the sand mining area. The present study reports similar numbers of taxa but lower density and biomass of meiofauna compared to previous studies in Korean waters. The variability of the diversity index and N/C ratio may indicate large fluctuation of meiofauna depending on temporal and spatial conditions of the environment in the study area.

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