울진 바다목장 주변해역 연성기질 조하대에 서식하는 대형저서동물의 군집구조

다국어 초록 (Multilingual Abstract)

In this study, we investigated the macrobenthic community structure and spatiotemporal variations in Uljin Marine Ranching area, East Sea of Korea. Macrobenthos were collected using a modified van Veen grab sampler from April to September 2013. Total number of species sampled was 345 and mean density was 5,797 ind. m-2, both of which were dominated by the polychaetes. The most dominant species were Spiophanes bombyx (53.64%), followed by Magelona sp.1 (6.96%), Cadella semitorta (2.73%), Lumbrineris longifolia (2.16%) and Alvenius ojianus (2.08%). Cluster analysis and nMDS ordination analysis based on the Bray-Curtis similarity identified 2 station groups. The group 1 (station 2, 3, 5, 6, 8 and 9) was characterized by high abundance of the polychaetes Magelona sp.1, Lumbrineris longifolia, Scoloplos armiger, Praxillella affinis, Maldane cristata and the bivalve Alvenius ojianus, with fine sediment above 30m water depth. On the other hand, the group 2 (station 1, 4, 7 and 10) was numerically dominated by the polychaete Lumbrineriopsis sp. and the bivalve Cadella semitorta, with coarse sediment below 5m water depth. Collectively, the macrobenthic community structure showed a distinct spatial trend, which seemed to be related to the water depth and sediment composition.

목차 (Table of Contents)

• 서 론
• 재료 및 방법
• 1. 현장조사 및 환경특성
• 2. 군집분석
• 결 과
• 1. 출현 종수 및 개체수
• 2. 우점종
• 3. 생태학적 제 지수
• 4. 군집구조
• 고 찰
• 1. 환경요인 및 생물특성
• 2. 우점종 및 군집구조
• 적 요
• 사 사
• REFERENCES