논문 상세보기
pp.35-45
This study investigated the spatiotemporal variation of fish larvae assemblages and their relationships with environmental factors in the coastal waters of Saryang and Yokji Islands, Korea, from June 2024 to April 2025. During the study period, surface water temperature ranged from 6.1 to 30.3°C and salinity ranged from 28.25 to 33.96 psu, showing clear seasonal variability. A total of 23 fish larvae taxa belonging to 5 orders and 14 families were identified. Dominant taxa included Parablennius yatabei, Engraulis japonicus, Sebastiscus marmoratus, and Hexagrammos agrammus. Larval abundance ranged from 15 to 1,137 ind. 1,000 m-3, with the highest density and species diversity observed in early summer. Cluster analysis revealed three seasonal assemblages: summer-autumn, winter, and winter-spring groups. Redundancy analysis (RDA) indicated that temperature, salinity, and several copepod taxa were associated with fish larvae distribution, while the cumulative variance explained by the first two axes was 23.9%. These results suggest that fish larvae assemblages in the Saryang and Yokji Islands coastal area are partly related to seasonal environmental gradients and zooplankton composition, but are also influenced by multiple factors including hydrodynamic transport and coastal physical structures. This study provides baseline ecological information on seasonal fish larvae assemblages in a multiisland coastal system and highlights the ecological importance of this area as a spawning and nursery ground for coastal fish populations.
서 론
재료 및 방 법
1. 조사 해역 및 조사 시기
2. 해양환경 조사
3. 동물플랑크톤 채집 및 분석
4. 자치어 채집 및 동정
5. 자료 분석
결 과
1. 수온, 염분 및 Chl-a
2. 동물플랑크톤 출현 양상
3. 자치어 종조성 및 시·공간적 분포
4. 군집 구조
5. 주요 분류군과 환경요인 분석
고 찰
적 요
REFERENCES
