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논문 기본 정보

자료유형
학술저널
저자정보
Jang Ji Yeon (Faculty of Earth and Marine Convergence, Earth and Marine Science Major, Jeju National University, Jeju 63243, Korea) Kim Joo-Hwan (Ministry of Environment, Government Complex-Sejong, Sejong 30103, Korea) Jeong Do Yun (Faculty of Earth and Marine Convergence, Earth and Marine Science Major, Jeju National University, Jeju 63243, Korea) Kang Su-Min (Department of Earth and Marine Sciences, Jeju National University, Jeju 63243, Korea) Wang Xu (Faculty of Earth and Marine Convergence, Earth and Marine Science Major, Jeju National University, Jeju 63243, Korea) Choi Yun Hyeong (Faculty of Earth and Marine Convergence, Earth and Marine Science Major, Jeju National University, Jeju 63243, Korea) Lee Joon-Baek (Department of Earth and Marine Sciences, Jeju National University, Jeju 63243, Korea) 백승호 (한국해양과학기술원) 김진호 (제주대학교)
저널정보
한국해양과학기술원 Ocean and Polar Research Ocean and Polar Research Vol.46 No.2
발행연도
2024.6
수록면
105 - 121 (17page)
DOI
10.4217/OPR.2024009

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초록· 키워드

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Phytoplankton, as key primary producers, play a critical role in the dynamics of marine ecosystems. This study explores the variation in phytoplankton species appearance along the Jeju coast from spring to summer 2022, emphasizing the stratification and changes in nutrient dynamics. Through extensive field surveys at twelve points around Jeju Island, we measured a range of physical and chemical oceanographic parameters. Monthly average stratification indices displayed an abrupt increase from 22 in May to 3,196 in August, highlighting intense stratification, significantly influenced by the influx of Changjiang River Diluted Water during the summer months. Concurrently, nutrient concentrations exhibited a downward trend, with nitrate and nitrite levels decreasing from 6.7 μM in March to 1.3 μM in July, and phosphate levels declining from 0.31 μM to 0.02 μM during the same period, while silicate concentrations, ranging from 6.8 to 9.8 μM, remained consistently high throughout the study. Similarly, a reduction in monthly average phytoplankton biomass was observed, with concentrations peaking in the spring (April and May) at 406,053 to 409,139 cells L-1 and declining to 45,546 to 118,214 cells L-1 by summer (June to August). Diatoms (Chaetoceros spp. and Skeletonema spp.) dominated the phytoplankton community throughout the period; however, an increased proportion of dinoflagellates (Gyrodinium spp. and Heterocapsa spp.) was observed during the summer months, when stratification was most pronounced. This study confirms that variations in currents and water masses impacting the Jeju coast can significantly influence phytoplankton community dynamics, emphasizing the need for ongoing monitoring in this region.

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