Departmental Bulletin Paper 相模川河口域プランクトン生物量の周年変化
Annual Changes of Chlorophyll a Concentration in the Estuary of the Sagami River.

野木, 大輝  ,  Nogi, Daiki  ,  平賀, 義路  ,  Hiraga, Yoshimichi  ,  金澤, 謙一  ,  Kanazawa, Ken'ichi  ,  西本, 右子  ,  Nishimoto, Yuko  ,  武井, 尊也  ,  Takei, Takaya  ,  鈴木, 祥弘  ,  Suzuki, Yoshihiro

26pp.91 - 96 , 2015-06-30 , 神奈川大学総合理学研究所
The distribution of phytoplankton in the estuary of the Sagami River was determinedfor 5 years in relation to the stratification of sea water-body estimated by several environmental factors. Vertical mixing of the water-body in winter ended and stratification began at the end of February. During this period, chlorophyll a concentrations increased in a layer less than 50-m depth, where phytoplankton could bloom with nutrients from deep layer. Two layers above and below a 30-m depth were found in summer. A higher concentration of chlorophyll a and low salinity were often found at the top of the upper layer, where phytoplankton could bloom with sufficient sunlight and nutrients from the river. Phytoplankton may sink to the bottom of the upper layer, leading to higher concentrations of the chlorophyll a layer. Vertical mixing began at the end of September and the chlorophyll a concentration decreased. Lower concentrations were maintained in winter. Primary productions in this area were limited by the low light intensity due to deep vertical mixing in winter, although they were not limited by lower nutrients due to stratification in summer.
原著2014 年度神奈川大学総合理学研究所共同研究助成論文

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