Impact of upwelling on phytoplankton blooms and hypoxia along the Chinese coast in the East China Sea

Chung-Chi Chen, Fuh-Kwo Shiah, Gwo-Ching Gong & Tzong-Yueh Chen
This study evaluates the rarely observed phenomenon of the simultaneous occurrences of phytoplankton blooms, hypoxia, and upwelling along the Zhejiang coast in the East China Sea. Results show that the upwelling uplifted bottom water to 5–10 m below the surface. In the upwelling region, phytoplankton blooms (Chl a = 10.9 μg L−1) occurred and hypoxia or low-oxygen appeared below the surface water. High concentrations of nitrate and phosphate were regenerated in the hypoxic regions, corresponding...
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