http://scholars.ntou.edu.tw/handle/123456789/25406
標題: | Nutrient sources, phytoplankton blooms, and hypoxia along the Chinese coast in the East China Sea: Insight from summer 2014 | 作者: | Chen, Chung -Chi Chou, Wen -Chen Hung, Chin-Chang Gong, Gwo-Ching |
關鍵字: | Dissolved inorganic nutrient;Eutrophication;Fugacity ofCO2;Hypoxia;Organic carbon consumption;Phytoplankton blooms | 公開日期: | 2024 | 出版社: | PERGAMON-ELSEVIER SCIENCE LTD | 卷: | 205 | 來源出版物: | MARINE POLLUTION BULLETIN | 摘要: | Phytoplankton blooms are common along the Chinese coast in the East China Sea, driven by various nutrient sources including river discharge, bottom water regeneration, and Kuroshio subsurface water intrusion. A notable 2014 summer bloom off the Zhejiang coast, exhibiting a Chl a concentration of 20.1 mu g L-1 , was significantly influenced by Changjiang River discharge, and high nutrient concentrations are often observed in the region 's surface water. During blooms, primary production peaks at 1686.3 mg C m- 3 d-1 , indicating substantial CO 2 absorption, with surface water f CO 2 declining to 299.5 mu atm, closely linked to plankton activities. Hypoxia often coincides with these frequent bloom occurrences, implicating marine-derived organic matter decomposition as a pivotal factor. Elevated particulate organic carbon concentrations further support this assumption, alongside increased nutrient levels, f CO 2 , and low pH in hypoxic waters. These findings underscore the intricate interplay between phytoplankton, nutrient cycling, and hypoxia formation, essential for effective coastal ecosystem management. |
URI: | http://scholars.ntou.edu.tw/handle/123456789/25406 | ISSN: | 0025-326X | DOI: | 10.1016/j.marpolbul.2024.116692 |
顯示於: | 海洋環境與生態研究所 |
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