Effects of mussel-kelp ratios in integrated mariculture on the carbon dioxide system in Sanggou Bay

文献类型： 外文期刊

第一作者： Jiang, Wenwen

作者： Jiang, Wenwen;Fang, Jinghui;Jiang, Wenwen;Jiang, Wenwen

作者机构：

关键词： Carbonate system; IMTA; Shellfish; Seaweed; Carbon sink

期刊名称：JOURNAL OF SEA RESEARCH （ 影响因子：2.108； 五年影响因子：2.397 ）

ISSN： 1385-1101

年卷期： 2021 年 167 卷

页码：

收录情况： SCI

摘要： The ocean is the largest carbon reservoir on Earth. The shellfish-seaweed mode of Integrated Multi-trophic Aquaculture (IMTA) can be optimized to enhance carbon removal from the sea. In this study, the effects of different mussel-kelp ratios (i.e. 6:3, 6:2, 6:1, 4:3, 4:2, 4:1, 2:3, 2:2, and 2:1) on water quality and the carbon dioxide (CO2) system were 6:3, 6:2, 6:1, 4:3, 4:2, 4:1, 2:3, 2:2, and 2:1, were investigated using experimental enclosures in Sanggou Bay, China. The results showed that the DO decreased significantly when ratios were 4:1, 6:2 and 6:1. With the exception of ratio 4:3, there was no significant change in pH in any treatment. The highest of DO, pH, and CO32- values occurred when the mussel-kelp ratio was 2:3, the highest proportion of kelp, while the lowest occurred in ratio 6:1, with the highest proportion of mussels. The highest levels of pCO(2), CO2 and HCO3- were observed in ratio 6:1, and the lowest when the ratio was 2:3. Both DIC and HCO3- significantly decreased by the end of the experiment for ratios 2:1 and 6:3, while the concentration of CO2 significantly decreased for ratios 2:3 and 6:3. Considering the measured parameters, the mussel-kelp ratios of 2:1, 2:2, 4:2 and 4:3 were identified as the best net carbon sinks with the smallest negative environmental impacts. This study revealed how the IMTA shellfish-seaweed modes can be optimized to mitigate ocean acidification using specific proportions of species.

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