文献类型： 外文期刊

第一作者： Qiao, Guangde

作者： Qiao, Guangde;Wang, Yabing;Liu, Yongli;Min, Minghua;Wang, Lei;Wang, Yongjin;Wang, Lumin;Peng, Shiming;Chen, Heng

作者机构：

关键词： Deep-sea mariculture; Large yellow croaker; Large-scale enclosure aquaculture; Water quality evaluation; Sediment quality evaluation

期刊名称：AQUACULTURE INTERNATIONAL （ 影响因子：2.2； 五年影响因子：2.5 ）

ISSN： 0967-6120

年卷期： 2024 年

页码：

收录情况： SCI

摘要： Deep-sea mariculture, particularly copper (Cu) alloy fence mariculture, is increasingly regarded as a sustainable model for future mariculture development. However, limited research has been conducted on its impact on seawater and sediment. To investigate variations in environmental factors induced by large-scale enclosure aquaculture of the large yellow croaker (Larimichthys crocea), a comprehensive quarterly analysis was conducted in the sea area near Dachen Island, China, from 2021 to 2023. This study focused on changes in pH, dissolved oxygen (DO), Cu, chlorophyll a, dissolved inorganic nitrogen (DIN), and labile phosphate (PO43-\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\mathrm{PO<^>{3-}_{4}}$$\end{document}) in seawater. Additionally, variations in total nitrogen (TN), total phosphorus (TP), and total organic carbon (TOC) content and pollution levels in the sediment were examined. The Nemerow index was used to assess the quality of both seawater and sediment. In 2021 and 2022, the highest DIN content in seawater was observed during the summer, reaching 0.491 +/- 0.161 mgL-1 and 0.485 +/- 0.101 mgL-1, respectively. Contrastingly, in 2023, the peak DIN concentration occurred in autumn, escalating to 0.597 +/- 0.054 mgL-1. Over the three years, the content of PO43-\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\mathrm{PO<^>{3-}_{4}}$$\end{document} in seawater exhibited elevated levels during summer and autumn, with the highest concentration of 0.087 +/- 0.009 mgL-1 observed in autumn 2023. Notably, the Cu content in spring 2023 was 4.09 +/- 0.36 mu gL-1, making the highest quarterly value within the three-year period. This data indicated a discernible accumulation trend for DIN, PO43-\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\mathrm{PO<^>{3-}_{4}}$$\end{document}, and Cu in seawater. Additionally, TN, TP, and TOC levels in the sediment demonstrated an increasing trend over the three years. The maximum TN content recorded in the sediment was 0.69 +/- 0.15 mgL-1 in 2021, 0.74 +/- 0.12 mgL-1 in 2022, and 0.90 +/- 0.15 mgL-1 in 2023. For TP, the highest content was 0.66 +/- 0.17 mgL-1 in 2021, 0.60 +/- 0.18 mgL-1 in 2022, and 0.85 +/- 0.12 mgL-1 in 2023. The maximum TOC content was 0.74 +/- 0.15% in 2021, 0.74 +/- 0.13% in 2022, and 0.95 +/- 0.12% in 2023. The Nemerow index for both seawater and sediment showed a consistent increasing trend over the three-year period. Although seawater quality remained at Class III (mild pollution) for most of this period, it approached Class IV (moderate pollution) during the summer and autumn of 2023. During these three years, sediment quality reached Class II (relatively clean) only in the winter of 2021 and the spring of 2022; however, it remained Class III (mild pollution) during the other seasons. The findings suggested that Cu alloy fence mariculture did not fundamentally address the pollution issue caused by aquaculture. And the development of an ecological mariculture model with a low-carbon footprint and sustainable practices may be the primary direction for future advancements in aquaculture. This study complemented basic data on the environmental impact of Cu alloy fence mariculture and provided theoretical support for the development of sustainable farming models.

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