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在密集型水产养殖系统中评估营养循环

Yanmin Wang¹, Xianghui Guo¹, Guizhi Wang¹

¹State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China.

Marine pollution bulletin

|October 13, 2024

概括

海洋养殖的扩张导致沿海的肥胖化. 这项研究发现,养鱼会释放出大量的和,但共同养殖海藻和可以减轻这些影响.

科学领域:

海洋生物学海洋生物学
环境科学环境科学
水产养殖科学水产养殖科学

背景情况:

沿海缩是一个日益关注的问题,与海洋农业的快速扩张有关.
中国的桑沙湾是一个有节的半封闭湾,经历了密集的水产养殖活动.
了解营养循环对于管理水产养殖对环境的影响至关重要.

研究的目的:

评估中国桑沙湾的营养循环,重点关注来自密集水产养殖的投入.
为了量化 (N) 和 (P) 释放的鱼类养殖业务.
评估共同种植策略在缓解肥胖化方面的潜力.

主要方法:

使用双端混合模型来分析营养添加剂.
鱼类养殖中估计的营养投入 (溶解无机 - DIN,溶解无机 - DIP).
垃圾鱼料中的营养物质释放与配方料的比较.
由共同培养的海藻和去除量化的营养物质.

主要成果:

观察到DIN (6.9 ± 4.1 μmol L−1) 和DIP (0.45 ± 0.29 μmol L−1) 的显著增加,主要来自养殖.
据估计,鱼类养殖在春季释放了7789 ± 361N和1497 ± 91P.
与配制料相比,垃圾鱼料导致营养物质的释放率更高 (52.8 ± 4.7% DIN, 33.0 ± 3.7% DIP).
共同培养的海藻和除去了1079 ± 11N和156 ± 8P.

结论:

海洋养殖,特别是养鱼,是桑沙湾的主要营养丰富来源.
料类型显著影响营养释放;优化料可以减少对环境的影响.
同时种植海藻和是一种可行的营养物质去除和减轻缩的战略.

关键词:

配制料配制料是一种配制料.综合的多多的水产养殖水产品.营养物质释放的营养物质桑沙湾 (Sansha Bay) 是一个海湾.垃圾鱼的料垃圾鱼的料

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