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揭示营养再生,转化模式及其对海洋养殖水域有害藻类繁殖的贡献

Lianbao Chi¹, Kaiqin Jiang², Yu Ding³

¹CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China.

The Science of the total environment

|February 8, 2024

概括

营养物质的再生推动了海洋养殖水域的有害藻类繁殖 (HAB). 快速的无机营养物再生,而不是有机营养物吸收,通过循环维持这些繁殖并塑造藻类群落.

科学领域:

海洋生态海洋生态学
环境化学环境化学
物理学的生理学

背景情况:

有害藻类繁殖 (HABs) 构成全球环境和健康风险,特别是在海洋养殖环境中.
由回收驱动的营养物质的可用性对于HABs至关重要,但再生模式仍然不太了解.
营养物质再生对海洋养殖水域HAB的具体贡献需要详细调查.

研究的目的:

在海洋养殖水域的HAB期间调查时间营养变化和藻类组成.
在连续的藻类开花期间测量水柱中营养物质再生和同化率.
阐明营养再生和转化在维持HAB和调节藻类群落中的作用.

主要方法:

2020年6月至9月的联合实地调查和化实验.
测量了营养素和藻类组成的时间变化.
量化了营养物质的再生和同化率,并使用冗余分析和反向溶液方程分析了转化模式.

主要成果:

有机营养素显著刺激了营养素再生,观察到高的溶解无机 (DIN) 和 (DIP) 再生率.
再生的无机营养物质,特别是DIN (100%) 和DIP (72-100%),对于藻类的同化至关重要,维持了连续的开花.
对于Heterosigma和Nannochloris的开花,已经确定了不同的转化途径和利用策略,其中更快的供应有利于Nannochloris.

结论:

营养物质的再生是维持海洋养殖水域持续有害藻类繁殖的关键机制.
循环动态和营养再生率显著影响特定藻类物种的主导地位.
了解这些过程是管理HAB和监管海洋养殖环境中的藻类群落的关键.

关键词:

藻类社区藻类社区绿化水域 (Eutrophic Waters) 是一种水域.有害的藻类繁殖.鱼类养殖 (Mariculture) 是一种养殖方式.营养物质回收利用营养物质回收利用

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