在悬浮养殖水产养殖中的底氧气流的潮调节
Mariña Amo-Seco1, Carmen G Castro1, Curtis A Collins2
1Departamento de Oceanografía, Instituto de Investigacións Mariñas (IIM-CSIC), Vigo, Spain.
Marine environmental research
|February 22, 2025
概括
沿海海养殖场影响盆地氧气吸收. 潮流使沉积物重新悬浮,增加氧气消耗,特别是在浅水中. 建议更深入地放置农场以减轻这些影响.
科学领域:
- 海洋生态海洋生态学
- 海洋学 海洋学 海洋学
- 环境科学 环境科学
背景情况:
- 贝类养殖场通过有机生物沉积来增强盆地氧气吸收,可能导致缺氧.
- 传统的流量方法忽略了影响氧气交换的动态沿海过程.
- 潮的变化显著影响沿海生态系统中的氧气流.
研究的目的:
- 为了研究沿海养殖场内盆地氧气流的潮变性.
- 评估潮流和沉积物再悬浮对氧气消耗的影响.
- 为了比较氧气流动的动态在NAP和春季潮.
主要方法:
- 采用水域协变 (AEC) 技术来测量盆地氧气流.
- 在西班牙维戈河 (Ría de Vigo) 进行了四次海和春季潮期间的部署.
- 在鱼的两侧部署了两个AEC系统,以捕获潮和洪水流.
主要成果:
- 氧气流在潮期间在洪水和潮之间发生了显著的变化,这是由电流速度和剪切应力驱动的.
- 在春季潮期间,尽管洪水速度更高,但在潮期间氧气流量更高,可能是由于底部粗和沉积物再悬浮.
- 潮流通过重新悬浮有机丰富的沉积物来调节盆地氧气流,从而增加了氧气消耗.
结论:
- 潮变化和相关的沉积物再悬浮是沿海养殖场氧气动态的关键因素.
- 贝的不均分布影响了底部粗度和潮电流的影响.
- 未来的养场应该考虑更深的位置,以尽量减少潮驱动的再悬浮和氧气消耗.
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