通过生物沉积来量化微塑料的垂直运输,通过典型的水产养殖过器养生物进行量化
Liujiang Meng1, Xiaoxia Sun2, Qingjie Li3
1Jiaozhou Bay National Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing 100049, China.
The Science of the total environment
|November 3, 2023
概括
海洋过器料,如和,在将微塑料从海面通过生物沉积运送到海底方面发挥着关键作用. 这一过程极大地影响了海洋生态系统中微塑料的命运.
科学领域:
- 海洋生物学 海洋生物学
- 环境科学 环境科学
- 生态毒理学 生态毒理学
背景情况:
- 海洋生态系统面临着严重的微塑料污染,从表面到海底的垂直运输机制尚不清楚.
- 生物过程,特别是涉及海洋生物的生物过程,越来越多地被认为是微塑料迁移的驱动因素.
- 过式养殖生物因其食习惯而成为微塑料沉积的潜在关键参与者.
研究的目的:
- 调查水产养殖过器在微塑料沉积中的作用.
- 量化微塑料的丰富性和特征在生物沉积物中选择的双动物和类动物.
- 为了比较不同水产养殖物种之间的微塑料生物沉积率.
主要方法:
- 在,,和的便和伪便中分析微塑料含量.
- 在生物沉积物中量化微塑料的数量,大小 (<1000微米) 和浮力.
- 微塑料生物沉积率在海洋养殖生物体与对照样本之间的比较.
主要成果:
- 微塑料主要在生物沉积物 (便和伪便) 中发现,而不是在生物体内积累.
- 来自海洋养殖生物的生物沉积物含有微塑料度明显高于对照沉积物.
- 较小的 (<1000微米) 和积极浮动的微塑料的沉积被这些生物显著增强,贝显示的最高率.
结论:
- 水产养殖过器在微塑料的垂直转移方面发挥了重要作用,作为"生物塑料".
- 这些生物通过生物沉积促进了微塑料从水柱到海底的去除.
- 了解这些生物机制对于评估海洋环境中微塑料的整体命运和影响至关重要.
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