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生物污染沉没的塑料垃圾如何恢复浮力 - - 盆地掠食者的作用

Javier Pinochet¹, Martin Thiel², Mauricio Urbina³

¹Departamento de Zoología, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Casilla 160-C, Concepción, Chile.

The Science of the total environment

|September 3, 2024

概括

海洋塑料碎片可能会因为生物污染而沉没,但盆地掠食会导致它重新浮出水面. 这项研究表明,污染社区的类型决定了塑料垃圾是否会回到表面,从而影响物种的分散.

科学领域:

海洋生物学海洋生物学
环境科学环境科学
海洋学海洋学海洋学

背景情况:

海洋中大量的塑料垃圾没有被记录在表面,这表明它会沉没.
塑料碎片上的生物污染 (有机体的积累) 可以增加其密度,导致其沉没.
据推测,岩层对生物污染的掠食可能会导致沉没的塑料恢复浮力并重新浮出水面.

研究的目的:

实验评估底捕食在沉没塑料碎片浮力恢复中的作用.
研究污染社区的结构和生物量如何影响这种浮力恢复过程.
为了在不同季节 (夏季和冬季) 中比较这些效应.

主要方法:

漂浮的PVC板在夏季和冬季在智利中部部署,直到由于生物污染而沉没.
沉没的板块要么暴露于自然的盆地掠食,要么在网格中得到保护.
评估了所有板块的社区结构,生物质和浮力恢复.

主要成果:

在夏季,所有板块都恢复了浮力,而在冬季,只有60%的板块恢复了浮力;子控制板块仍然留在海底.
浮力恢复与污染社区组成有关;重新浮出水面的板块以不太美味的物种为主.
捕食对浮力恢复产生了重大影响,而不可化的污垢阻止了重新浮出水面.

结论:

岩捕食可以通过消耗生物污染来逆转塑料垃圾的沉没,从而导致复苏.
这种再悬浮机制的有效性高度依赖于污染社区的结构和可口性.
重现的塑料碎片可以作为传播原生和入侵物种的载体.

关键词:

岩式掠食岩式掠食生物污染是一种生物污染.漂浮的垃圾垃圾是漂浮的垃圾漂浮的垃圾垃圾是漂浮的垃圾.漂流 (Rafting) 是一种漂流方式.塞塞尔社区的社区.

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