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动物浮游生物是微塑料进入海洋食物网的入口吗?

Kuddithamby Gunaalan^1,2, Torkel Gissel Nielsen¹, Rocío Rodríguez Torres^1,3

¹National Institute of Aquatic Resource, Technical University of Denmark, Kemitorvet, 201, 2800 Kgs. Lyngby, Denmark.

Environmental science & technology

|July 27, 2023

概括

动物浮游生物吸收微塑料 (MP),但其度较低. 来自copepods的便颗粒有助于垂直MP出口,尽管对更高食物网水平的整体风险很低.

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:

动物浮游生物摄入微塑料 (MP),对海洋食物网构成风险.
足动物是关键的动物浮游生物,将初级生产者与更高的营养水平联系起来.
了解动物浮游生物在现场摄取MP的情况至关重要.

研究的目的:

量化自然动物浮游生物中的微塑料度和特征.
评估copepods及其便颗粒在微塑料转移中的作用.
评估微塑料生物放大通过动物浮游生物的风险.

主要方法:

从Kattegat/Skagerrak海收集的动物浮游生物,分类的copepods和便颗粒.
分析了微塑料度和尺寸分布 (低至10微米).
估计的微塑料预算和通过便颗粒的垂直出口.

主要成果:

中位数MP度:1.7x10^-3MPs ind^-1 (动物浮游生物),2.9x10^-3MPs ind^-1 (足动物),每颗便颗粒3x10^-3MPs.
动物浮游生物/便颗粒中的MP大多是小于100微米的碎片;纤维在copepods中占主导地位.
足动物含有3%的表面MP;便颗粒5%,每日垂直出口量为1.4%.

结论:

动物浮游生物作为小国会议员进入食物网的入口.
动物浮游生物中的低MP水平表明转移到更高的营养水平的风险有限.
对MPs的便颗粒出口量较低,但在垂直运输中生态相关.

关键词:

它们是copepods,是copepods,是copepods.便颗粒是一种便颗粒.摄入摄入摄入摄入微塑料微塑料的使用动物浮游生物 (zooplankton) 是一种动物浮游生物.

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