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微塑料在叶子垃圾中的积累:现场证据表明微塑料的摄入和转移通过猎物-掠食者关系

Asmaa N Mustafa¹, Azza M Khedre¹, Safa M El-Masry¹

¹Group of Invertebrates Ecology and Pollution - Department of Zoology, Faculty of Science, Sohag University, Sohag, 82524, Sohag, Egypt.

|March 13, 2025

概括

微塑料污染是一个全球性问题. 这项研究发现,微塑料 (MPs) 在土壤动物群中积累,像蜘蛛这样的高热量水平显示出像同类动物这样的猎物放大了MP负载.

科学领域:

环境科学环境科学
生态毒理学生态毒理学
陆地生态地球生态

背景情况:

陆地微塑料 (MP) 污染是一个日益严重的全球问题.
叶子垃圾和土壤动物群中的MP含量,以及它们的食用转移,人们对其了解甚微.
跨物种关系对土壤生态系统中MP积累的影响仍然不清楚.

研究的目的:

调查陆地叶子垃圾和土壤动物中的MP污染.
评估捕食者-猎物关系 (同类动物-蜘蛛) 在MP生物积累中的作用.
了解在模型陆地食物链中的MP热量转移和放大.

主要方法:

在落叶垃圾中季节性监测MP度.
在同类动物 (猎物) 和蜘蛛 (捕食者) 中量化MP粒子.
分析MP的特征,包括颜色,形状和大小,在动物和叶子垃圾.

主要成果:

叶子垃圾中的MP度因季节性变化而有所不同 (534010920颗粒/kg干重).
同类动物和蜘蛛含有显著的MP负载 (分别为1.1710.11颗粒/ind和2.254.25颗粒/ind).
发生了MP放大,蜘蛛的MP负载从同类动物猎物 (46.45颗粒/gm) 增加到蜘蛛捕食者 (147.51颗粒/gm湿重).

结论:

对MPs的同位素摄入对陆地食物网中更高的食量水平构成重大风险.
捕食性蜘蛛表现出MP放大,表明了热量转移和积累.
土壤无脊椎动物可以作为MP传播到其他环境生物的载体.

关键词:

这就是Dysdera crocatacata.叶子垃圾在叶子垃圾中.微塑料是一种微塑料.在 Porcellio laevis 的作品中.猎物与掠夺者的关系

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