经过气候变化的微塑料是否会影响浮游生物群落? 在波罗的海的中宇宙方法
Linea Gry Ebbesen1, Markus Varlund Strange1, Kuddithamby Gunaalan2
1Department of Environmental Engineering, Technical University of Denmark, Denmark; National Institute of Aquatic Resources (DTU AQUA) Technical University of Denmark, Denmark.
Water research
|March 30, 2024
概括
在长期暴露后,经过气候变化的微塑料 (MP) 对波罗的海浮游生物群体的影响最小. 即使在高度下,对浮游生物结构和动态的影响也可以忽略不计,这表明生态风险较低.
科学领域:
- 环境科学 环境科学
- 海洋生物学 海洋生物学
- 生态毒理学 生态毒理学
背景情况:
- 微塑料 (MPs) 是普遍存在的水生污染物,其在社区层面的长期影响尚不清楚.
- 在海洋环境中常见的受天气影响的MPs需要进一步研究它们对生态的影响.
研究的目的:
- 评估化微塑料对波罗的海浮游生物群体的长期影响.
- 在模拟的自然条件下调查对浮游生物结构,动态和叶绿素度的影响.
主要方法:
- 一个为期5周的中宇宙实验 (2 m3 ) 将浮游生物暴露在经过气候变化的MP (PVC,聚烯,聚烯,尼龙) 两种度 (2 μg L-1和2 mg L-1).
- 定期分析浮游生物群的丰度和组成以及叶绿素度.
- 利用统计分析来确定治疗和对照之间的显著差异.
主要成果:
- 一些浮游生物群 (异质细菌,皮科和纳米浮游生物,密码生物,类生物) 在暴露后期更高的MP度下显示出丰度下降.
- 其他群体 (异质纳米鞭状体,天文藻,恐龙鞭状体,藻,甲基浮游生物) 和叶绿素度不受影响,或在MP治疗中增加了丰度.
- 大多数观察到的变化在统计学上并不显著,即使在高MP度下也是如此.
结论:
- 传统材料中的经过气候变化的微塑料在长期暴露后对浮游生物群体的影响最小至微不足道.
- 该研究表明,在环境相关的度下,这些经过气候变化的MP对波罗的海浮游生物构成的生态风险很低.
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