塑料液促进海洋原生动物的生长
Jessy Le Du-Carrée1, Cristina Romera-Castillo2, Rodrigo Almeda1
1ULPGC, University of Las Palmas de Gran Canaria, Campus Universitario de Tafira, 35017, Canary Islands, Spain.
The ISME journal
|August 28, 2025
概括
塑料液通过释放溶解有机碳 (DOC) 来显著促进海洋原生动物的生长. 这一发现突显了海洋微生物食物网因塑料污染而发生的潜在变化.
科学领域:
- 海洋生物学
- 环境化学
- 微生物生态学
背景情况:
- 海洋塑料污染引入化学污染物,影响海洋生态系统.
- 这些液在海洋微生物循环中的作用仍然很大程度上未知.
- 鉴于塑料垃圾的增加, 了解这些影响至关重要.
研究的目的:
- 研究塑料液对海洋原生动物Oxyrrhis marina的影响.
- 评估塑料中溶解的有机碳如何影响微生物群落.
- 确定生物塑料与传统塑料对海洋原生动物的影响.
主要方法:
- 现场收集的塑料和生物塑料被用来制造液.
- 测量了海水中的溶解有机碳 (DOC) 度.
- 监测了Oxyrrhis marina的生长速度,以应对水,有或没有微藻猎物.
- 估计了原生动物的碳同化.
主要成果:
- 塑料水增加了海水的 5-34 倍.
- 在没有微藻的捕食的情况下,海的生长率增加了十倍,达到0.3-0.4 d$^{-1}$.
- 每克微塑料每天可以吸收高达0.7克原生动物的碳.
- 自营性 prokaryotes 被塑料液负面影响.
结论:
- 塑料衍生的碳通过缩促进海洋原生动物的异质代谢.
- 塑料的液可以显著改变海洋微生物循环中的初级生产和异质性之间的平衡.
- 预计塑料污染的增加可能会加剧海洋微生物生态系统的变化.
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