气候变暖和药物的联合影响对三位热带淡水食物网的影响
Claire Duchet1, Kateřina Grabicová2, Vojtech Kolar1
1Department of Ecosystem Biology, Faculty of Science, University of South Bohemia, Branišovská 1760, 37005 České Budějovice, Czech Republic; Institute of Entomology, Biology Centre of the Czech Academy of Sciences, Branišovská 31, 37005 České Budějovice, Czech Republic.
Water research
|December 30, 2023
概括
气候变暖和制药污染相互作用,损害淡水食物网,特别是在夏季. 这些压力因素的组合可以更严重地改变水生生态系统,而不是单独.
科学领域:
- 环境科学 环境科学
- 生态毒理学 生态毒理学
- 淡水生态学 淡水生态
背景情况:
- 湖泊和池面临着人类造成的多种压力因素,但它们对水生食物网的综合影响尚不清楚.
- 药品是淡水中常见的污染物,气候变化导致的气温上升是另一个重要的压力因素.
研究的目的:
- 调查变暖和制药混合物对淡水三营养网的相互作用影响.
- 评估这些压力因素在不同季节如何影响不同热带水平 (植物浮游生物,动物浮游生物,宏观无脊椎动物).
主要方法:
- 使用池社区进行了两个中宇宙实验,模拟了变暖 (+4°C) 和环境相关的药物度.
- 该研究研究了对植物浮游生物,动物浮游生物和宏观无脊椎动物的影响,包括直接和间接的生物相互作用.
- 评估了压力因素影响的季节性差异,实验在夏季和冬季进行.
主要成果:
- 变暖和药品显著改变了动物浮游生物的组成和昆虫捕食者的出现在夏天的实验中.
- 这两种压力因素都减少了过的动物浮游生物质,同时在夏季对植物浮游生物产生了相反的影响.
- 冬季实验显示效果较弱,只有变暖对植物浮游生物质产生了积极影响.
结论:
- 药品可以放大气候变暖对淡水生态系统的负面影响,特别是在温暖的月份.
- 季节性评估对于了解水生环境中多种新出现的压力因素带来的复杂风险至关重要.
- 社区一级的研究为对环境压力因素组合的生态风险评估提供了宝贵的见解.
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