夜间的人工光线禁止Chaoborus从重要的磁水域进入
Mirosław Ślusarczyk1,2, Anna Bednarska1, Marcin Lukasz Zebrowski1
1Department of Hydrobiology, Institute of Functional Biology and Ecology, Faculty of Biology, Biological and Chemical Research Centre, University of Warsaw, Żwirki I Wigury 101, 02-089, Warsaw, Poland.
Scientific reports
|April 5, 2024
概括
夜间的人工光 (ALAN) 破坏水生生态系统. 艾伦可以阻止昆虫幼虫从安全的深度,迫使他们进入危险的,缺乏氧气的水域,因为光线吸引了鱼类的掠食性增加.
科学领域:
- 生态生态学 生态生态学
- 水生生物学 水生生物学
- 环境科学 环境科学
背景情况:
- 夜间的人工光 (ALAN) 对陆地和沿海生态系统产生影响.
- 它对开放水域生物的影响仍然不太清楚.
- Chaoborus flavicans幼虫通常在白天寻找黑暗的无毒水域,并在晚上寻找更安全的有氧水域.
研究的目的:
- 研究ALAN对水生生物的空间分布的影响.
- 使用昆虫幼虫Chaoborus flavicans作为模型生物来研究开放水域的ALAN效应.
主要方法:
- 现场实验使用HPS路灯在开放水域的停泊船上进行.
- 实验室测试以确定Chaoborus flavicans幼虫的无氧耐受性.
- 在ALAN条件下观察Chaoborus flavicans的空间分布和行为.
主要成果:
- 阿兰吸引了浮游生物鱼类,增加了掠食风险.
- Chaoborus flavicans幼虫被ALAN从地表水域中威.
- 幼虫没有撤退到无氧深度,而是留在低氧金属中,这表明捕食和氧气水平之间的权衡.
- 实验室测试显示对无氧的耐受性有限,在9°C下38小时后50%的死亡率.
结论:
- 阿兰改变了水生生态系统中的捕食者-猎物动态.
- 在ALAN下,Chaoborus flavicans幼虫表现出改变的空间分布,平衡掠食风险和氧气供应.
- 这些发现凸显了淡水环境中光污染对生态的影响.
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