人工光和云层相互作用,扰乱夜间的天体迁移
Leo M Burke1, Thomas W Davies2, David Wilcockson3
1Bangor University, School of Natural Sciences, Bangor LL57 2UW, UK.
The Science of the total environment
|June 8, 2024
概括
人工夜间照明 (ALAN) 扰乱了沙上的食动物Talitrus saltator的迁徙. 即使低光水平也会显著改变它们的导航和分布,其影响由月相和云层覆盖调节.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 行为生态学 行为生态学
背景情况:
- 人类活动增加了夜间人工光 (ALAN),影响了生态系统.
- 天体为许多物种提供了关键的定向线索.
- 人们对ALAN与自然光周期和气候对物种迁徙的相互作用知之甚少.
研究的目的:
- 调查月相和云层如何调节ALAN对塔利特鲁斯鱼繁多和迁徙行为的影响.
- 确定ALAN对一个关键的沙破坏者的导航和分布的影响.
- 评估低光水平对沿海无脊椎动物种群的影响.
主要方法:
- 进行了一项夜间实地研究,观察Talitrus saltator.
- 在不同的ALAN强度下记录了T. saltator的丰度,大小和迁徙方向.
- 分析了月相和云层对ALAN冲击的影响.
主要成果:
- 随着ALAN强度的增加,T. saltator的丰度和大小显著下降.
- 阿兰的暴露导致更多的个人与海岸线平行迁移,这表明航行中断.
- 发现月相和云层明显改变了ALAN的影响.
结论:
- 阿兰显著抑制了塔利特鲁斯鱼的自然迁移,可能改变了种群分布.
- 即使是低水平的ALAN (低至3 lx) 也可以显著影响沿海无脊椎动物的分布.
- 了解ALAN,自然光周期和气候的相互作用对于评估生态影响至关重要.
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