天光释放一个黄昏的鸟从视觉上的限制在活跃
Ruben Evens1, Michiel Lathouwers2, Jean-Nicolas Pradervand3
1Department of Biology, Behavioural Ecology and Ecophysiology group, University of Antwerp, Universiteitsplein 1, B-2610 Wilrijk, Belgium.
The Science of the total environment
|July 28, 2023
概括
夜间的人工光或天空光增加了鸟类的飞行活动,即使是在阴天的夜晚. 这种适应人工光周期可能会影响夜行物种.
科学领域:
- 生态生态学 生态生态学
- 动物行为 动物行为
- 环境科学 环境科学
背景情况:
- 夜间的人工光 (ALAN) 扰乱了自然光周期,这对于动物活动至关重要.
- 天光,来自ALAN的间接照明,在全球范围内正在增加,但它对野生动物行为的影响还未得到充分研究.
- 之前对ALAN效应的研究仅限于受控实验室环境.
研究的目的:
- 为了研究天光对自由生活的夜鸟类飞行活动的影响.
- 为了比较夜间的光线条件和鸟类活动在不同地点与不同的天空光照曝光.
- 了解人造夜空亮度如何影响日常和季节性活动模式.
主要方法:
- 使用动物传播的活动记录器来监测欧洲夜 (Caprimulgus europaeus) 的飞行活动.
- 比较了高天光 (比利时) 和近乎纯净的天空 (非洲,蒙古) 的活动数据.
- 分析了与自然光周期 (月相,云层) 和人工天空亮度相关的飞行活动.
主要成果:
- 在没有月亮的夜晚,Nightjar飞行活动在高空的天光区域比原始地点高出四倍.
- 对云层覆盖的反应是相反的:阴天夜晚降低了原始地区的活动,但在天空光下增加了活动.
- 人工天空亮度使夜能够延长其活动周期,减轻自然视觉限制.
结论:
- 人类制造的天空光显著改变了夜间的行为,延长了夜的可用活动时间.
- 这种适应人造光周期可能会影响许多夜和夜生活物种.
- 需要进一步的研究来探索对人口动态和跨物种相互作用的影响.
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