光污染对城市剥削者在繁殖阶段的活动有不同的影响:对家 (Passer domesticus) 的实验
Erika Beaugeard1, François Brischoux1, Frédéric Angelier1
1Centre d'Etudes Biologiques de Chizé, UMR 7372, CNRS-LRU, 79360, Villiers en Bois, France.
Environmental pollution (Barking, Essex : 1987)
|May 1, 2024
概括
晚上的人工光 (ALAN) 在特定的繁殖阶段提升了活动节奏. 然而,ALAN并没有影响这种城市鸟类的整体繁殖成功.
科学领域:
- 城市生态学 城市生态学
- 野生动物毒理学
- 行为生态学 行为生态学
背景情况:
- 人工夜间照明 (ALAN) 是一个重要的城市环境变化.
- 白色发光二极管 (LED) 在城市地区越来越多地使用,但它们对野生动物繁殖的影响尚不清楚.
- 脊椎动物对ALAN的反应,特别是在繁殖期间,需要进一步研究.
研究的目的:
- 研究ALAN对家 (Passer domesticus) 在不同繁殖阶段的活动节奏的影响.
- 评估ALAN对家重点生殖表现指标的影响.
- 为了确定房子是否表现出适应性行为或生殖对ALAN的反应.
主要方法:
- 被囚禁的子被暴露在实验ALAN条件或对照条件下.
- 活动节奏,包括第一次活动的时间 (TFA) 和最后活动的时间 (TLA),在整个生殖周期内进行监测.
- 记录了诸如产卵日期,离合体大小,化成功和鸟成功等生殖参数.
主要成果:
- 与对照组相比,ALAN暴露导致了小的早晨活动 (TFA).
- 这种对TFA的影响是阶段特定的,在繁殖前和养期间观察到.
- 在ALAN暴露和对照组之间,在TLA,整体繁殖季活动模式或生殖性能 (产卵日期,离合体大小,化/幼鸟成功) 中没有发现显著差异.
- 家可能习惯于ALAN或由于生理成本而无法维持改变的活动.
结论:
- 艾伦可以改变小的日常活动模式,但这种影响取决于环境和特定阶段.
- 在最佳条件下 (不限制食物),ALAN并没有对家的繁殖表现产生负面影响.
- 研究结果表明,当资源充足时,ALAN对繁殖的影响可能对像家这样适应性强的城市物种来说不那么严重.
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