Broad spectrum artificial light at night increases the conspicuousness of camouflaged prey

Broad spectrum artificial light at night increases the conspicuousness of camouflaged prey
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夜间的广谱人造光增加了伪装猎物的显眼性

DOI:
10.1111/1365-2664.14146
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发表时间:
2022
影响因子:
5.7
通讯作者:
McMahon O
McMahon O
中科院分区:
环境科学与生态学1区
文献类型:
--
作者:
McMahon O

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全球日益流行的高能效广谱照明可能会扰乱一系列视觉引导的生态过程。广谱照明可能能更好地辨别颜色,但在夜间增加伪装猎物的显着性的潜力仍然很少被探索。利用一个成熟的视觉模型,我们量化了四种不同的窄谱和广谱照明技术对潮间带螺类三种不同多态颜色变化的显着性的影响,三种模型捕食者观看。与20世纪的窄谱照明相比,现代广谱照明技术增加了猎物的显着性。这一效果在黄色变体中最为显著,因为它们与天然岩藻背景形成了更大的对比。合成和应用。我们的结果提供了证据,证明全球向广谱照明的过渡将降低自然界夜间伪装的效果,潜在地改变选择性捕食、种群动态和多态种群的遗传结构。这些发现突显了在环境管理和规划中进一步考虑的必要性,以确保栖息地免受不必要的人造光照射。
The growing global prevalence of energy efficient broad spectrum lighting threatens to disrupt an array of visually guided ecological processes. Broad spectrum lighting likely better enables the discrimination of colour, yet it is potential to increase the conspicuousness of camouflaged prey at night remains little explored.Using a well‐established visual model, we quantified the impacts of four spectrally distinct narrow and broad spectrum lighting technologies on the conspicuousness of three different polymorphic colour variations of intertidal littorinid snail, as viewed by three model predators.Modern broad spectrum lighting technologies increased the conspicuousness of prey compared to 20th‐century narrow spectrum lighting. This effect was most prominent in the yellow colour morphs due to greater contrast with their natural fucoid seaweed background.Synthesis and applications. Our results provide evidence that the global transition to broad spectrum lighting will decrease the efficacy of camouflage at night in nature, potentially altering selective predation, population dynamics and the genetic structure of polymorphic populations. These findings highlight the need for further consideration in environmental management and planning, to ensure habitats are protected from unnecessary exposure to artificial light.
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