What happens at night just beyond our doorstep? Nighttime is not necessarily bedtime, at least not for many animals. After all, many animals don’t wake up until the sun goes down. About two-thirds of the world's animal species are nocturnal, including about half of all insect species.1
Nocturnal animals depend on darkness and natural light from the moon and stars for orientation, movement, breeding, hunting or foraging, and avoiding predators and food competitors. Artificial light at night affects physiological functions and processes as well as animal behaviour: they may be unnaturally attracted to or repulsed by artificial light or lose their orientation.
1 Hölker F, Moss T, Griefahn B et al. (2010) The Dark Side of Light: A Transdisciplinary Research Agenda for Light. Ecol Soc 15(4):13.
Translation: Project SKYSCAPE ITAT 2047, KP Interreg Italien-Österreich 2014-2022