The ecological impact of city lighting scenarios: exploring gap crossing thresholds for urban bats ...

• Main Authors: Hale, James D., Fairbrass, Alison J., Matthews, Thomas J., Davies, Gemma, Sadler, Jon P.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Zenodo 2015
• Subjects: Biodiversity; Mammalia; Chiroptera; Chordata; Animalia; bats; bat; Pipistrellus pipistrellus
• Online Access: https://dx.doi.org/10.5281/zenodo.13456628; https://zenodo.org/doi/10.5281/zenodo.13456628

(Uploaded by Plazi for the Bat Literature Project) As the global population urbanizes, dramatic changes are expected in city lighting and the urban form, which may threaten the functioning of urban ecosystems and the services they deliver. However, little is known about the ecological impact of lighting in different urban contexts. Movement is an important ecological process that can be disrupted by artificial lighting. We explored the impact of lighting on gap crossing for Pipistrellus pipistrellus, a species of bat (Chiroptera) common within UK cities. We aimed to determine whether the probability of crossing gaps in tree cover varied with crossing distance and lighting level, through stratified field surveys. We then used the resulting data on barrier thresholds to model the landscape resistance due to lighting across an entire city and explored the potential impact of scenarios for future changes to street lighting. The level of illumination required to create a barrier effect reduced as crossing ...