Experimentally manipulating light spectra reveals the importance of dark corridors for commuting bats

© 2018 The Authors Global Change Biology Published by John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 24(2018), 12 vom: 04. Dez., Seite 5909-5918
1. Verfasser: Zeale, Matt R K (VerfasserIn)
Weitere Verfasser: Stone, Emma L, Zeale, Emma, Browne, William J, Harris, Stephen, Jones, Gareth
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2018
Zugriff auf das übergeordnete Werk:Global change biology
Schlagworte:Journal Article Rhinolophus hipposideros artificial light at night bats behaviour dark corridors street lights
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520 |a © 2018 The Authors Global Change Biology Published by John Wiley & Sons Ltd. 
520 |a The rapid global spread of artificial light at night is causing unprecedented disruption to ecosystems. In otherwise dark environments, street lights restrict the use of major flight routes by some bats, including the threatened lesser horseshoe bat Rhinolophus hipposideros, and may disrupt foraging. Using radio tracking, we examined the response of individual female R. hipposideros to experimental street lights placed on hedgerows used as major flight routes. Hedgerows were illuminated on one side over four nights using lights with different emission spectra, while the opposite side of the hedge was not illuminated. Automated bat detectors were used to examine changes in overall bat activity by R. hipposideros and other bat species present. R. hipposideros activity reduced significantly under all light types, including red light, challenging a previously held assumption that red light is safe for bats. Despite this, R. hipposideros rapidly adapted to the presence of lights by switching their flight paths to the dark side of the hedgerow, enabling them to reach foraging sites without restriction. Red light had no effect on the activity of the other species present. Slow-flying Myotis spp. avoided orange, white and green light, while more agile Pipistrellus spp. were significantly more active at these light types compared to dark controls, most probably in response to accumulations of insect prey. No effect of any light type was found for Nyctalus or Eptesicus spp. Our findings demonstrate that caution must be used when promoting forms of lighting that are thought to be safe for wildlife before they are tested more widely. We argue that it is essential to preserve dark corridors to mitigate the impacts of artificial light at night on bat activity and movements 
650 4 |a Journal Article 
650 4 |a Rhinolophus hipposideros 
650 4 |a artificial light at night 
650 4 |a bats 
650 4 |a behaviour 
650 4 |a dark corridors 
650 4 |a street lights 
700 1 |a Stone, Emma L  |e verfasserin  |4 aut 
700 1 |a Zeale, Emma  |e verfasserin  |4 aut 
700 1 |a Browne, William J  |e verfasserin  |4 aut 
700 1 |a Harris, Stephen  |e verfasserin  |4 aut 
700 1 |a Jones, Gareth  |e verfasserin  |4 aut 
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773 1 8 |g volume:24  |g year:2018  |g number:12  |g day:04  |g month:12  |g pages:5909-5918 
856 4 0 |u http://dx.doi.org/10.1111/gcb.14462  |3 Volltext 
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