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White and blue lights are the most pernicious for wildlife



For many decades, the spectral composition of lighting was determined by the type of lamp, which also influenced potential effects of outdoor lights on species and ecosystems. Light?emitting diode (LED) lamps have dramatically increased the range of spectral profiles of light that is economically viable for outdoor lighting. Because of the array of choices, it is necessary to develop methods to predict the effects of different spectral profiles without conducting field studies, especially because older lighting systems are being replaced rapidly. An approach to predict responses of exemplar organisms and groups to lamps of different spectral output is described by calculating an index based on action spectra from behavioral or visual characteristics of organisms and lamp spectral irradiance. Relative response indices were calculated for a range of lamp types and light sources and an index that identifies lamps that minimize predicted effects as measured by ecological, physiological, and astronomical indices was developed. Using these assessment metrics, filtered yellow?green and amber LEDs are predicted to have lower effects on wildlife than high pressure sodium lamps, while blue?rich lighting would have greater effects. The approach can be updated with new information about behavioral or visual responses of organisms and used to test new lighting products based on spectrum. Together with control of intensity, direction, and duration, the approach can be used to predict and then minimize the adverse effects of lighting and can be tailored to individual species or taxonomic groups. informacion[at]ebd.csic.es: Longcore et al (2018) Rapid Assessment of Lamp Spectrum to Quantify Ecological Effects of Light at Night. J Exp Zool A: Ecol Gen Physiol DOI 10.1002/jez.2184


https://onlinelibrary.wiley.com/doi/full/10.1002/jez.2184
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Content with tag light pollution .

White and blue lights are the most pernicious for wildlife

For many decades, the spectral composition of lighting was determined by the type of lamp, which also influenced potential effects of outdoor lights on species and ecosystems. Light?emitting diode...

Effects of artificial lights for ecotourism on little penguins

Wildlife watching is an emerging ecotourism activity around the world. In Australia and New Zealand, night viewing of little penguins attracts hundreds of thousands of visitors per year. As...

Review of seabird mortality caused by land-based artificial lights

Artificial lights at night cause high mortality of seabirds, one of the most endangered groups of birds globally. Fledglings of burrow-nesting seabirds, and to a lesser extent adults, are grounded...

Waddling on the dark side: ambient light affects attendance behavior of little penguins

The little penguin is the smallest and the only penguin species whose activity on land is strictly nocturnal. Thirteen years of attendance data were used to study the effects of sun, moon, and...
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