Noticias Noticias

Contenidos con etiqueta 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 (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
Promedio (0 Votos)

— 1 Resultados por página
Mostrando el intervalo 1 - 1 de 6 resultados.

Últimas noticias Últimas noticias

Contenidos con etiqueta light pollution .

Las luces blancas y azules son las más perniciosas para la vida salvaje

Las grandes ciudades y zonas industriales emiten tanta luz por las noches que la mayor parte de la Tierra parece una gran bola brillante. Se han estudiado diversas especies de todo el mundo para...

Los efectos de la iluminación artificial para ecoturismo sobre los pingüinos enanos

La observación de animales es una actividad ecoturística emergente en todo el mundo. En Australia y Nueva Zelanda, la observación nocturna de pingüinos enanos atrae a cientos de miles de turistas...

Mortalidad de aves marinas relacionada con luces artificiales

Las luces artificiales nocturnas causan una elevada mortalidad de aves marinas con poblaciones amenazadas. Los jóvenes de las especies afectadas, y en menor medida los adultos, caen a tierra...
— 5 Resultados por página
Mostrando el intervalo 1 - 5 de 6 resultados.