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Green Light for Nocturnally Migrating Birds Ecology and Society
Poot, Hanneke; Max Planck Institute for Ornithology; hanneke_poot@hotmail.com; Ens, Bruno J.; SOVON Dutch Centre for Field Ornithology; bruno.ens@sovon.nl; de Vries, Han; Utrecht University; j.devries@bio.uu.nl; Donners, Maurice A. H.; Philips Lighting; maurice.donners@philips.com; Wernand, Marcel R.; Royal Netherlands Institute for Sea Research; wernand@nioz.nl; Marquenie, Joop M.; Shell EP Europe (NAM B.V.); joop.marquenie@shell.com.
The nighttime sky is increasingly illuminated by artificial light sources. Although this ecological light pollution is damaging ecosystems throughout the world, the topic has received relatively little attention. Many nocturnally migrating birds die or lose a large amount of their energy reserves during migration as a result of encountering artificial light sources. This happens, for instance, in the North Sea, where large numbers of nocturnally migrating birds are attracted to the many offshore platforms. Our aim is to develop bird-friendly artificial lighting that meets human demands for safety but does not attract and disorient birds. Our current working hypothesis is that artificial light interferes with the magnetic compass of the birds, one of...
Tipo: Peer-Reviewed Reports Palavras-chave: Artificial light; Bird-friendly lighting; Ecological light pollution; Light color; Magnetic compass; Nocturnally migrating birds; Orientation.
Ano: 2008
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Environmental blue light prevents stress in the fish Nile tilapia BJMBR
Volpato,G.L.; Barreto,R.E..
The present study aimed to test the effects of blue, green or white light on the stress response of the Nile tilapia, Oreochromis niloticus (L.). Each color was tested on two groups of isolated adult Nile tilapia (8 replicates each): one being subjected to confinement stress, and the other not (control). A different environmental color was imposed on each compartment by covering the light source with cellophane of the respective color (green or blue; no cellophane was used for white light). The intensity of green, white and blue lights was 250, 590 and 250 lux, respectively. Basal plasma cortisol levels were determined for each fish prior to the experimental procedures. The fish were confined by being displaced toward one side of the aquarium using an...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Stress; Animal welfare; Light color; Cortisol; Nile tilapia; Oreochromis niloticus (L.).
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000800011
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