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Rich, C.; Longcore, T.; editors |
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Title |
Ecological Consequences of Artificial Night Lighting |
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2006 |
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Island Press. |
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Ecology |
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LoNNe @ christopher.kyba @ |
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479 |
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Johnsen, S.; Kelber, A.; Warrant, E.; Sweeney, A.M.; Widder, E.A.; Lee, R.L.J.; Hernandez-Andres, J. |
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Title |
Crepuscular and nocturnal illumination and its effects on color perception by the nocturnal hawkmoth Deilephila elpenor |
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Journal Article |
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2006 |
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The Journal of Experimental Biology |
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J Exp Biol |
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209 |
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Pt 5 |
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789-800 |
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Animals; Color Perception/*physiology; Ecosystem; *Light; Moths/*physiology |
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Recent studies have shown that certain nocturnal insect and vertebrate species have true color vision under nocturnal illumination. Thus, their vision is potentially affected by changes in the spectral quality of twilight and nocturnal illumination, due to the presence or absence of the moon, artificial light pollution and other factors. We investigated this in the following manner. First we measured the spectral irradiance (from 300 to 700 nm) during the day, sunset, twilight, full moon, new moon, and in the presence of high levels of light pollution. The spectra were then converted to both human-based chromaticities and to relative quantum catches for the nocturnal hawkmoth Deilephila elpenor, which has color vision. The reflectance spectra of various flowers and leaves and the red hindwings of D. elpenor were also converted to chromaticities and relative quantum catches. Finally, the achromatic and chromatic contrasts (with and without von Kries color constancy) of the flowers and hindwings against a leaf background were determined under the various lighting environments. The twilight and nocturnal illuminants were substantially different from each other, resulting in significantly different contrasts. The addition of von Kries color constancy significantly reduced the effect of changing illuminants on chromatic contrast, suggesting that, even in this light-limited environment, the ability of color vision to provide reliable signals under changing illuminants may offset the concurrent threefold decrease in sensitivity and spatial resolution. Given this, color vision may be more common in crepuscular and nocturnal species than previously considered. |
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Biology Department, Duke University, Durham, NC 27708, USA. sjohnsen@duke.edu |
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English |
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0022-0949 |
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PMID:16481568 |
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LoNNe @ kagoburian @ |
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604 |
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Laaksonen, J.; Laaksonen, T.; Itämies, J.; Rytkönen, S.; Välimäki, P. |
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A new efficient bait-trap model for Lepidoptera surveys – the “ Oulu †model. |
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2006 |
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Entomologica Fennica |
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17 |
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153–160 |
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Animals |
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LoNNe @ kagoburian @ |
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607 |
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Amaral, S.; Monteiro, A.M.V.; Camara, G.; Quintanilha, J.A. |
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DMSP/OLS night-time light imagery for urban population estimates in the Brazilian Amazon |
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Journal Article |
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2006 |
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International Journal of Remote Sensing |
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International Journal of Remote Sensing |
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27 |
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5 |
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855-870 |
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Remote Sensing |
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0143-1161 |
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LoNNe @ kagoburian @ |
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701 |
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Anisimov, V. N. |
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Light pollution, reproductive function and cancer risk |
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2006 |
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Neuroendocrinology Letters |
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27 |
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1-2 |
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35-52 |
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Human Health |
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At present, light pollution (exposure to light-at-night) both in the form of occupational exposure during night work and as a personal choice and life style, is experienced by numerous night-active members of our society. Disruption of the circadian rhythms induced by light pollution has been associated with cancer in humans. There are epidemiological evidences of increased breast and colon cancer risk in shift workers. An inhibition of the pineal gland function with exposure to the constant light (LL) regimen promoted carcinogenesis whereas the light deprivation inhibits the carcinogenesis. Treatment with pineal indole hormone melatonin inhibits carcinogenesis in pinealectomized rats or animals kept at the standard light/dark regimen (LD) or at the LL regimen. These observations might lead to use melatonin for cancer prevention in groups of humans at risk of light pollution. |
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LoNNe @ kagoburian @ |
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703 |
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