Records |
Author |
Muralidhar, P.; Srihari, V. |
Title  |
Excessive light is another form of pollution on the environment |
Type |
Journal Article |
Year |
2016 |
Publication |
ACADEMICIA: An International Multidisciplinary Research Journal |
Abbreviated Journal |
Academicia: An Inter. Multidiscipl. Rese. Jour. |
Volume |
6 |
Issue |
8 |
Pages |
19 |
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ISSN |
2249-7137 |
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Call Number |
LoNNe @ kyba @ |
Serial |
1535 |
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Author |
Firebaugh, A.; Haynes, K.J. |
Title  |
Experimental tests of light-pollution impacts on nocturnal insect courtship and dispersal |
Type |
Journal Article |
Year |
2016 |
Publication |
Oecologia |
Abbreviated Journal |
Oecologia |
Volume |
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Issue |
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Pages |
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Keywords |
Animals; Ecology |
Abstract |
Though a number of effects of artificial light pollution on behavior and physiology have been described, there is little understanding of their consequences for the growth and distribution of populations. Here, we document impacts of light pollution on aspects of firefly population ecology and underlying mating behaviors. Many firefly species have a unique communication system whereby bioluminescent flashes are used in courtship displays to find and attract mates. We performed a series of manipulative field experiments in which we quantified the effects of adding artificial nighttime lighting on abundances and total flashing activity of fireflies, courtship behaviors and mating between tethered females and free-flying males, and dispersal distances of marked individuals. We show that light pollution reduces flashing activities in a dark-active firefly species (Photuris versicolor) by 69.69 % and courtship behavior and mating success in a twilight-active species (Photinus pyralis). Though courtship behavior and mating success of Photinus pyralis was reduced by light pollution, we found no effects of light pollution on male dispersal in this species. Our findings suggest that light pollution is likely to adversely impact firefly populations, and contribute to wider discussions about the ecological consequences of sensory pollution. |
Address |
Blandy Experimental Farm, University of Virginia, 400 Blandy Farm Lane, Boyce, VA, 22620, USA |
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English |
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0029-8549 |
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Notes |
PMID:27646716 |
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no |
Call Number |
LoNNe @ kyba @ |
Serial |
1526 |
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Author |
Wakefield, A.; Broyles, M.; Stone, E.L.; Jones, G.; Harris, S. |
Title  |
Experimentally comparing the attractiveness of domestic lights to insects: Do LEDs attract fewer insects than conventional light types? |
Type |
Journal Article |
Year |
2016 |
Publication |
Ecology and Evolution |
Abbreviated Journal |
Ecol Evol |
Volume |
6 |
Issue |
22 |
Pages |
8028-8036 |
Keywords |
ecology; Lighting |
Abstract |
LED lighting is predicted to constitute 70% of the outdoor and residential lighting markets by 2020. While the use of LEDs promotes energy and cost savings relative to traditional lighting technologies, little is known about the effects these broad-spectrum âwhiteâ lights will have on wildlife, human health, animal welfare, and disease transmission. We conducted field experiments to compare the relative attractiveness of four commercially available âdomesticâ lights, one traditional (tungsten filament) and three modern (compact fluorescent, âcool-whiteâ LED and âwarm-whiteâ LED), to aerial insects, particularly Diptera. We found that LEDs attracted significantly fewer insects than other light sources, but found no significant difference in attraction between the âcool-â and âwarm-whiteâ LEDs. Fewer flies were attracted to LEDs than alternate light sources, including fewer Culicoides midges (Diptera: Ceratopogonidae). Use of LEDs has the potential to mitigate disturbances to wildlife and occurrences of insect-borne diseases relative to competing lighting technologies. However, we discuss the risks associated with broad-spectrum lighting and net increases in lighting resulting from reduced costs of LED technology. |
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2045-7758 |
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LoNNe @ kyba @ |
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1541 |
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Author |
Bergs, R. |
Title  |
Exploring the Spatial Economy by Night |
Type |
Report |
Year |
2016 |
Publication |
n/a |
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n/a |
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n/a |
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n/a |
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n/a |
Keywords |
Economics; DMSP; DMSP-OLS; remote sensing; spatial distribution |
Abstract |
Night satellite images may offer an interesting tool to generate socio-economically relevant data and to analyse the evolution of space, e.g. cities or rural areas, and how spatial units interact over time. This paper is just an essay with preliminary ideas for discussion; the approach is explorative-methodological rather than one putting an empirical focus on a defined research item. Empirics discussed in this paper are just various examples collected from tinkering.
The DMSP-OLS images and adequate image analysis software such as ImageJ (in some cases to be complemented by further statistics software) provide a useful perspective for the analysis of spatial change. Since there is a stable and significant correlation between social and economic variables (population density, GDP PPP) and luminosity, such image analyses contain important information on spatial economic development. Analysis of night imagery is certainly not adequate to replace the statistical analysis of regional data, but it is a good tool to confirm and illustrate patterns of spatial heterogeneity and spatial dependence over time. |
Address |
PRAC â Bergs & Issa Partnership Co., Bad Soden, Germany |
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n/a |
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English |
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English |
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Planung & Forschung Spolicy Research & Consultancy Discussion Paper Series |
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n/a |
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Call Number |
IDA @ john @ |
Serial |
1392 |
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Author |
Cheng, Y.; Zhao, L.; Wan, W.; Li, L.; Yu, T.; Gu, X. |
Title  |
Extracting urban areas in China using DMSP/OLS nighttime light data integrated with biophysical composition information |
Type |
Journal Article |
Year |
2016 |
Publication |
Journal of Geographical Sciences |
Abbreviated Journal |
J. Geogr. Sci. |
Volume |
26 |
Issue |
3 |
Pages |
325-338 |
Keywords |
Remote Sensing |
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ISSN |
1009-637X |
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no |
Call Number |
LoNNe @ kyba @ |
Serial |
1380 |
Permanent link to this record |