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Author Kyba, C.C.M.; Ruhtz, T.; Fischer, J.; Hölker, F.
Title (up) Lunar skylight polarization signal polluted by urban lighting Type Journal Article
Year 2011 Publication Journal of Geophysical Research: Atmospheres Abbreviated Journal J. Geophys. Res.
Volume 116 Issue D24 Pages
Keywords aeroecology; ecological light pollution; light pollution; moonlight; nocturnal navigation; polarized light
Abstract On clear moonlit nights, a band of highly polarized light stretches across the sky at a 90 degree angle from the moon, and it was recently demonstrated that nocturnal organisms are able to navigate based on it. Urban skyglow is believed to be almost unpolarized, and is therefore expected to dilute this unique partially linearly polarized signal. We found that urban skyglow has a greater than expected degree of linear polarization (p = 8.6 ± 0.3%), and confirmed that its presence diminishes the natural lunar polarization signal. We also observed that the degree of linear polarization can be reduced as the moon rises, due to the misalignment between the polarization angles of the skyglow and scattered moonlight. Under near ideal observing conditions, we found that the lunar polarization signal was clearly visible (p = 29.2 ± 0.8%) at a site with minimal light pollution 28 km from Berlin's center, but was reduced (p = 11.3 ± 0.3%) within the city itself. Daytime measurements indicate that without skyglow pwould likely be in excess of 50%. These results indicate that nocturnal animal navigation systems based on perceiving polarized scattered moonlight likely fail to operate properly in highly light-polluted areas, and that future light pollution models must take polarization into account.
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ISSN 0148-0227 ISBN Medium
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Notes Approved no
Call Number IDA @ john @ Serial 21
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Author Horváth, G.; Kriska, G.; Malik, P.; Robertson, B.
Title (up) Polarized light pollution: a new kind of ecological photopollution Type Journal Article
Year 2009 Publication Frontiers in Ecology and the Environment Abbreviated Journal Frontiers in Ecology and the Environment
Volume 7 Issue 6 Pages 317-325
Keywords light pollution; polarization; polarized light pollution
Abstract The alteration of natural cycles of light and dark by artificial light sources has deleterious impacts on animals and ecosystems. Many animals can also exploit a unique characteristic of light – its direction of polarization –as a source of information. We introduce the term “polarized light pollution” (PLP) to focus attention on the ecological consequences of light that has been polarized through interaction with human-made objects. Unnatural polarized light sources can trigger maladaptive behaviors in polarization-sensitive taxa and alter ecological interactions. PLP is an increasingly common byproduct of human technology, and mitigating its effects through selective use of building materials is a realistic solution. Our understanding of how most species use polarization vision is limited, but the capacity of PLP to drastically increase mortality and reproductive failure in animal populations suggests that PLP should become a focus for conservation biologists and resource managers alike.
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ISSN 1540-9295 ISBN Medium
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Notes Approved no
Call Number IDA @ john @ Serial 22
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Author Robertson, B.A.; Keddy-Hector, I.A.; Shrestha, S.D.; Silverberg, L.Y.; Woolner, C.E.; Hetterich, I.; Horváth, G.
Title (up) Susceptibility to ecological traps is similar among closely related taxa but sensitive to spatial isolation Type Journal Article
Year 2018 Publication Animal Behaviour Abbreviated Journal
Volume 135 Issue Pages 77-84
Keywords aquatic insect; behaviour; evolutionary trap; light pollution; maladaptation; polarized light pollution
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Series Editor Series Title Abbreviated Series Title
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ISSN 0003-3472 ISBN Medium
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Notes Approved no
Call Number LoNNe @ schroer @ Serial 1793
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