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Author Raap, T.; Pinxten, R.; Eens, M.
Title Light pollution disrupts sleep in free-living animals Type Journal Article
Year 2015 Publication Scientific Reports Abbreviated Journal Sci Rep
Volume 5 Issue Pages 13557
Keywords (up) animals
Abstract Artificial lighting can alter individual behaviour, with often drastic and potentially negative effects on biological rhythms, daily activity and reproduction. Whether this is caused by a disruption of sleep, an important widespread behaviour enabling animals to recover from daily stress, is unclear. We tested the hypothesis that light pollution disrupts sleep by recording individual sleep behaviour of great tits, Parus major, that were roosting in dark nest-boxes and were exposed to light-emitting diode light the following night. Their behaviour was compared to that of control birds sleeping in dark nest-boxes on both nights. Artificial lighting caused experimental birds to wake up earlier, sleep less (-5%) and spent less time in the nest-box as they left their nest-box earlier in the morning. Experimental birds did not enter the nest-box or fall asleep later than controls. Although individuals in lit nest-boxes did not wake up more often nor decreased the length of their sleep bouts, females spent a greater proportion of the night awake. Our study provides the first direct proof that light pollution has a significant impact on sleep in free-living animals, in particular in the morning, and highlights a mechanism for potential effects of light pollution on fitness.
Address Department of Biology, Ethology group, University of Antwerp, Universiteitsplein 1, B-2610 Wilrijk, Belgium
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Language English Summary Language Original Title
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Series Volume Series Issue Edition
ISSN 2045-2322 ISBN Medium
Area Expedition Conference
Notes PMID:26337732; PMCID:PMC4559670 Approved no
Call Number LoNNe @ kyba @ Serial 1266
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Author Cohen, J.H.; Berge, J.; Moline, M.A.; Sorensen, A.J.; Last, K.; Falk-Petersen, S.; Renaud, P.E.; Leu, E.S.; Grenvald, J.; Cottier, F.; Cronin, H.; Menze, S.; Norgren, P.; Varpe, O.; Daase, M.; Darnis, G.; Johnsen, G.
Title Is Ambient Light during the High Arctic Polar Night Sufficient to Act as a Visual Cue for Zooplankton? Type Journal Article
Year 2015 Publication PloS one Abbreviated Journal PLoS One
Volume 10 Issue 6 Pages e0126247
Keywords (up) Animals
Abstract The light regime is an ecologically important factor in pelagic habitats, influencing a range of biological processes. However, the availability and importance of light to these processes in high Arctic zooplankton communities during periods of 'complete' darkness (polar night) are poorly studied. Here we characterized the ambient light regime throughout the diel cycle during the high Arctic polar night, and ask whether visual systems of Arctic zooplankton can detect the low levels of irradiance available at this time. To this end, light measurements with a purpose-built irradiance sensor and coupled all-sky digital photographs were used to characterize diel skylight irradiance patterns over 24 hours at 79 degrees N in January 2014 and 2015. Subsequent skylight spectral irradiance and in-water optical property measurements were used to model the underwater light field as a function of depth, which was then weighted by the electrophysiologically determined visual spectral sensitivity of a dominant high Arctic zooplankter, Thysanoessa inermis. Irradiance in air ranged between 1-1.5 x 10-5 mumol photons m-2 s-1 (400-700 nm) in clear weather conditions at noon and with the moon below the horizon, hence values reflect only solar illumination. Radiative transfer modelling generated underwater light fields with peak transmission at blue-green wavelengths, with a 465 nm transmission maximum in shallow water shifting to 485 nm with depth. To the eye of a zooplankter, light from the surface to 75 m exhibits a maximum at 485 nm, with longer wavelengths (>600 nm) being of little visual significance. Our data are the first quantitative characterisation, including absolute intensities, spectral composition and photoperiod of biologically relevant solar ambient light in the high Arctic during the polar night, and indicate that some species of Arctic zooplankton are able to detect and utilize ambient light down to 20-30m depth during the Arctic polar night.
Address The University Centre in Svalbard, 9171, Longyearbyen, Norway; Applied Underwater Robotics Lab, Depts of Biology and Marine Technology, Norwegian University of Science and Technology, N-7491, Trondheim, Norway
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Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1932-6203 ISBN Medium
Area Expedition Conference
Notes PMID:26039111; PMCID:PMC4454649 Approved no
Call Number LoNNe @ kyba @ Serial 1277
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Author Rubolini, D.; Maggini, I.; Ambrosini, R.; Imperio, S.; Paiva, V.H.; Gaibani, G.; Saino, N.; Cecere, J.G.; Herberstein, M.
Title The Effect of Moonlight on Scopoli's ShearwaterCalonectris diomedeaColony Attendance Patterns and Nocturnal Foraging: A Test of the Foraging Efficiency Hypothesis Type Journal Article
Year 2015 Publication Ethology Abbreviated Journal Ethology
Volume 121 Issue 3 Pages 284-299
Keywords (up) animals
Abstract
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Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0179-1613 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ kyba @ Serial 1278
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Author Gorresen, P.; Cryan, P.; Dalton, D.; Wolf, S.; Johnson, J.; Todd, C.; Bonaccorso, F.
Title Dim ultraviolet light as a means of deterring activity by the Hawaiian hoary bat Lasiurus cinereus semotus Type Journal Article
Year 2015 Publication Endangered Species Research Abbreviated Journal Endang. Species. Res.
Volume 28 Issue 3 Pages 249-257
Keywords (up) animals
Abstract
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Series Volume Series Issue Edition
ISSN 1863-5407 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ kyba @ Serial 1287
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Author Brüning A., Hölker, F., Franke, S., Preuer, T., Kloas, W.
Title Impact of different colours of artificial light at night on melatonin rhythm and gene expression of gonadotropins in European perch Type Journal Article
Year 2016 Publication Science of The Total Environment Abbreviated Journal
Volume 543 Issue Pages 214-222
Keywords (up) Animals
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Notes Approved no
Call Number LoNNe @ schroer @ Serial 1294
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