| Records |
| Author |
Kronfeld-Schor, N.; Dominoni, D.; de la Iglesia, H.; Levy, O.; Herzog, E.D.; Dayan, T.; Helfrich-Forster, C. |
| Title |
Chronobiology by moonlight |
Type |
Journal Article |
| Year |
2013 |
Publication |
Proceedings. Biological Sciences / The Royal Society |
Abbreviated Journal |
Proc Biol Sci |
| Volume |
280 |
Issue |
1765 |
Pages  |
20123088 |
| Keywords |
Animals; Behavior, Animal/physiology; Circadian Rhythm/physiology; Feeding Behavior/*physiology; Invertebrates/*physiology; *Light; *Moon; Predatory Behavior/physiology; Reproduction/physiology; Vertebrates/physiology; communication; foraging; light pollution; lunar cycle; predation; reproduction |
| Abstract |
Most studies in chronobiology focus on solar cycles (daily and annual). Moonlight and the lunar cycle received considerably less attention by chronobiologists. An exception are rhythms in intertidal species. Terrestrial ecologists long ago acknowledged the effects of moonlight on predation success, and consequently on predation risk, foraging behaviour and habitat use, while marine biologists have focused more on the behaviour and mainly on reproduction synchronization with relation to the Moon phase. Lately, several studies in different animal taxa addressed the role of moonlight in determining activity and studied the underlying mechanisms. In this paper, we review the ecological and behavioural evidence showing the effect of moonlight on activity, discuss the adaptive value of these changes, and describe possible mechanisms underlying this effect. We will also refer to other sources of night-time light ('light pollution') and highlight open questions that demand further studies. |
| Address |
Department of Zoology, Tel Aviv University, Tel Aviv 69978, Israel. nogaks@tauex.tau.ac.il |
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0962-8452 |
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PMID:23825199; PMCID:PMC3712431 |
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no |
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IDA @ john @ |
Serial |
29 |
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Dominoni, D.M.; Helm, B.; Lehmann, M.; Dowse, H.B.; Partecke, J. |
| Title |
Clocks for the city: circadian differences between forest and city songbirds |
Type |
Journal Article |
| Year |
2013 |
Publication |
Proceedings. Biological Sciences / The Royal Society |
Abbreviated Journal |
Proc Biol Sci |
| Volume |
280 |
Issue |
1763 |
Pages |
20130593 |
| Keywords |
Animals; Circadian Clocks/*physiology; Circadian Rhythm; Cities; *Ecosystem; Light; Male; Songbirds/classification/*physiology; Trees; Urbanization; birds; chronotype; circadian rhythms; light at night; radio-telemetry; urbanization |
| Abstract |
To keep pace with progressing urbanization organisms must cope with extensive habitat change. Anthropogenic light and noise have modified differences between day and night, and may thereby interfere with circadian clocks. Urbanized species, such as birds, are known to advance their activity to early morning and night hours. We hypothesized that such modified activity patterns are reflected by properties of the endogenous circadian clock. Using automatic radio-telemetry, we tested this idea by comparing activity patterns of free-living forest and city European blackbirds (Turdus merula). We then recaptured the same individuals and recorded their activity under constant conditions. City birds started their activity earlier and had faster but less robust circadian oscillation of locomotor activity than forest conspecifics. Circadian period length predicted start of activity in the field, and this relationship was mainly explained by fast-paced and early-rising city birds. Although based on only two populations, our findings point to links between city life, chronotype and circadian phenotype in songbirds, and potentially in other organisms that colonize urban habitats, and highlight that urban environments can significantly modify biologically important rhythms in wild organisms. |
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Department of Migration and Immuno-ecology, Max Planck Institute for Ornithology, Radolfzell 78479, Germany. ddominoni@orn.mpg.de |
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0962-8452 |
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PMID:23740778; PMCID:PMC3774226 |
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no |
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IDA @ john @ |
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42 |
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Dominoni, D.; Quetting, M.; Partecke, J. |
| Title |
Artificial light at night advances avian reproductive physiology |
Type |
Journal Article |
| Year |
2013 |
Publication |
Proceedings. Biological Sciences / The Royal Society |
Abbreviated Journal |
Proc Biol Sci |
| Volume |
280 |
Issue |
1756 |
Pages |
20123017 |
| Keywords |
Animals; *Lighting; Male; Molting; Photoperiod; Reproduction/*physiology; Singing; Songbirds/*physiology; Testis/anatomy & histology; Testosterone/blood; Trees |
| Abstract |
Artificial light at night is a rapidly increasing phenomenon and it is presumed to have global implications. Light at night has been associated with health problems in humans as a consequence of altered biological rhythms. Effects on wild animals have been less investigated, but light at night has often been assumed to affect seasonal cycles of urban dwellers. Using light loggers attached to free-living European blackbirds (Turdus merula), we first measured light intensity at night which forest and city birds are subjected to in the wild. Then we used these measurements to test for the effect of light at night on timing of reproductive physiology. Captive city and forest blackbirds were exposed to either dark nights or very low light intensities at night (0.3 lux). Birds exposed to light at night developed their reproductive system up to one month earlier, and also moulted earlier, than birds kept under dark nights. Furthermore, city birds responded differently than forest individuals to the light at night treatment, suggesting that urbanization can alter the physiological phenotype of songbirds. Our results emphasize the impact of human-induced lighting on the ecology of millions of animals living in cities and call for an understanding of the fitness consequences of light pollution. |
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Department of Migration and Immuno-ecology, Max Planck Institute for Ornithology, Radolfzell 78315, Germany. ddominoni@orn.mpg.de |
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0962-8452 |
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PMID:23407836; PMCID:PMC3574380 |
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no |
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IDA @ john @ |
Serial |
50 |
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Smith, S.D.P.; McIntyre, P.B.; Halpern, B.S.; Cooke, R.M.; Marino, A.L.; Boyer, G.L.; Buchsbaum, A.; Burton, J., G. Allen; Campbell, L.M.; Ciborowski, J.J.H.; Doran, P.J.; Infante, D.M.; Johnson, L.B.; Read, J.G.; Rose, J.B.; Rutherford, E.S.; Steinman, A.D.; Allan, J.D. |
| Title |
Rating impacts in a multi-stressor world: a quantitative assessment of 50 stressors affecting the Great Lakes |
Type |
Journal Article |
| Year |
2013 |
Publication |
Ecological Applications |
Abbreviated Journal |
Ecological Applications |
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Pages |
140915094202006 |
| Keywords |
Great Lakes; limnology; light pollution; environment; stressor; ecology |
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Ecosystems often experience multiple environmental stressors simultaneously that differ widely in their pathways and strengths of impact. Differences in relative impact can guide restoration and management prioritization, but few studies have empirically assessed a comprehensive suite of stressors acting on a given ecosystem. To fill this gap in the Laurentian Great Lakes, where considerable restoration investments are currently underway, we used expert elicitation via a detailed online survey to develop ratings of the relative impacts of 50 potential stressors. Highlighting the multiplicity of stressors in this system, experts assessed all 50 stressors to have some impact on ecosystem condition, but ratings differed greatly among stressors. Individual stressors related to invasive and nuisance species (e.g., dreissenid mussels and ballast invasion risk) and climate change were assessed as having the greatest potential impacts. These results mark a shift away from the longstanding emphasis on nonpoint phosphorus and persistent bioaccumulative toxic substances in the Great Lakes. Differences in impact ratings among lakes and ecosystem zones were weak, and experts exhibited surprisingly high levels of agreement on the relative impacts of most stressors. Our results provide a basin-wide, quantitative summary of expert opinion on the present-day influence of all major Great Lakes stressors. The resulting ratings can facilitate prioritizing stressors to achieve management objectives in a given location, as well as providing a baseline for future stressor impact assessments in the Great Lakes and elsewhere. |
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1051-0761 |
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no |
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IDA @ john @ |
Serial |
372 |
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| Author |
Dominoni, D.M.; Ã…kesson, S.; Klaassen, R.; Spoelstra, K.; Bulla, M. |
| Title |
Methods in field chronobiology |
Type |
Journal Article |
| Year |
2017 |
Publication |
Philosophical Transactions of the Royal Society B: Biological Sciences |
Abbreviated Journal |
Phil. Trans. R. Soc. B |
| Volume |
372 |
Issue |
1734 |
Pages |
20160247 |
| Keywords |
Animals |
| Abstract |
Chronobiological research has seen a continuous development of novel approaches and techniques to measure rhythmicity at different levels of biological organization from locomotor activity (e.g. migratory restlessness) to physiology (e.g. temperature and hormone rhythms, and relatively recently also in genes, proteins and metabolites). However, the methodological advancements in this field have been mostly and sometimes exclusively used only in indoor laboratory settings. In parallel, there has been an unprecedented and rapid improvement in our ability to track animals and their behaviour in the wild. However, while the spatial analysis of tracking data is widespread, its temporal aspect is largely unexplored. Here, we review the tools that are available or have potential to record rhythms in the wild animals with emphasis on currently overlooked approaches and monitoring systems. We then demonstrate, in three question-driven case studies, how the integration of traditional and newer approaches can help answer novel chronobiological questions in free-living animals. Finally, we highlight unresolved issues in field chronobiology that may benefit from technological development in the future. As most of the studies in the field are descriptive, the future challenge lies in applying the diverse technologies to experimental set-ups in the wild. |
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0962-8436 |
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LoNNe @ kyba @ |
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1753 |
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