| Records |
| Author |
Dominoni, D.M.; Kjellberg Jensen, J.; de Jong, M.; Visser, M.E.; Spoelstra, K. |
Title  |
Artificial light at night, in interaction with spring temperature, modulates timing of reproduction in a passerine bird |
Type |
Journal Article |
| Year |
2019 |
Publication |
Ecological Applications : a Publication of the Ecological Society of America |
Abbreviated Journal |
Ecol Appl |
| Volume |
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Issue |
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Pages |
in press |
| Keywords |
Animals; Parus major; Alan; light pollution; phenology; timing of reproduction; urbanization |
| Abstract |
The ecological impact of artificial light at night (ALAN) on phenological events such as reproductive timing is increasingly recognized. In birds, previous experiments under controlled conditions showed that ALAN strongly advances gonadal growth, but effects on egg-laying date are less clear. In particular, effects of ALAN on timing of egg-laying are found to be year-dependent, suggesting an interaction with climatic conditions such as spring temperature, which is known have strong effects on the phenology of avian breeding. Thus, we hypothesized that ALAN and temperature interact to regulate timing of reproduction in wild birds. Field studies have suggested that sources of ALAN rich in short wavelengths can lead to stronger advances in egg-laying date. We therefore tested this hypothesis in the great tit (Parus major), using a replicated experimental setup where eight previously unlit forest transects were illuminated with either white, green, or red LED light, or left dark as controls. We measured timing of egg-laying for 619 breeding events spread over six consecutive years and obtained temperature data for all sites and years. We detected overall significantly earlier egg-laying dates in the white and green light versus the dark treatment, and similar trends for red light. However, there was a strong inter-annual variability in mean egg-laying dates in all treatments, which was explained by spring temperature. We did not detect any fitness consequence of the changed timing of egg-laying due to ALAN, which suggests that advancing reproduction in response to ALAN might be adaptive. |
| Address |
Plant Ecology and Nature Conservation Group, Wageningen University, Wageningen, The Netherlands |
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| Language |
English |
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| ISSN |
1051-0761 |
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| Notes |
PMID:31863538 |
Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
2805 |
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| Author |
Maggi, E.; Serôdio, J. |
| Title |
Artificial Light at Night: A New Challenge in Microphytobenthos Research |
Type |
Journal Article |
| Year |
2020 |
Publication |
Frontiers in Marine Science |
Abbreviated Journal |
Front. Mar. Sci. |
| Volume |
7 |
Issue |
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Pages |
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| Keywords |
Commentary; Plants |
| Abstract |
Artificial light at night (ALAN) has been recently recognized as a globally widespread anthropogenic disturbance, characterized by different intensities and spectra, as well as spatial and temporal variability. Among marine organisms, those living on coastal areas are particularly exposed to artificial light. Some recent studies anticipated a potential for influences of ALAN on microphytobenthos (MPB) on rocky shores, either direct or indirectly mediated by trophic relationships. Here we emphasize the need for further investigations in different habitats, as well as on synergistic interferences with other stressors already impinging on coastal areas. The study of effects of ALAN poses new challenges in MPB research, including those related to the use of instruments for measuring both the light environment and the functioning of microbial photoautotrophs at night, and to the development of common monitoring approaches and manipulative experiments. |
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| ISSN |
2296-7745 |
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Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
2935 |
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| Author |
Wilson, P.; Thums, M.; Pattiaratchi, C.; Meekan, M.; Pendoley, K.; Fisher, R.; Whiting, S. |
| Title |
Artificial light disrupts the nearshore dispersal of neonate flatback turtles Natator depressus |
Type |
Journal Article |
| Year |
2018 |
Publication |
Marine Ecology Progress Series |
Abbreviated Journal |
Mar. Ecol. Prog. Ser. |
| Volume |
600 |
Issue |
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Pages |
179-192 |
| Keywords |
Animals |
| Abstract |
After emerging from nests, neonate sea turtles entering the water are thought to orientate away from shore using wave cues to guide them out to sea. Artificial light may interfere with this process, but the relative importance of natural and anthropogenic cues to the dispersal of hatchlings is unknown. Here, we used acoustic telemetry to track the movement of flatback turtle (Natator depressus) hatchlings dispersing through nearshore waters. Turtles dispersed in the presence and absence of artificial light through a receiver array where a range of oceanographic variables were measured. Turtle tracks were analysed using a full subsets Generalised Additive Mixed Model approach to identify the most important cues influencing the bearing, variance in bearing (a measure of the ability to orientate directly), rate of travel and time spent in the array. Artificial light reduced their swim speed by up to 30%, increased the amount of time spent in nearshore waters (by 50–150%) and increased the variance in bearing (100–180% more variable), regardless of oceanographic conditions. Under ambient conditions, ocean currents affected the bearing of hatchlings as they left the shore, but when light was present, this effect was diminished, showing turtles actively swam against currents in their attempts to move towards light. After accounting for the effects of currents on hatchlings dispersing under ambient conditions, turtles swam offshore by moving perpendicular to the coastline and did not appear to orient into incident wave direction. Overall, light disrupted the dispersal of hatchlings causing them to linger, become disoriented in the near shore and expend energy swimming against ocean currents. |
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| ISSN |
0171-8630 |
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no |
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GFZ @ kyba @ |
Serial |
1967 |
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| Author |
Berge, J.; Geoffroy, M.; Daase, M.; Cottier, F.; Priou, P.; Cohen, J.H.; Johnsen, G.; McKee, D.; Kostakis, I.; Renaud, P.E.; Vogedes, D.; Anderson, P.; Last, K.S.; Gauthier, S. |
| Title |
Artificial light during the polar night disrupts Arctic fish and zooplankton behaviour down to 200 m depth |
Type |
Journal Article |
| Year |
2020 |
Publication |
Communications Biology |
Abbreviated Journal |
Commun Biol |
| Volume |
3 |
Issue |
1 |
Pages |
article 102 |
| Keywords |
Animals |
| Abstract |
For organisms that remain active in one of the last undisturbed and pristine dark environments on the planet—the Arctic Polar Night—the moon, stars and aurora borealis may provide important cues to guide distribution and behaviours, including predator-prey interactions. With a changing climate and increased human activities in the Arctic, such natural light sources will in many places be masked by the much stronger illumination from artificial light. Here we show that normal working-light from a ship may disrupt fish and zooplankton behaviour down to at least 200 m depth across an area of >0.125 km2 around the ship. Both the quantitative and qualitative nature of the disturbance differed between the examined regions. We conclude that biological surveys in the dark from illuminated ships may introduce biases on biological sampling, bioacoustic surveys, and possibly stock assessments of commercial and non-commercial species. |
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| ISSN |
2399-3642 |
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no |
| Call Number |
GFZ @ kyba @ |
Serial |
2837 |
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| Author |
Mcmunn, M. S., Yang, L. H., Ansalmo, A., Bucknam, K., Claret, M., Clay, C., Cox, K., Dungey, D. D., Jones, A., & Kim, A. Y. |
| Title |
Artificial Light Increases Local Predator Abundance, Predation Rates, and Herbivory |
Type |
Journal Article |
| Year |
2019 |
Publication |
Environmental Entomology |
Abbreviated Journal |
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| Volume |
48 |
Issue |
6 |
Pages |
1331–1339 |
| Keywords |
Animals; Predation; Arthropods; Ecology |
| Abstract |
Human activity is rapidly increasing the radiance and geographic extent of artificial light at night (ALAN) leading to alterations in the development, behavior, and physiological state of many organisms. A limited number of community-scale studies investigating the effects of ALAN have allowed for spatial aggregation through positive phototaxis, the commonly observed phenomenon of arthropod movement toward light. We performed an open field study (without restricted arthropod access) to determine the effects of ALAN on local arthropod community composition, plant traits, and local herbivory and predation rates. We found strong positive phototaxis in 10 orders of arthropods, with increased (159% higher) overall arthropod abundance under ALAN compared to unlit controls. The arthropod community under ALAN was more diverse and contained a higher proportion of predaceous arthropods (15% vs 8%). Predation of immobilized flies occurred 3.6 times faster under ALAN; this effect was not observed during the day. Contrary to expectations, we also observed a 6% increase in herbivory under ALAN. Our results highlight the importance of open experimental field studies in determining community-level effects of ALAN. |
| Address |
Department of Entomology and Nematology, University of California, Davis, Davis, CA; mmcmunn(at)gmail.com |
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| Call Number |
IDA @ intern @ |
Serial |
2725 |
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