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Author |
Winger, B.M.; Weeks, B.C.; Farnsworth, A.; Jones, A.W.; Hennen, M.; Willard, D.E. |
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Title |
Nocturnal flight-calling behaviour predicts vulnerability to artificial light in migratory birds |
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Journal Article |
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Year |
2019 |
Publication |
Proceedings. Biological Sciences |
Abbreviated Journal |
Proc Biol Sci |
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Volume |
286 |
Issue |
1900 |
Pages |
20190364 |
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Keywords  |
animals |
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Abstract |
Understanding interactions between biota and the built environment is increasingly important as human modification of the landscape expands in extent and intensity. For migratory birds, collisions with lighted structures are a major cause of mortality, but the mechanisms behind these collisions are poorly understood. Using 40 years of collision records of passerine birds, we investigated the importance of species' behavioural ecologies in predicting rates of building collisions during nocturnal migration through Chicago, IL and Cleveland, OH, USA. We found that the use of nocturnal flight calls is an important predictor of collision risk in nocturnally migrating passerine birds. Species that produce flight calls during nocturnal migration tended to collide with buildings more than expected given their local abundance, whereas those that do not use such communication collided much less frequently. Our results suggest that a stronger attraction response to artificial light at night in species that produce flight calls may mediate these differences in collision rates. Nocturnal flight calls probably evolved to facilitate collective decision-making during navigation, but this same social behaviour may now exacerbate vulnerability to a widespread anthropogenic disturbance. Our results also suggest that social behaviour during migration may reflect poorly understood differences in navigational mechanisms across lineages of birds. |
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4 Gantz Family Collections Center, The Field Museum , 1400 South Lake Shore Drive, Chicago, IL 60605 , USA |
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0962-8452 |
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PMID:30940055 |
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GFZ @ kyba @ |
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2287 |
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Author |
Stone, W. |
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Title |
Some Light on Night Migration |
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Journal Article |
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Year |
1906 |
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The Auk |
Abbreviated Journal |
The Auk |
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23 |
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3 |
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249-252 |
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animals |
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0004-8038 |
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GFZ @ kyba @ |
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2288 |
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Dutcher, W. |
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Title |
Bird Notes from Long Island, N. Y |
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Journal Article |
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Year |
1884 |
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The Auk |
Abbreviated Journal |
The Auk |
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1 |
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2 |
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174-179 |
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Keywords |
Animals |
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For the purpose of determining the date of migration, the species migrating, and the numbers that are destroyed by striking a light house during a spring and fall migration, I have for the past two years received all the birds killed by flying against Fire Island Light. |
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0004-8038 |
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GFZ @ kyba @ |
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2290 |
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Willmott, N. J., Henneken, J., Elgar, M. A., & Jones, T. M. |
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Guiding lights: Foraging responses of juvenile nocturnal orb‐web spiders to the presence of artificial light at night |
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Journal Article |
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Year |
2019 |
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Ethology |
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125 |
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5 |
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289-287 |
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Animals |
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The reach of artificial light at night (ALAN) is growing rapidly around the globe, including the increasing use of energy‐efficient LED lights. Many studies document the physiological costs of light at night, but far fewer have focused on the potential benefits for nocturnal insectivores and the likely ecological consequences of shifts in predator–prey relationships. We investigated the effects of ALAN on the foraging behaviour and prey capture success in juvenile Australian garden orb‐web spiders (Eriophora biapicata). Laboratory experiments demonstrated that juvenile spiders were attracted to LED lights when choosing foraging sites, but prey availability was a stronger cue for remaining in a foraging site. Field experiments revealed a significant increase in prey capture rates for webs placed near LED lights. This suggests that any physiological costs of light at night may be offset by the foraging benefits, perhaps partially explaining recently observed increases in the size, fecundity and abundance of some orb‐web spider species in urban environments. Our results highlight the potential long‐term consequences of night lighting in urban ecosystems, through the impact of orb‐web spiders on insect populations. |
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IDA @ intern @ |
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2304 |
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Frank, T. M., Gabbert, W. C., Chaves-Campos, J., & LaVal, R. K. |
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Title |
Impact of artificial lights on foraging of insectivorous bats in a Costa Rican cloud forest |
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Journal Article |
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2019 |
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Journal of Tropical Ecology |
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35 |
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1 |
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8-17 |
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Keywords |
Animals |
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Determining the effects of light pollution on tropical bat communities is important for understanding community assembly rules in urban areas. Studies from temperate regions suggest that, among aerial insectivorous bats, fast-flying species that forage in the open are attracted to artificial lights, whereas slow-flying species that forage in cluttered environments avoid those lights. We measured aerial insectivore responses to light pollution in a tropical cloud forest to test this hypothesis. Bat echolocation was recorded at 20 pairs of light and dark sites in Monteverde, Costa Rica. Foraging activity was higher at artificially lighted sites than dark sites near the new moon, especially around blue-white fluorescent lighting. Most recorded bat species showed increased or unchanged activity in response to light, including some slow-flying and edge-foraging bats. This finding suggests that, contrary to the evaluated hypothesis, flight speed and foraging mode are not sufficient to determine bat responses to artificial lights in the tropics. Two bat species showed decreased activity at light sites, and a low species evenness was recorded around lights, particularly fluorescent lights, compared with dark sites. As in the temperate zone, light pollution in the tropics seems to concentrate certain bat species around human-inhabited areas, potentially shifting community structure. |
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IDA @ intern @ |
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2311 |
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