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Author |
Kyba, C.C.M.; Hölker, F. |

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Title |
Do artificially illuminated skies affect biodiversity in nocturnal landscapes? |
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Journal Article |
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Year |
2013 |
Publication |
Landscape Ecology |
Abbreviated Journal |
Landscape Ecol |
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28 |
Issue |
9 |
Pages |
1637-1640 |
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Keywords |
skyglow; light pollution; biodiversity |
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Abstract |
The skyglow from cities at night is one of the most dramatic modifications that humans have made to Earth’s biosphere, and it is increasingly extending into nocturnal landscapes (nightscapes) far beyond urban areas. This scattered light is dim and homogenous compared to a lit street, but can be bright compared to natural celestial light sources, such as stars. Because of the large area of Earth affected by artificial skyglow, it is essential to verify whether skyglow is a selective pressure in nocturnal landscapes. We propose two scientific approaches that could examine whether skyglow affects biodiversity. |
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0921-2973 |
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IDA @ john @ |
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35 |
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Author |
Glass, J.; Ryan, P. |

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Title |
Reduced seabird night strikes and mortality in the Tristan rock lobster fishery |
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Journal Article |
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Year |
2013 |
Publication |
African Journal of Marine Science |
Abbreviated Journal |
African Journal of Marine Science |
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35 |
Issue |
4 |
Pages |
589-592 |
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Keywords |
storm petrels; Pelagodroma marina; Fregetta grallaria; Fregetta tropica; common diving petrel; Pelecanoides urinatrix; broad-billed prion; Pachyptila vittata; Tristan rock lobster; Jasus tristani; seabirds; birds; collision; Gough Island; Tristan |
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Abstract |
The main impact of the fishery for Tristan rock lobster Jasus tristani on seabirds at the Tristan archipelago and Gough Island is through night strikes, when petrels collide with a ship after being disorientated by its lights. Tristan fishery observers have kept records of night strikes on the MV Edinburgh since the 2010/2011 fishing season. Over the last three years, 723 seabirds from nine species were recorded coming aboard the fishing vessel, with at least 39 (5.4%) birds dying as a result. Birds killed were broad-billed prions Pachyptila vittata (41%), common diving petrels Pelecanoides urinatrix (23%), and storm petrels (Pelagodroma marina and Fregetta grallaria/tropica 36%). All these species are listed as Least Concern globally, and the numbers killed per year are <0.1% of the island populations. The captain and crew of the Edinburgh are aware of the problem posed by deck lights at night, and attempt to keep external lighting to a minimum. As a result, the numbers of birds coming aboard vessels in this fishery have decreased from an average of 130 birds per night in 1989 to less than two birds per night in 2010â2013. Currently, most incidents occur during exceptional events when circumstances require deck lights to be lit at night. Consideration should be given to banning fishing operations at night, at least on misty nights. |
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1814-232X |
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IDA @ john @ |
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53 |
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Longcore, T.; Rich, C.; Mineau, P.; MacDonald, B.; Bert, D.G.; Sullivan, L.M.; Mutrie, E.; Gauthreaux Jr., S.A.; Avery, M.L.; Crawford, R.L.; Manville II, A.M.; Travis, E.R.; Drake, D. |

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Title |
Avian mortality at communication towers in the United States and Canada: which species, how many, and where? |
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Journal Article |
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2013 |
Publication |
Biological Conservation |
Abbreviated Journal |
Biological Conservation |
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158 |
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410-419 |
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Birds migrating to and from breeding grounds in the United States and Canada are killed by the millions in collisions with lighted towers and their guy wires. Avian mortality at towers is highly variable across species, and the importance to each population depends on its size and trajectory. Building on our previous estimate of avian mortality at communication towers, we calculated mortality by species and by regions. To do this, we constructed a database of mortality by species at towers from available records and calculated the mean proportion of each species killed at towers within aggregated Bird Conservation Regions. These proportions were combined with mortality estimates that we previously calculated for those regions. We then compared our estimated bird mortality rates to the estimated populations of these species in the United States and Canada. Neotropical migrants suffer the greatest mortality; 97.4% of birds killed are passerines, mostly warblers (Parulidae, 58.4%), vireos (Vireonidae, 13.4%), thrushes (Turdidae, 7.7%), and sparrows (Emberizidae, 5.8%). Thirteen birds of conservation concern in the United States or Canada suffer annual mortality of 1â9% of their estimated total population. Of these, estimated annual mortality is >2% for Yellow Rail (Coturnicops noveboracensis), Swainsonâs Warbler (Limnothlypis swainsonii), Pied-billed Grebe (Podilymbus podiceps), Bay-breasted Warbler (Setophaga castanea), Golden-winged Warbler (Vermivora chrysoptera), Worm-eating Warbler (Helmitheros vermivorum), Prairie Warbler (Setophaga discolor), and Ovenbird (Seiurus aurocapilla). Avian mortality from anthropogenic sources is almost always reported in the aggregate (ânumber of birds killedâ), which cannot detect the species-level effects necessary to make conservation assessments. Our approach to per species estimates could be undertaken for other sources of chronic anthropogenic mortality. |
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Communication towers; Mortality; Night lighting; Neotropical migrants; Collisions; Impact assessment; birds |
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0006-3207 |
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IDA @ john @ |
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54 |
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Author |
Shimose, T.; Yokawa, K.; Tachihara, K. |

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Title |
Higher Catch Rates Around the Full Moon for Blue Marlin, Makaira Nigricans, in a Diurnal Trolling Fishery |
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Journal Article |
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Year |
2013 |
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Bulletin of Marine Science |
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Bms |
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89 |
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3 |
Pages |
759-765 |
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fish; blue marlin; Makaira nigricans; Moon; moonlight; Feeding Behavior |
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The relationship between lunar phase and catch rates of blue marlin, Makaira nigricans Lacépède, 1802, in a diurnal trolling fishery at Yonaguni Island, southwestern Japan, was investigated. The mean catch per unit effort of blue marlin to lunar day was expressed by a periodic regression and significantly increased around the full moon. The stomach content index also significantly increased around the full moon in small blue marlin (<200 cm lower jawâfork length), indicating that diurnal feeding activities of blue marlin increased around the full moon, especially for smaller individuals. The diurnal feeding activity is thought to be influenced by the nighttime activities of blue marlin and/or prey movements. |
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0007-4977 |
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IDA @ john @ |
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63 |
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Author |
Becker, A.; Whitfield, A.K.; Cowley, P.D.; Järnegren, J.; Naesje, T.F.; Crispo, E. |

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Title |
Potential effects of artificial light associated with anthropogenic infrastructure on the abundance and foraging behaviour of estuary-associated fishes |
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Journal Article |
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Year |
2013 |
Publication |
Journal of Applied Ecology |
Abbreviated Journal |
J Appl Ecol |
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Volume |
50 |
Issue |
1 |
Pages |
43-50 |
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Keywords |
fish; biology; ecology |
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As a consequence of a positive phototaxic response, the findings of this study suggest that artificial light often associated with man-made structures has the potential to alter fish communities within urban estuarine ecosystems by creating optimal conditions for predators. Future coastal developments should consider the ecological implications of lighting on aquatic communities. We recommend that lighting be minimized around coastal infrastructure and the use of red lights, which have limited penetration though water, be considered. |
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0021-8901 |
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IDA @ john @ |
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64 |
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