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Robertson, K.; Booth, D.T.; Limpus, C.J. |
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Title |
An assessment of 'turtle-friendly' lights on the sea-finding behaviour of loggerhead turtle hatchlings (Caretta caretta) |
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Journal Article |
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Year |
2016 |
Publication |
Wildlife Research |
Abbreviated Journal |
Wildl. Res. |
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Volume |
43 |
Issue |
1 |
Pages |
27 |
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Keywords |
Animals |
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Abstract |
Context: It is well established that artificial light can disrupt the sea-finding ability of sea turtle hatchlings, and some manufactures are now marketing ‘turtle-friendly’ lights that are supposed to be minimally disruptive to this sea-finding behaviour. However, there have been no studies that have tested whether ‘turtle-friendly’ lights are benign to hatchling sea turtle sea-finding ability.
Aims: We tested two different types of ‘turtle-friendly’ lights (LED amber-light peak intensity 620 nm and LED red-light peak intensity 640 nm) to see whether they are disruptive to the sea-finding ability of eastern-coast Australian loggerhead turtle hatchlings.
Methods: Using standard circular-arena experiments, we assessed the directional preference of newly emerged loggerhead turtle hatchlings from the Woongarra Coast of Queensland, Australia, during different moon phases without artificial lighting and in the presence of ‘turtle-friendly’ lights.
Key results: Contrary to expectations, sea-finding ability of hatchlings was disrupted by the amber lights, particularly in the absence of a moon. The less intense red lights were less disruptive to hatchlings; however, misorientation and disorientation events still occurred when lights were within 4 m of hatchlings. The disruptive impact on sea-finding ability increased with the cumulative impact of multiple lights increasing light intensity.
Conclusions: The ‘turtle-friendly’ lights we used disrupted the sea-finding ability of eastern-coast Australian loggerhead turtle hatchlings, with the most pronounced disruption occurring under moonless conditions.
Implications: The use of amber and red LED lights adjacent to the nesting beaches of loggerhead sea turtles should be managed because this lighting has the potential to disrupt the sea-finding ability of sea turtle hatchlings. |
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1035-3712 |
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LoNNe @ kyba @ |
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1413 |
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Meng, F.; Chen, D.; Xiong, W.; Tan, H.; Wang, Y.; Zhu, W.; Su, S.-J. |
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Title |
Tuning color-correlated temperature and color rendering index of phosphorescent white polymer light-emitting diodes: Towards healthy solid-state lighting |
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Journal Article |
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Year |
2016 |
Publication |
Organic Electronics |
Abbreviated Journal |
Organic Electronics |
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34 |
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18-22 |
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Keywords |
Lighting |
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We report on efficient solution-processed phosphorescent white polymer light-emitting diodes (WPLEDs) with tunable color-correlated temperature (CCT) and color rendering index (CRI), through rationally controlling the composition of the emission layer (EML) based on a near-infrared (NIR)-emitting dinuclear cyclometalated platinum (II) complex bridged with NˆS anionic ligand, named (niq)2Pt2(μ-C8PhOXT)2 (Pt-1, in which PhOXT is 5-(phenyl-1,3,4-oxadiazole)-2-thiol, niq is 1-naphthylisoquinolinato), a sky-blue emitter iridium (III) bis[(4,6-di-fluorophenyl)-pyridinato-N,C2] (picolinate) (FIrpic), and a yellow emitter bis[2-(thieno[3,2-c]pyridin-4-yl)phenyl]iridium(III)(acetylacetonato) (PO-01). One of the best three-color WPLEDs shows a CCT of 3246 K as well as an excellent high CRI of 87, which are greatly beneficial in reducing deep-blue light damage and simultaneously meet the requirement for good color reproduction. Meanwhile, the relevant WPLED also achieves a maximum current efficiency of 12.1 cd/A, corresponding to an external quantum efficiency of 10.6%. This work presents an effective approach through rational combination of sky-blue, yellow, and NIR emitters towards high-performance solution-processable WPLEDs with a physiologically-friendly CCT and a high CRI. |
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1566-1199 |
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1416 |
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Warrant, E. |
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Title |
Superior vision in nocturnal insects inspires new night vision technologies |
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Newspaper Article |
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2016 |
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SPIE Newsroom |
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SPIE Newsroom |
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Vision; Animals; Instrumentation |
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Algorithms that dramatically improve the quality of video sequences captured in very dim light have been developed on the basis of the neural mechanisms in nocturnal insects with excellent visual capabilities. |
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1818-2259 |
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LoNNe @ kyba @; GFZ @ kyba @ |
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1418 |
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Author |
Justice, M.J.; Justice, T.C. |
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Title |
Attraction of Insects to Incandescent, Compact Fluorescent, Halogen, and Led Lamps in a Light Trap: Implications for Light Pollution and Urban Ecologies |
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Journal Article |
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2016 |
Publication |
Entomological News |
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Entomological News |
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125 |
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5 |
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315-326 |
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Animals; Ecology |
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The widespread use of electric lamps has created “ecological light pollution†and “artificial light ecology.†Given the important role of insects in ecosystems, how they are affected by light pollution deserves attention. Lamps designed for lighting small areas around residences are used in abundance, but studies specifically examining them are scarce. This study used a light trap to capture insects for 60 summer nights in a suburban town in Virginia, USA. During each night of trapping, one of five different light bulbs was used in the trap (incandescent, compact fluorescent, halogen, warm color temperature LED, or cool color temperature LED). The data suggest that fewer insects overall are attracted to bulbs using LED technology than bulbs using incandescent technology. This difference was also observed in the orders Lepidoptera and Diptera. These results support the use of LED bulbs to reduce the insect attraction and mortality caused by the use of artificial lights at night. |
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0013-872X |
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LoNNe @ kyba @ |
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1419 |
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Rund, S.; O'Donnell, A.; Gentile, J.; Reece, S. |
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Title |
Daily Rhythms in Mosquitoes and Their Consequences for Malaria Transmission |
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Journal Article |
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Year |
2016 |
Publication |
Insects |
Abbreviated Journal |
Insects |
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7 |
Issue |
2 |
Pages |
14 |
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Keywords |
Animals; Human Health |
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The 24-h day involves cycles in environmental factors that impact organismal fitness. This is thought to select for organisms to regulate their temporal biology accordingly, through circadian and diel rhythms. In addition to rhythms in abiotic factors (such as light and temperature), biotic factors, including ecological interactions, also follow daily cycles. How daily rhythms shape, and are shaped by, interactions between organisms is poorly understood. Here, we review an emerging area, namely the causes and consequences of daily rhythms in the interactions between vectors, their hosts and the parasites they transmit. We focus on mosquitoes, malaria parasites and vertebrate hosts, because this system offers the opportunity to integrate from genetic and molecular mechanisms to population dynamics and because disrupting rhythms offers a novel avenue for disease control. |
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2075-4450 |
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LoNNe @ kyba @ |
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1421 |
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