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Schulte-Römer, N.; Meier, J.; Dannemann, E.; Söding, M. |
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Title |
Lighting Professionals versus Light Pollution Experts? Investigating Views on an Emerging Environmental Concern |
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Journal Article |
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2019 |
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Sustainability |
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Sustainability |
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11 |
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6 |
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1696 |
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Keywords |
Lighting; Society |
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Concerns about the potential negative effects of artificial light at night on humans, flora and fauna, were originally raised by astronomers and environmentalists. Yet, we observe a growing interest in what is called light pollution among the general public and in the lighting field. Although lighting professionals are often critical of calling light ‘pollution’, they increasingly acknowledge the problem and are beginning to act accordingly. Are those who illuminate joining forces with those who take a critical stance towards artificial light at night? We explore this question in more detail based on the results of a non-representative worldwide expert survey. In our analysis, we distinguish between “lighting professionals” with occupational backgrounds linked to lighting design and the lighting industry, and “light pollution experts” with mostly astronomy- and environment-related professional backgrounds, and explore their opposing and shared views vis-à-vis issues of light pollution. Our analysis reveals that despite seemingly conflicting interests, lighting professionals and light pollution experts largely agree on the problem definition and problem-solving approaches. However, we see diverging views regarding potential obstacles to light pollution mitigation and associated governance challenges. |
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2071-1050 |
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GFZ @ kyba @ |
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2278 |
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Stone, T.; Santoni de Sio, F.; Vermaas, P.E. |
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Title |
Driving in the Dark: Designing Autonomous Vehicles for Reducing Light Pollution |
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Journal Article |
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2019 |
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Science and Engineering Ethics |
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Sci Eng Ethics |
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in press |
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Society; Darkness; Planning; Public Safety |
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This paper proposes that autonomous vehicles should be designed to reduce light pollution. In support of this specific proposal, a moral assessment of autonomous vehicles more comprehensive than the dilemmatic life-and-death questions of trolley problem-style situations is presented. The paper therefore consists of two interrelated arguments. The first is that autonomous vehicles are currently still a technology in development, and not one that has acquired its definitive shape, meaning the design of both the vehicles and the surrounding infrastructure is open-ended. Design for values is utilized to articulate a path forward, by which engineering ethics should strive to incorporate values into a technology during its development phase. Second, it is argued that nighttime lighting-a critical supporting infrastructure-should be a prima facie consideration for autonomous vehicles during their development phase. It is shown that a reduction in light pollution, and more boldly a better balance of lighting and darkness, can be achieved via the design of future autonomous vehicles. Two case studies are examined (parking lots and highways) through which autonomous vehicles may be designed for “driving in the dark.” Nighttime lighting issues are thus inserted into a broader ethics of autonomous vehicles, while simultaneously introducing questions of autonomous vehicles into debates about light pollution. |
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Department Ethics/Philosophy of Technology, Delft University of Technology, Delft, Netherlands |
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English |
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1353-3452 |
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PMID:30903370 |
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GFZ @ kyba @ |
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2277 |
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Zhang, X.; Yang, W.; Liang, W.; Wang, Y.; Zhang, S. |
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Intensity dependent disruptive effects of light at night on activation of the HPG axis of tree sparrows (Passer montanus) |
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Journal Article |
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2019 |
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Environmental Pollution |
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Environmental Pollution |
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in press |
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Animals |
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Artificial light at night (ALAN) has become increasingly recognized as a disruptor of the reproductive endocrine process and behavior of wild birds. However, there is no evidence that ALAN directly disrupt the hypothalamus-pituitary-gonadal (HPG) axis, and no information on the effects of different ALAN intensities on birds. We experimentally tested whether ALAN affects reproductive endocrine activation in the HPG axis of birds, and whether this effect is related to the intensity of ALAN, in wild tree sparrows (Passer montanus). Forty-eight adult female birds were randomly assigned to four groups. They were first exposed to a short light photoperiod (8 h light and 16 h dark per day) for 20 days, then exposed to a long light photoperiod (16 h light and 8 h dark per day) to initiate the reproductive endocrine process. During these two kinds of photoperiod treatments, the four groups of birds were exposed to 0, 85, 150, and 300 lux light in the dark phase (night) respectively. The expression of the reproductive endocrine activation related TSH-β, Dio2 and GnRH-I gene was significantly higher in birds exposed to 85 lux light at night, and significantly lower in birds exposed to 150 and 300 lux, relative to the 0 lux control. The birds exposed to 85 lux had higher peak values of plasma LH and estradiol concentration and reached the peak earlier than birds exposed to 0, 150, or 300 lux did. The lower gene expression of birds exposed to 150 and 300 lux reduced their peak LH and estradiol values, but did not delay the timing of these peaks compared to the control group. These results reveal that low intensity ALAN accelerates the activation of the reproductive endocrine process in the HPG axis, whereas high intensity ALAN retards it. |
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0269-7491 |
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GFZ @ kyba @ |
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2281 |
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Mohamad, Y.; Haim, A.; Elsalam, Z.A. |
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Altered metabolic and hormonal responses in male rats exposed to acute bright light-at-night associated with global DNA hypo-methylation |
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Journal Article |
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2019 |
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Journal of Photochemistry and Photobiology B: Biology |
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Journal of Photochemistry and Photobiology B: Biology |
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in press |
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Animals |
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The association between light pollution and disruption of daily rhythms, metabolic and hormonal disorders, as well as cancer progression is well-recognized. These adverse effects could be due to nocturnal melatonin suppression. The signaling pathway by which light pollution affects metabolism and endocrine responses is unclear. We studied the effects of artificial light at night (ALAN1) on body mass, food and water intake, daily rhythms of body temperature, serum glucose and insulin in male rats. Daily rhythms of urine production and urinary 6-sulfatoxymelatonin (6-SMT2), as well as global DNA methylation in pancreas and liver tissues were also assessed. Mass gain was higher in ALAN rats compared with controls. Food intake, water consumption, glucose, insulin, and 6-SMT levels markedly lessened in response to ALAN. Conversely, urine production and body temperature were elevated in ALAN rats compared with controls. Significant 24-h rhythms were detected for all variables that were altered in mesor, amplitude, and acrophase occurrences under ALAN conditions. DNA hypo-methylation was detected in ALAN pancreatic tissue compared with controls, but not in hepatic tissue. Overall, ALAN affects metabolic and hormonal physiology in different levels in which flexible crosstalk between melatonin and both epigenetics and metabolic levels expressed as body temperature rhythm, is suggested to mediate the environmental exposure at the molecular level and subsequently physiology is altered. The flexibility of epigenetic modifications provides a potential therapeutic target for rectifying ALAN adverse effects by epigenetic markers such as melatonin and behavioral lifestyle interventions for confining ALAN exposures as much as possible. |
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1011-1344 |
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GFZ @ kyba @ |
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2282 |
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Rodríguez, A.; Arcos, J.M.; Bretagnolle, V.; Dias, M.P.; Holmes, N.D.; Louzao, M.; Provencher, J.; Raine, A.F.; Ramírez, F.; Rodríguez, B.; Ronconi, R.A.; Taylor, R.S.; Bonnaud, E.; Borrelle, S.B.; Cortés, V.; Descamps, S.; Friesen, V.L.; Genovart, M.; Hedd, A.; Hodum, P.; Humphries, G.R.W.; Le Corre, M.; Lebarbenchon, C.; Martin, R.; Melvin, E.F.; Montevecchi, W.A.; Pinet, P.; Pollet, I.L.; Ramos, R.; Russell, J.C.; Ryan, P.G.; Sanz-Aguilar, A.; Spatz, D.R.; Travers, M.; Votier, S.C.; Wanless, R.M.; Woehler, E.; Chiaradia, A. |
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Title |
Future Directions in Conservation Research on Petrels and Shearwaters |
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Journal Article |
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2019 |
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Frontiers in Marine Science |
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Front. Mar. Sci. |
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6 |
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Review; Animals |
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Shearwaters and petrels (hereafter petrels) are highly adapted seabirds that occur across all the world’s oceans. Petrels are a threatened seabird group comprising 124 species. They have bet-hedging life histories typified by extended chick rearing periods, low fecundity, high adult survival, strong philopatry, monogamy and long-term mate fidelity and are thus vulnerable to change. Anthropogenic alterations on land and at sea have led to a poor conservation status of many petrels with 52 (42%) threatened species based on IUCN criteria and 65 (52%) suffering population declines. Some species are well-studied, even being used as bioindicators of ocean health, yet for others there are major knowledge gaps regarding their breeding grounds, migratory areas or other key aspects of their biology and ecology. We assembled 38 petrel conservation researchers to summarize information regarding the most important threats according to the IUCN Red List of threatened species to identify knowledge gaps that must be filled to improve conservation and management of petrels. We highlight research advances on the main threats for petrels (invasive species at breeding grounds, bycatch, overfishing, light pollution, climate change, and pollution). We propose an ambitious goal to reverse at least some of these six main threats, through active efforts such as restoring island habitats (e.g., invasive species removal, control and prevention), improving policies and regulations at global and regional levels, and engaging local communities in conservation efforts. |
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GFZ @ kyba @ |
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2283 |
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