| Records |
| 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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Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
1967 |
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| Author |
Ngarambe, J.; Lim, H.S.; Kim, G. |
| Title |
Light Pollution: Is there an Environmental Kuznets Curve? |
Type |
Journal Article |
| Year |
2018 |
Publication |
Sustainable Cities and Society |
Abbreviated Journal |
Sustainable Cities and Society |
| Volume |
42 |
Issue |
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Pages |
337-343 |
| Keywords |
Remote Sensing; Economics; Lighting |
| Abstract |
Light pollution is ranked high among recent forms of environmental degradation. While there have been many studies focusing on the diverse effects of artificial lighting on human health, wild life, etc., studies related to the social-economic impact of light pollution have been neglected. In the current paper, we assessed the relationship between economic development and light pollution. Using collected field data of illuminance levels as a measure of light pollution and land prices as an indicator of economic development, we drew conclusions about the effects of economic development on light pollution. The results did not show an inverted-U relationship between the two variables, hence denouncing the Environmental Kuznets Curve (EKC) theory. A regression analysis test showed an R-squared value of 0.322 at p > 0.215. Looking at the obtained results, which show no statistical significance between the two variables, we advise that local light pollution regulation laws and policies be equally stringent throughout districts/cities, regardless of economic status. |
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| ISSN |
2210-6707 |
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GFZ @ kyba @ |
Serial |
1969 |
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| Author |
Duan, H.; Cao, Z.; Shen, M.; Liu, D.; Xiao, Q. |
| Title |
Detection of illicit sand mining and the associated environmental effects in China's fourth largest freshwater lake using daytime and nighttime satellite images |
Type |
Journal Article |
| Year |
2019 |
Publication |
Science of The Total Environment |
Abbreviated Journal |
Science of The Total Environment |
| Volume |
647 |
Issue |
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Pages |
606-618 |
| Keywords |
Remote Sensing; Regulation |
| Abstract |
Illegal sand mining activities are rampant in coastal and inland water around the world and result in increased water turbidity, reduced water transparency, damage to fish spawning sites and adverse effects on the health of aquatic ecosystems. However, many sand dredging vessels hide during the day and work at night, rendering conventional monitoring measures ineffective. In this study, illegal sand dredging activities and the associated aquatic environmental effects were investigated in Lake Hongze (the fourth largest freshwater lake in China) using both conventional daytime satellite data, including MODIS/Aqua and Landsat TM/ETM data as well as VIIRS Day/Night Band (DNB) nighttime light (NTL) data, the following results were obtained. (1) The Landsat data revealed that sand dredging vessels first appeared in February 2012 and their number (monthly average: 658) peaked in 2016, and sand dredging stopped after March 2017. (2) The VIIRS NTL data were satisfactory for monitoring nighttime illegal dredging activities, and they more accurately reflected the temporal and spatial distribution characteristics of dredging vessels due to their high frequency. (3) Observations from the MODIS data acquired since 2002 showed three distinct stages of changes in the suspended particulate matter (SPM) concentrations of Lake Hongze that were consistent with the temporal distributions of sand dredging vessels. (4) The contribution of dredging vessels to the increases in SPM concentration was quantitatively determined, and nighttime sand dredging activities were found to have disturbed the waters more significantly. (5) The effectiveness of government measures implemented at various stages to control illegal sand dredging activities were scientifically evaluated. This study provides technological support for government monitoring and the control of illegal sand dredging activities and can serve as a valuable reference for water bodies similar to Lake Hongze worldwide. The evaluation method developed in this study could potentially be applied at a global scale. |
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| ISSN |
0048-9697 |
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no |
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GFZ @ kyba @ |
Serial |
1970 |
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| Author |
McMahon, D.M. |
| Title |
Illuminating the Enlightenment: Public Lighting Practices in the Siècle Des Lumières* |
Type |
Journal Article |
| Year |
2018 |
Publication |
Past & Present |
Abbreviated Journal |
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| Volume |
240 |
Issue |
1 |
Pages |
119-159 |
| Keywords |
History; Psychology |
| Abstract |
This article explores the relationship between the Enlightenment as a cultural and intellectual phenomenon and actual illumination in the long 18th century. Focused on street lighting in Paris, it nonetheless seeks to situate the French case in the broader context of developments in public lighting in the French provinces, Europe, and the Atlantic World. In the concerted effort to illuminate dark streets, the Enlightenment was operationalized in ways that bore fundamentally on commerce, sociability, and perceptions of progress, enlightened government, and enlightened space. At the same time, the attempt to illuminate formerly dark spaces generated reactions. A ‘dialectic of illumination’ was the counterpart to the dialectic of Enlightenment, fostering resistance to the new regime of light and its efforts to impose, through human ingenuity and instrumental reason, greater security and social control. |
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0031-2746 |
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no |
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GFZ @ kyba @ |
Serial |
1972 |
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| Author |
Kong, Y.; Stasiak, M.; Dixon, M.A.; Zheng, Y. |
| Title |
Blue light associated with low phytochrome activity can promote elongation growth as shade-avoidance response: A comparison with red light in four bedding plant species |
Type |
Journal Article |
| Year |
2018 |
Publication |
Environmental and Experimental Botany |
Abbreviated Journal |
Environmental and Experimental Botany |
| Volume |
155 |
Issue |
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Pages |
345-359 |
| Keywords |
Plants |
| Abstract |
o explore the action mode of blue light on elongation growth of bedding plants, the plant growth and morphology traits of petunia (Petunia × hybrida, ‘Duvet Red’), calibrachoa (Calibrachoa × hybrida, ‘Kabloom Deep Blue’), geranium (Pelargonium × hortorum, ‘Pinto Premium Salmon’), and marigold (Tagetes erecta, ‘Antigua Orange’) were compared under four light quality treatments: (1) R, “pure” red light (660 nm); (2) B, “pure” blue light (450 nm); (3) BR, “unpure” blue light created by mixing B with a low level of R to provide B/R ≈ 9; (4) BRF, “unpure” blue light created by adding a low level of far red light to BR with red/far red ≈ 1. Continuous (24-h) light-emitting diode lighting with either 100 or 50 μmol m−2 s−1 photosynthetic photon flux density at ≈ 23℃ was used with the above treatments. After 14–20 day of lighting treatment, B promoted elongation growth compared to R, as demonstrated by a greater canopy height, main stem length, internode length, and daily main stem extension rate. However, BR showed similar or inhibitory effects on these traits relative to R, while BRF exhibited similar promotion effects as B. The calculated phytochrome photoequilibrium, an indication of phytochrome activity, was higher for R (0.89) and BR (0.74) than for B (0.49) and BRF (0.63). Adding red (or far red) light reversed the effects of B (or BR) on elongation growth and the phytochrome photoequilibrium, suggesting that blue light promotion of elongation growth is related to the lower phytochrome activity. Also, B and BRF, when compared to R or BR, promoted elongation growth to a greater degree at 50 than 100 μmol m−2 s−1 for petunia and calibrachoa. In addition to the promoted elongation growth, B and BRF reduced side branch number, biomass allocation to side branches, leaf epinasty, leaf angle, and/or leaf chlorophyll content relative to R or BR, but increased individual leaf area, petiole length, and/or biomass allocation to main stem, which varied with different species. It suggests that the promoted elongation growth by blue light associated with lower phytochrome activity is one of shade-avoidance responses with varying sensitivity among species. |
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Edition |
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| ISSN |
0098-8472 |
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no |
| Call Number |
GFZ @ kyba @ |
Serial |
1973 |
| Permanent link to this record |
