| Records |
| Author |
Rodríguez, A.; Rodríguez, B.; Curbelo, Á.J.; Pérez, A.; Marrero, S.; Negro, J.J.; Katzner, T. |
| Title |
Factors affecting mortality of shearwaters stranded by light pollution: Mortality of shearwaters attracted by light pollution |
Type |
Journal Article |
| Year |
2012 |
Publication |
Animal Conservation |
Abbreviated Journal |
Anim Conserv |
| Volume |
15 |
Issue |
5 |
Pages |
519-526 |
| Keywords |
Cory's shearwater; Calonectris diomedea; birds; petrels; collisions; animals |
| Abstract |
Every year and across the world, thousands of fledglings of different petrel species crash into human structures because they are disorientated by artificial lights during their first flights. As this phenomenon is rather predictable, rescue campaigns are organized to help birds to reach the ocean, but unfortunately, a low proportion gets hurt or dies. Despite the huge number of affected individuals, and the fact that the problem was detected a long time ago, little is known on this source of mortality. We have studied the factors (i.e. body condition, plumage development, fledging date and sex) influencing the mortality of Cory's Shearwater Calonectris diomedea fledglings stranded inland due to light pollution in Tenerife (Canary Islands) during two consecutive breeding seasons (2009 and 2010). Late fledglings showed lower values of a body condition index than early ones. No sex biases were detected, neither considering stranded birds overall, nor for recovery dates or in the body condition of rescued fledglings. Our results indicate that late birds stranded by lights showing abundant down are more susceptible to fatal collisions and that the lights do not selectively kill birds with lower body condition indices. An enhancement of veterinary care should be done during the last part of the fledging period when more fatal collisions occur, especially focused on fledglings with abundant down. More research to determine why some individuals end up disoriented around artificial lights and others do not is urgently needed to minimize or prevent fallouts. |
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| ISSN |
1367-9430 |
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Approved |
no |
| Call Number |
IDA @ john @ |
Serial |
55 |
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| Author |
Becker, A.; Whitfield, A.K.; Cowley, P.D.; Järnegren, J.; Naesje, T.F.; Crispo, E. |
| Title |
Potential effects of artificial light associated with anthropogenic infrastructure on the abundance and foraging behaviour of estuary-associated fishes |
Type |
Journal Article |
| Year |
2013 |
Publication |
Journal of Applied Ecology |
Abbreviated Journal |
J Appl Ecol |
| Volume |
50 |
Issue |
1 |
Pages |
43-50 |
| Keywords |
fish; biology; ecology |
| Abstract |
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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| Author |
Ren, Z.; Liu, Y.; Chen, B.; Xu, B. |
| Title |
Where Does Nighttime Light Come From? Insights from Source Detection and Error Attribution |
Type |
Journal Article |
| Year |
2020 |
Publication |
Remote Sensing |
Abbreviated Journal |
Remote Sensing |
| Volume |
12 |
Issue |
12 |
Pages |
1922 |
| Keywords |
Remote Sensing |
| Abstract |
Nighttime light remote sensing has aroused great popularity because of its advantage in estimating socioeconomic indicators and quantifying human activities in response to the changing world. Despite many advances that have been made in method development and implementation of nighttime light remote sensing over the past decades, limited studies have dived into answering the question: Where does nighttime light come from? This hinders our capability of identifying specific sources of nighttime light in urbanized regions. Addressing this shortcoming, here we proposed a parcel-oriented temporal linear unmixing method (POTLUM) to identify specific nighttime light sources with the integration of land use data. Ratio of root mean square error was used as the measure to assess the unmixing accuracy, and parcel purity index and source sufficiency index were proposed to attribute unmixing errors. Using the Visible Infrared Imaging Radiometer Suite (VIIRS) nighttime light dataset from the Suomi National Polar-Orbiting Partnership (NPP) satellite and the newly released Essential Urban Land Use Categories in China (EULUC-China) product, we applied the proposed method and conducted experiments in two China cities with different sizes, Shanghai and Quzhou. Results of the POTLUM showed its relatively robust applicability of detecting specific nighttime light sources, achieving an rRMSE of 3.38% and 1.04% in Shanghai and Quzhou, respectively. The major unmixing errors resulted from using impure land parcels as endmembers (i.e., parcel purity index for Shanghai and Quzhou: 54.48%, 64.09%, respectively), but it also showed that predefined light sources are sufficient (i.e., source sufficiency index for Shanghai and Quzhou: 96.53%, 99.55%, respectively). The method presented in this study makes it possible to identify specific sources of nighttime light and is expected to enrich the estimation of structural socioeconomic indicators, as well as better support various applications in urban planning and management. |
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2072-4292 |
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| Call Number |
GFZ @ kyba @ |
Serial |
3032 |
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| Author |
Wuchterl, G.; Reithofer, M. |
| Title |
Licht über Wien VII |
Type |
Journal Article |
| Year |
2020 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
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| Keywords |
Skyglow; Energy |
| Abstract |
231. Auf einen BlickDie Helligkeit des Wiener Nachthimmels hat sich stabilisiert. 2019 ist das zweite Jahr in Folge, in dem die Energie desLichts über Wien um weniger als 5 % zugenommen hat. Die Menge des künstlichen Lichts über Wien hat sich nach dem steilem Anstieg der Jahre 2009 bis 2014 auf hohem Niveau eingependelt..Es besteht ein enger Zusammenhang zwischen Licht- und Luftverschmutzung. Über 10 Jahre bestehende Korrelationen von Lichtimmissions- und Luftgüteindikatoren bestätigen dies. Auf dieser Erkenntnis beruht eine auf standardisierte Luft-güte-Bedingungen normierte Angabe der Globalstrahlung, mit der direkter auf die von der Stadt eingebrachten Lichtmenge geschlossen werden kann.Der Kunstlichthalo über Wien wurde mit einer neuen Methode vollständiger berechnet und enthält demnach deutlich mehr Energie als bisher angenommen. 500 Gigawattstunden und 100.000 Tonnen CO2-Äquivalent pro Jahr müssen als typischer Wert für eine Untergrenze angenommen werden. |
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Verein Kuffner-Sternwarte |
Place of Publication |
Vienna |
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German |
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no |
| Call Number |
GFZ @ kyba @ |
Serial |
3033 |
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| Author |
Kolláth, Z.; Kránicz, B. |
| Title |
On the feasibility of inversion methods based on models of urban sky glow |
Type |
Journal Article |
| Year |
2014 |
Publication |
Journal of Quantitative Spectroscopy and Radiative Transfer |
Abbreviated Journal |
Journal of Quantitative Spectroscopy and Radiative Transfer |
| Volume |
139 |
Issue |
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Pages |
27-34 |
| Keywords |
Light pollution; Radiative transfer; Light scattering |
| Abstract |
Multi-wavelength imaging luminance photometry of sky glow provides a huge amount of information on light pollution. However, the understanding of the measured data involves the combination of different processes and data of radiation transfer, atmospheric physics and atmospheric constitution. State-of-the-art numerical radiation transfer models provide the possibility to define an inverse problem to obtain information on the emission intensity distribution of a city and perhaps the physical properties of the atmosphere. We provide numerical tests on the solvability and feasibility of such procedures. |
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0022-4073 |
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no |
| Call Number |
IDA @ john @ |
Serial |
179 |
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