| Records |
| Author |
Straka, T.M.; Greif, S.; Schultz, S.; Goerlitz, H.R.; Voigt, C.C. |
| Title |
The effect of cave illumination on bats |
Type |
Journal Article |
| Year |
2019 |
Publication |
Global Ecology and Conservation |
Abbreviated Journal |
Global Ecology and Conservation |
| Volume |
21 |
Issue |
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Pages |
e00808 |
| Keywords |
Animals; Lighting |
| Abstract |
Artificial light at night has large impacts on nocturnal wildlife such as bats, yet its effect varies with wavelength of light, context, and across species involved. Here, we studied in two experiments how wild bats of cave-roosting species (Rhinolophus mehelyi, R. euryale, Myotis capaccinii and Miniopterus schreibersii) respond to LED lights of different colours. In dual choice experiments, we measured the acoustic activity of bats in response to neutral-white, red or amber LED at a cave entrance and in a flight room – mimicking a cave interior. In the flight room, M. capaccinii and M. schreibersii preferred red to white light, but showed no preference for red over amber, or amber over white light. In the cave entrance experiment, all light colours reduced the activity of all emerging species, yet red LED had the least negative effect. Rhinolophus species reacted most strongly, matching their refusal to fly at all under any light treatment in the flight room. We conclude that the placement and light colour of LED light should be considered carefully in lighting concepts for caves both in the interior and at the entrance. In a cave interior, red LED light could be chosen – if needed at all – for careful temporary illumination of areas, yet areas important for bats should be avoided based on the precautionary principle. At cave entrances, the high sensitivity of most bat species, particularly of Rhinolophus spp., towards light sources almost irrespective of colour, calls for utmost caution when illuminating cave entrances. |
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| Publisher |
Elsevier |
Place of Publication |
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Editor |
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| Language |
English |
Summary Language |
English |
Original Title |
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Edition |
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ISSN  |
2351-9894 |
ISBN |
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Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
2700 |
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| Author |
Li, G.; Gao, J.; Li, L.; Hou, P. |
| Title |
Human pressure dynamics in protected areas of China based on nighttime light |
Type |
Journal Article |
| Year |
2020 |
Publication |
Global Ecology and Conservation |
Abbreviated Journal |
Global Ecology and Conservation |
| Volume |
in press |
Issue |
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Pages |
e01222 |
| Keywords |
Conservation; Remote Sensing |
| Abstract |
Increasing light is widely recognised to be harmful to the wilderness of protected areas (PAs). However, minimal studies revealed the spatiotemporal distribution and variation of nighttime lights (NTLs) at the regional and single protected area levels on a continuous time. We assessed the extent and intensity of NTLs within and around the PAs during 1992-2012 in mainland China. Lighted area index (LAI), lighted intensity index (LII), potential LAI (PLAI) and potential LII (PLII) were developed as indicators to represent the total quantity and the intensity in a PA and in a 5-km buffer zone around the PA on the basis of the Defense Meteorological Program Operational Line-Scan System NTL data. NTL in PAs covered 7192 km2 in 2012, accounting for 0.73% of the total area of PAs. The highest values of LAI and LII were observed in Northeast and South Central China among the six geographical divisions. The LAI and LII increased by 3.22 and 3.51 times from 1992 to 2012, which showed that the area and intensity of NTL in PAs experienced simultaneous growth. We identified a significant increase of NTL within 36% of PAs and outside 60% of PAs, indicating the persistent increase in the intensity of human disturbance in and around these PAs. The NTL growth rates in marine and coastal and wild plant PAs were the greatest and lowest among different types of PAs, with values of 76.47% and 15.79%, respectively. We suggested that development of targeted countermeasures for each PA should comprehensively consider the conservation objectives, the type of PA, and the lighting conditions inside and outside the PA. The findings can provide useful information for targeting management strategies to alleviate light pollution and human disturbance. |
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| ISSN |
2351-9894 |
ISBN |
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Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
3075 |
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| Author |
Elvidge, C. D.; Erwin, E.H.; Baugh, K.E.; Ziskin, D.; Tuttle, B.T.; Ghosh, T.; Sutton, P.C. |
| Title |
Overview of DMSP nightime lights and future possibilities |
Type |
Conference Article |
| Year |
2009 |
Publication |
Joint Urban Remote Sensing Event |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
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| Keywords |
Remote Sensing; DMSP; DMSP-OLS; Night lights |
| Abstract |
The Defense Meteorological Satellite Program (DMSP) Operational Linescan System (OLS) has a unique capability to collect low-light imaging data of the earth at night. The OLS and its predecessors have collected this style of data on a nightly global basis since 1972. The digital archive of OLS data extends back to 1992. Over the years several global nighttime lights products have been generated. NGDC has now produced a set of global cloud-free nighttime lights products, specifically processed for the detection of changes in lighting emitted by human settlements, spanning 1992-93 to 2008. While the OLS is far from ideal for observing nighttime lights, the DMSP nighttime lights products have been successfully used in modeling the spatial distribution of population density, carbon emissions, and economic activity. |
| Address |
Earth Observation Group NOAA National Geophysical Data Center Boulder, Colorado 80305 USA; chris.elvidge(at)noaa.gov |
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IEEE |
Place of Publication |
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| Language |
English |
Summary Language |
English |
Original Title |
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Edition |
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| ISSN |
2334-0932 |
ISBN |
978-1-4244-3461-9 |
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no |
| Call Number |
IDA @ john @ |
Serial |
2668 |
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| Author |
Letu, H.; Nakajima, T.Y.; Nishio, F. |
| Title |
Regional-Scale Estimation of Electric Power and Power Plant CO2Emissions Using Defense Meteorological Satellite Program Operational Linescan System Nighttime Satellite Data |
Type |
Journal Article |
| Year |
2014 |
Publication |
Environmental Science & Technology Letters |
Abbreviated Journal |
Environ. Sci. Technol. Lett. |
| Volume |
1 |
Issue |
5 |
Pages |
259-265 |
| Keywords |
Remote Sensing |
| Abstract |
Estimation of electric power and power plant CO2 emissions using satellite remote sensing data is essential for the management of energy consumption and greenhouse gas monitoring. For estimation, the relationship between Defense Meteorological Satellite Program Operational Linescan System (DMSP/OLS) annual nighttime stable light product (NSL) for 2006 and statistical data on power generation, power consumption, and power plant CO2 emissions in 10 electric power supply regions of Japan was investigated. Unlike other power plants, thermal plants directly emit CO2 by burning fossil fuels when generating electricity. Among the nighttime lights in the NSL, only light from thermal power is related to power plant CO2 emission. The percentage of thermal power generation to total power generation (K%) is thus a key parameter for estimating nighttime light by power consumption from thermal power plants. In this study, the DMSP/OLS annual nighttime radiance-calibrated product (RCI) for 2006 and the NSL data corrected by K% were employed to estimate electric power and power plant CO2 emissions. Results indicated that the RCI data can offer more accurate estimates of electric power consumption than can the NSL data. It was also found that NSL and RCI data corrected by K% are good proxies for estimating power plant CO2 emissions. |
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| ISSN |
2328-8930 |
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no |
| Call Number |
GFZ @ kyba @ |
Serial |
2491 |
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| Author |
Sánchez de Miguel, A.; Bará, S.; Aubé, M.; Cardiel, N.; Tapia, C.E.; Zamorano, J.; Gaston, K.J. |
| Title |
Evaluating Human Photoreceptoral Inputs from Night-Time Lights Using RGB Imaging Photometry |
Type |
Journal Article |
| Year |
2019 |
Publication |
Journal of Imaging |
Abbreviated Journal |
J. Imaging |
| Volume |
5 |
Issue |
4 |
Pages |
49 |
| Keywords |
Human Health; Remote Sensing; Instrumentation |
| Abstract |
Night-time lights interact with human physiology through different pathways starting at the retinal layers of the eye; from the signals provided by the rods; the S-, L- and M-cones; and the intrinsically photosensitive retinal ganglion cells (ipRGC). These individual photic channels combine in complex ways to modulate important physiological processes, among them the daily entrainment of the neural master oscillator that regulates circadian rhythms. Evaluating the relative excitation of each type of photoreceptor generally requires full knowledge of the spectral power distribution of the incoming light, information that is not easily available in many practical applications. One such instance is wide area sensing of public outdoor lighting; present-day radiometers onboard Earth-orbiting platforms with sufficient nighttime sensitivity are generally panchromatic and lack the required spectral discrimination capacity. In this paper, we show that RGB imagery acquired with off-the-shelf digital single-lens reflex cameras (DSLR) can be a useful tool to evaluate, with reasonable accuracy and high angular resolution, the photoreceptoral inputs associated with a wide range of lamp technologies. The method is based on linear regressions of these inputs against optimum combinations of the associated R, G, and B signals, built for a large set of artificial light sources by means of synthetic photometry. Given the widespread use of RGB imaging devices, this approach is expected to facilitate the monitoring of the physiological effects of light pollution, from ground and space alike, using standard imaging technology. |
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Original Title |
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Series Issue |
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Edition |
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| ISSN |
2313-433X |
ISBN |
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| Notes |
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no |
| Call Number |
GFZ @ kyba @ |
Serial |
2294 |
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