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| Author |
Cammaerts, M. C., & Cammaerts, R. |
| Title |
Effect of nocturnal lighting on an ant’s ethological and physiological traits |
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Journal Article |
| Year |
2019 |
Publication |
MOJ Ecology & Environmental Sciences |
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| Volume |
4 |
Issue |
5 |
Pages |
211-218 |
| Keywords |
Animals |
| Abstract |
Artificial nocturnal lighting affects the nature, an impact best studied on vertebrates that are directly depending on the presence or absence of light. Here, we examined on an ant species taken as a model the effects of artificial nocturnal lighting on eleven physiological and ethological traits. Ant workers maintained under nocturnal lighting showed a decrease or a change in their level of activity, food consumption, locomotion, orientation ability, audacity, tactile perception, social relationship, learning and memory. This was largely observed during the night but the effects persisted, at a lower extend, during the day |
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IDA @ intern @ |
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2735 |
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Shith, S. & Ramli, N. A. |
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Night-time ground-level ozone trends and variability over the urban sites |
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Journal Article |
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2019 |
Publication |
Journal of Sustainability Science and Management |
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14 |
Issue |
5 |
Pages |
195-201 |
| Keywords |
Atmospheric chemistry; air pollution |
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This study evaluates the variation of night-time ground-level ozone (O3), nitrogen dioxide (NO2 ) and nitric oxide (NO) from year 2015 to 2016. During this period, the recorded maximum night-time ground-level O3 was 55 ppb at Putrajaya (PT), which have more areas with higher brightness level compared to another urban site, Alor Setar (AS) at 21 ppb. Lower NO concentrations restricted the sinking agents, thus, reducing the depletion rates and resulted in O3 to remain in the atmosphere. The contributor toward night-time ground-level O3 concentration in the urban site was not only NO2 concentration, as light pollution might enhance the O3 formations. The photochemistry rate was commonly accounted to be zero due to the absence of photochemical reactions at night. However, the minimum photochemistry rate in both urban was recorded at the ranged from 1.50-2.70 ppb, indicating that O3 was also titrated at night even though the value is not as high as during the day. |
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IDA @ intern @ |
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2734 |
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Grubisic, M.; Haim, A.; Bhusal, P.; Dominoni, D.M.; Gabriel, K.M.A.; Jechow, A.; Kupprat, F.; Lerner, A.; Marchant, P.; Riley, W.; Stebelova, K.; van Grunsven, R.H.A.; Zeman, M.; Zubidat, A.E.; Hölker, F. |
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Light Pollution, Circadian Photoreception, and Melatonin in Vertebrates |
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Journal Article |
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2019 |
Publication |
Sustainability |
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Sustainability |
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11 |
Issue |
22 |
Pages |
6400 |
| Keywords |
Animals; Review |
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Artificial light at night (ALAN) is increasing exponentially worldwide, accelerated by the transition to new efficient lighting technologies. However, ALAN and resulting light pollution can cause unintended physiological consequences. In vertebrates, production of melatonin—the “hormone of darkness” and a key player in circadian regulation—can be suppressed by ALAN. In this paper, we provide an overview of research on melatonin and ALAN in vertebrates. We discuss how ALAN disrupts natural photic environments, its effect on melatonin and circadian rhythms, and different photoreceptor systems across vertebrate taxa. We then present the results of a systematic review in which we identified studies on melatonin under typical light-polluted conditions in fishes, amphibians, reptiles, birds, and mammals, including humans. Melatonin is suppressed by extremely low light intensities in many vertebrates, ranging from 0.01–0.03 lx for fishes and rodents to 6 lx for sensitive humans. Even lower, wavelength-dependent intensities are implied by some studies and require rigorous testing in ecological contexts. In many studies, melatonin suppression occurs at the minimum light levels tested, and, in better-studied groups, melatonin suppression is reported to occur at lower light levels. We identify major research gaps and conclude that, for most groups, crucial information is lacking. No studies were identified for amphibians and reptiles and long-term impacts of low-level ALAN exposure are unknown. Given the high sensitivity of vertebrate melatonin production to ALAN and the paucity of available information, it is crucial to research impacts of ALAN further in order to inform effective mitigation strategies for human health and the wellbeing and fitness of vertebrates in natural ecosystems. |
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2071-1050 |
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GFZ @ kyba @ |
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2733 |
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| Author |
Frost, S.W. |
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Insects taken in light traps at the Archbold Biological Station, Highlands County, Florida |
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Journal Article |
| Year |
1964 |
Publication |
Florida Entomologist |
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47 |
Issue |
2 |
Pages |
129-161 |
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Animals |
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GFZ @ kyba @ |
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2732 |
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Ma, X.; Li, C.; Tong, X.; Liu, S. |
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A New Fusion Approach for Extracting Urban Built-up Areas from Multisource Remotely Sensed Data |
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Journal Article |
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2019 |
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Remote Sensing |
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Remote Sensing |
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11 |
Issue |
21 |
Pages |
2516 |
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Remote Sensing |
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Recent advances in the fusion technology of remotely sensed data have led to an increased availability of extracted urban information from multiple spatial resolutions and multi-temporal acquisitions. Despite the existing extraction methods, there remains the challenging task of fully exploiting the characteristics of multisource remote sensing data, each of which has its own advantages. In this paper, a new fusion approach for accurately extracting urban built-up areas based on the use of multisource remotely sensed data, i.e., the DMSP-OLS nighttime light data, the MODIS land cover product (MCD12Q1) and Landsat 7 ETM+ images, was proposed. The proposed method mainly consists of two components: (1) the multi-level data fusion, including the initial sample selection, unified pixel resolution and feature weighted calculation at the feature level, as well as pixel attribution determination at decision level; and (2) the optimized sample selection with multi-factor constraints, which indicates that an iterative optimization with the normalized difference vegetation index (NDVI), the modified normalized difference water index (MNDWI), and the bare soil index (BSI), along with the sample training of the support vector machine (SVM) and the extraction of urban built-up areas, produces results with high credibility. Nine Chinese provincial capitals along the Silk Road Economic Belt, such as Chengdu, Chongqing, Kunming, Xining, and Nanning, were selected to test the proposed method with data from 2001 to 2010. Compared with the results obtained by the traditional threshold dichotomy and the improved neighborhood focal statistics (NFS) method, the following could be concluded. (1) The proposed approach achieved high accuracy and eliminated natural elements to a great extent while obtaining extraction results very consistent to those of the more precise improved NFS approach at a fine scale. The average overall accuracy (OA) and average Kappa values of the extracted urban built-up areas were 95% and 0.83, respectively. (2) The proposed method not only identified the characteristics of the urban built-up area from the nighttime light data and other daylight images at the feature level but also optimized the samples of the urban built-up area category at the decision level, making it possible to provide valuable information for urban planning, construction, and management with high accuracy. |
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2072-4292 |
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GFZ @ kyba @ |
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2731 |
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