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Barros, R.; Medrano, F.; Norambuena, H.V.; Peredo, R.; Silva, R.; de Groote, F.; Schmitt, F. |
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Title |
Breeding Phenology, Distribution and Conservation Status of Markham's Storm-Petrel Oceanodroma markhami in the Atacama Desert |
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Journal Article |
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Year |
2019 |
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Ardea |
Abbreviated Journal |
Ardea |
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107 |
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1 |
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75 |
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Animals |
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0373-2266 |
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GFZ @ kyba @ |
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2434 |
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Author |
Marín-Gómez, O.H, & MacGregor-Fors, I. |
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Title |
How Early Do Birds Start Chirping? Dawn Chorus Onset and Peak Times in a Neotropical City |
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Journal Article |
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Year |
2019 |
Publication |
Ardeola |
Abbreviated Journal |
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Volume |
66 |
Issue |
2 |
Pages |
327-341 |
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Animals |
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Urbanisation poses important challenges for animal communication. Avian dawn choruses are a prominent component of urban soundscapes and have received attention in recent urban ecology studies. Current evidence based on comparisons of urban and non-urban sites suggest that urbanisation is associated with earlier dawn chorus singing activity. However, this phenomenon remains mainly unexplored in tropical cities. We here assessed dawn chorus onset and peak times in two contrasting conditions of the urbanisation intensity gradient (i.e., intra-urban and peri-urban forested areas) of a Neotropical city, Xalapa in Mexico, assessing relationships with noise at sunrise and artificial light at night. We found no differences in dawn chorus onset or singing peak times when contrasting intra- and peri-urban areas. However, we found non-significant trends for earlier chorus onsets and peak times with increasing noise levels. Our results show no relationship between artificial light at night and dawn chorus timing, adding evidence to recent studies showing that light pollution does not seem to be determinant in the dawn choruses of tropical birds. Further research is needed to include a wider array of urbanisation conditions and drivers of the singing routines of urban tropical birds. —Marín-Gómez, O.H. & MacGregor-Fors, I. (2019). How early do birds start chirping? Dawn chorus onset and peak times in a Neotropical city. |
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IDA @ intern @ |
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2553 |
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You, X.; Monahan, K.M. |
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Title |
A thirst for development: mapping water stress using night-time stable lights as predictors of province-level water stress in China |
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Journal Article |
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Year |
2017 |
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Abbreviated Journal |
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49 |
Issue |
4 |
Pages |
477-485 |
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Keywords |
Remote Sensing |
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Given the rapid development within China, the inequality of available water resources has been increasingly of interest. Current methods for assessing water stress are inadequate for province‐scale rapid monitoring. A more responsive indicator at a finer scale is needed to understand the distribution of water stress in China. This paper selected Defense Meteorological Satellite Program Operational Line‐scan System night‐time stable lights as a proxy for water stress at the province level in China from 2004 to 2012, as night‐time lights are closely linked with population density, electricity consumption and other social, economic and environmental indicators associated with water stress. The linear regression results showed the intensity of night‐time lights can serve as a predictive tool to assess water stress across provinces with an R2 from 0.797 to 0.854. The model worked especially well in some regions, such as East China, North China and South West China. Nonetheless, confounding factors interfered with the predictive relationship, including population density, level of economic development, natural resource endowment and industrial structures, etc. The model was not greatly improved by building a multi‐variable linear regression including agricultural and industrial indicators. A straightforward predictor of water stress using remotely sensed data was developed. |
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0004-0894 |
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GFZ @ kyba @ |
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2030 |
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Author |
Aboushelib, M.F.; Abozaid, A.A.; Nawar, S.; Hendy, Y.H.M.; Morcos, A.B. |
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Title |
Preliminary site selection for an observatory in the Egyptian Eastern Desert |
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Journal Article |
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Year |
2019 |
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Astrophysics and Space Science |
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Astrophys Space Sci |
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364 |
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10 |
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Skyglow |
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This work aims for choosing preliminary sites that can be candidates for a new astronomical observatory that will replace the Kottamia observatory. The candidate sites have been selected to be investigated after proposing a few criteria. Concerning light pollution and elevation of the sites as the main factors, we chose the candidate sites depending on the zenith sky brightness and the elevation. The night sky brightness has been measured using a Sky Quality Meter at different altitude degrees and the values of the zenith sky brightness were compared to those of different observatory sites. Our night sky brightness observations were found to be in agreement with the satellite’s data and comparable to those of dark sites, with average values of 22.07, 22.03, 21.57 and 21.58 magSQM/arcsec2. We also have obtained the Aerosol Optical Depth (AOD) and extinction coefficient due to the aerosol for the candidate sites using satellite data (Terra/MODIS). |
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0004-640X |
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GFZ @ kyba @ |
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2690 |
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Author |
Paranunzio, R.; Ceola, S.; Laio, F.; Montanari, A. |
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Title |
Evaluating the Effects of Urbanization Evolution on Air Temperature Trends Using Nightlight Satellite Data |
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Journal Article |
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Year |
2019 |
Publication |
Atmosphere |
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Atmosphere |
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10 |
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3 |
Pages |
117 |
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Remote Sensing |
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Confounding factors like urbanization and land-use change could introduce uncertainty to the estimation of global temperature trends related to climate change. In this work, we introduce a new way to investigate the nexus between temporal trends of temperature and urbanization data at the global scale in the period from 1992 to 2013. We analyze air temperature data recorded from more than 5000 weather stations worldwide and nightlight satellite measurements as a proxy for urbanization. By means of a range of statistical methods, our results quantify and outline that the temporal evolution of urbanization affects temperature trends at multiple spatial scales with significant differences at regional and continental scales. A statistically significant agreement in temperature and nightlight trends is detected, especially in low and middle-income regions, where urbanization is rapidly growing. Conversely, in continents such as Europe and North America, increases in temperature trends are typically detected along with non-significant nightlight trends. |
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2073-4433 |
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GFZ @ kyba @ |
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2249 |
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