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Author Matalin, A. V. url  openurl
  Title (down) Variations in flight ability with sex and age in ground beetles ( Coleoptera , Carabidae ) of south-western Moldova Type Journal Article
  Year 2003 Publication Pedobiologia Abbreviated Journal  
  Volume 47 Issue 4 Pages 311–320  
  Keywords Animals  
  Abstract On the basis of morphometric measurements of 69 Carabidae species, the dispersal power of beetles at different stages of

their physiological development was estimated. As quantitative criteria for estimation of dispersal possibilities the indices

of potential migrants (

Ipm

) and conventional load on the wing (

Pf

) were introduced. Among constantly macropterous cara-

bids, three groups of beetles with different levels of wing muscles development were distinguished. Monomorphic

macropterous (MMm) species are characterized by the highest flight activity of both sexes throughout imago stage. Though

in many di(poly)morphic carabids (DPM species) a proportion of macropterous females in the populations is large, the wing

muscles are better developed in macropterous males, which ensures similar migration possibilities of males and females.

In populations of polymorphic macropterous (MPm) and DPM species dispersion is carried out mostly by teneral and im-

mature beetles. The maximum loss in flight ability occurs in mature females with developed eggs in ovaries. Large species

of ground beetles produce relatively large eggs, which are deposited in a single batch. After the development of gonads,

body mass in these species increases sharply, while wing muscles decline. In small-sized carabid species gonads develop

gradually and they lay relatively small eggs continuously. The changes in body mass in these species are usually small.

Therefore, the temporal changes in the

Pf

-index are more pronounced in large- and medium-sized carabid species com-

pared to small-sized beetles. The dispersal power of carabid beetles in different regions is discussed.
 
  Address  
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  Notes Approved no  
  Call Number LoNNe @ kagoburian @ Serial 609  
Permanent link to this record
 

 
Author Spitschan, M.; Aguirre, G.K.; Brainard, D.H.; Sweeney, A.M. url  doi
openurl 
  Title (down) Variation of outdoor illumination as a function of solar elevation and light pollution Type Journal Article
  Year 2016 Publication Scientific Reports Abbreviated Journal Sci Rep  
  Volume 6 Issue Pages 26756  
  Keywords Skyglow; Measurements; light pollution; daylight; twilight; sky brightness; spectral irradiance; CIE  
  Abstract The illumination of the environment undergoes both intensity and spectral changes during the 24 h cycle of a day. Daylight spectral power distributions are well described by low-dimensional models such as the CIE (Commission Internationale de l'Eclairage) daylight model, but the performance of this model in non-daylight regimes is not characterised. We measured downwelling spectral irradiance across multiple days in two locations in North America: One rural location (Cherry Springs State Park, PA) with minimal anthropogenic light sources, and one city location (Philadelphia, PA). We characterise the spectral, intensity and colour changes and extend the existing CIE model for daylight to capture twilight components and the spectrum of the night sky.  
  Address Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA  
  Corporate Author Thesis  
  Publisher Nature Place of Publication Editor  
  Language English Summary Language English Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 2045-2322 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:27272736 Approved no  
  Call Number IDA @ john @ Serial 1464  
Permanent link to this record
 

 
Author Coesfeld, J.; Anderson, S.; Baugh, K.; Elvidge, C.; Schernthanner, H.; Kyba, C. url  doi
openurl 
  Title (down) Variation of Individual Location Radiance in VIIRS DNB Monthly Composite Images Type Journal Article
  Year 2018 Publication Remote Sensing Abbreviated Journal Remote Sensing  
  Volume 10 Issue 12 Pages 1964  
  Keywords Remote Sensing; Instrumentation  
  Abstract With the growing size and use of night light time series from the Visible Infrared Imaging Radiometer Suite Day/Night Band (DNB), it is important to understand the stability of the dataset. All satellites observe differences in pixel values during repeat observations. In the case of night light data, these changes can be due to both environmental effects and changes in light emission. Here we examine the stability of individual locations of particular large scale light sources (e.g., airports and prisons) in the monthly composites of DNB data from April 2012 to September 2017. The radiances for individual pixels of most large light emitters are approximately normally distributed, with a standard deviation of typically 15–20% of the mean. Greenhouses and flares, however, are not stable sources. We observe geospatial autocorrelation in the monthly variations for nearby sites, while the correlation for sites separated by large distances is small. This suggests that local factors contribute most to the variation in the pixel radiances and furthermore that averaging radiances over large areas will reduce the total variation. A better understanding of the causes of temporal variation would improve the sensitivity of DNB to lighting changes.  
  Address  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 2072-4292 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number GFZ @ kyba @ Serial 2129  
Permanent link to this record
 

 
Author De Miguel, A. url  openurl
  Title (down) Variaci{ó}n del brillo del fondo de cielo en el c{é}nit con la fase y altura de la Luna. Type Journal Article
  Year 2012 Publication Abbreviated Journal  
  Volume Issue Pages  
  Keywords Remote Sensing  
  Abstract  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ kagoburian @ Serial 922  
Permanent link to this record
 

 
Author Secondi, J.; Dupont, V.; Davranche, A.; Mondy, N.; Lengagne, T.; Thery, M. url  doi
openurl 
  Title (down) Variability of surface and underwater nocturnal spectral irradiance with the presence of clouds in urban and peri-urban wetlands Type Journal Article
  Year 2017 Publication PloS one Abbreviated Journal PLoS One  
  Volume 12 Issue 11 Pages e0186808  
  Keywords Skyglow; Ecology  
  Abstract Artificial light at night (ALAN) is an increasing phenomenon worldwide. It causes a wealth of biological and ecological effects that may eventually affect populations and ecosystems. Despite the growing concern about ALAN, little is known about the light levels species are exposed to at night, especially for wetlands and underwater habitats. We determined nocturnal irradiance in urban and peri-urban wetlands above and under water, and assessed the effect of cloud cover on the variability of ALAN across the urban gradient. Even in aquatic habitats, cloud cover could increase irradiance beyond values observed during clear full moon nights. We report a negative relationship between baseline irradiance and the increase in irradiance during overcast nights. According to this result and previous studies, we propose that the change in the variation regime of ALAN between the urban center and rural land at its periphery is a usual feature. We discuss the ecological and evolutionary implications of this spatial variation in the urban and peri-urban environment.  
  Address UMR 7179 CNRS-MNHN, Mecanismes Adaptatifs et Evolution, Brunoy, France  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1932-6203 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:29117235; PMCID:PMC5695598 Approved no  
  Call Number LoNNe @ kyba @ Serial 1801  
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