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Author Smit, A.N.; Broesch, T.; Siegel, J.M.; Mistlberger, R.E. url  doi
openurl 
  Title Sleep timing and duration in indigenous villages with and without electric lighting on Tanna Island, Vanuatu Type Journal Article
  Year 2019 Publication Scientific Reports Abbreviated Journal Sci Rep  
  Volume 9 Issue 1 Pages 17278  
  Keywords Human Health  
  Abstract It has been hypothesized that sleep in the industrialized world is in chronic deficit, due in part to evening light exposure, which delays sleep onset and truncates sleep depending on morning work or school schedules. If so, societies without electricity may sleep longer. However, recent studies of hunter-gatherers and pastoralists living traditional lifestyles without electricity report short sleep compared to industrialized population norms. To further explore the impact of lifestyles and electrification on sleep, we measured sleep by actigraphy in indigenous Melanesians on Tanna Island, Vanuatu, who live traditional subsistence horticultural lifestyles, in villages either with or without access to electricity. Sleep duration was long and efficiency low in both groups, compared to averages from actigraphy studies of industrialized populations. In villages with electricity, light exposure after sunset was increased, sleep onset was delayed, and nocturnal sleep duration was reduced. These effects were driven primarily by breastfeeding mothers living with electric lighting. Relatively long sleep on Tanna may reflect advantages of an environment in which food access is reliable, climate benign, and predators and significant social conflict absent. Despite exposure to outdoor light throughout the day, an effect of artificial evening light was nonetheless detectable on sleep timing and duration.  
  Address Department of Psychology, Simon Fraser University, Burnaby, BC, V5A1S6, Canada. mistlber@sfu.ca  
  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 2045-2322 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:31754265 Approved no  
  Call Number GFZ @ kyba @ Serial (down) 2764  
Permanent link to this record
 

 
Author Hu, X.; Qian, Y.; Pickett, S.T.A.; Zhou, W. url  doi
openurl 
  Title Urban mapping needs up-to-date approaches to provide diverse perspectives of current urbanization: A novel attempt to map urban areas with nighttime light data Type Journal Article
  Year 2020 Publication Landscape and Urban Planning Abbreviated Journal Landscape and Urban Planning  
  Volume 195 Issue Pages in press  
  Keywords Remote Sensing  
  Abstract Quantifying the spatial and temporal changes of urban extent is important for understanding the burgeoning process of urbanization. Numerous well-performing methods have been used to map urban areas and detect urban changes using nighttime light data, but many of these methods assume that the urban area is equivalent to regions with high percentages of impervious surfaces or developed land. We present an approach to efficiently map urban areas at the regional scale, which also provides opportunities to recognize urban extents from different theoretical perspectives. In our approach, appropriate demarcating criteria and urban indicators were chosen based on understanding the current state of urbanization of the study area. After object-based segmentation and detection of initial urban centers, urban patches are discerned by expanding from these initial urban centers through a grouping algorithm, delineating the relative fringes of the urban area. We tested this new approach for mainland China, using 2010 Defense Meteorological Satellite Program/Operational Linescan System nighttime light data and county-level administrative units. We found a total urban area of 146,806  spread across 2489 counties and amounting to 1.5% of the land in mainland China. The delineated boundary of the urban patches had different values by compass direction. Mean values of fringes and sizes of different urban patches varied greatly across regions. We detected all provincial capitals, 97.3% of the prefecture-level cities and 91.0% of the county-level cities. This approach is thus capable of identifying urban patches with reliable accuracy at the regional scale.  
  Address  
  Corporate Author Thesis  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0169-2046 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number GFZ @ kyba @ Serial (down) 2763  
Permanent link to this record
 

 
Author Ruan, Y.L.; Zou, Y.H. url  doi
openurl 
  Title Monitoring The Spatio-Temporal Trajectory Of Urban Area Hotspots In Wuhan, China Using Time-Series Nighttime Light Images Type Journal Article
  Year 2019 Publication ISPRS – International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences Abbreviated Journal Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.  
  Volume Xlii-4/W20 Issue Pages 71-76  
  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 2194-9034 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number GFZ @ kyba @ Serial (down) 2762  
Permanent link to this record
 

 
Author Torres-Farfan, C.; Mendez, N.; Ehrefeld, P.; Seron-Ferre, M. url  doi
openurl 
  Title In utero circadian changes; facing light pollution Type Journal Article
  Year 2019 Publication Current Opinion in Physiology Abbreviated Journal Current Opinion in Physiology  
  Volume 13 Issue Pages 128-134  
  Keywords Human Health; Review; In Utero; Pregnancy; Circadian Rhythm  
  Abstract Regardless of the molecular and physiological mechanisms involved, maternal fetal circadian systems interactions are recognized as crucial crosstalk for fetal development, and in turn, it may be a key factor determining fitting health in adulthood. However, in the last 100 years, life on the planet has altered the natural light-dark cycle by increasing light at night inducing disorganization of the circadian system, i.e. chronodisruption, including perturbation of the melatonin circadian rhythm by decreasing its nocturnal peak. The reduction in melatonin is associated with gradual losses in antioxidant protection, immunological and anti-inflammatory effects and as stated by WHO, the lack of nocturnal peak of melatonin is a deleterious signal that may induce chronic disease and cancer. Collectively the current review provides evidence about the role played by maternal circadian rhythms in fetal development and the impact of fetal-maternal desynchronization in the health and diseases of the offspring.  
  Address Laboratory of Developmental Chronobiology, Faculty of Medicine, Universidad Austral de Chile, Valdivia, Chile; claudia.torres(at)uach.cl  
  Corporate Author Thesis  
  Publisher Elsever Place of Publication Editor  
  Language English Summary Language English Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 2468-8673 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number GFZ @ kyba @ Serial (down) 2761  
Permanent link to this record
 

 
Author Moaraf, S.; Vistoropsky, Y.; Pozner, T.; Heiblum, R.; Okuliarova, M.; Zeman, M.; Barnea, A. url  doi
openurl 
  Title Artificial light at night affects brain plasticity and melatonin in birds Type Journal Article
  Year 2019 Publication Neuroscience Letters Abbreviated Journal Neurosci Lett  
  Volume in press Issue Pages 134639  
  Keywords Animals; Artificial Light At Night (ALAN); cell proliferation; circadian cycle; melatonin; neuronal densities; zebra finches (Taeniopygia guttata)  
  Abstract Artificial light at night (ALAN), which disrupts the daily cycle of light, has vast biological impacts on all organisms, and is also associated with several health problems. The few existing studies on neuronal plasticity and cognitive functions in mammals indicate that a disruption of the circadian cycle impairs learning and memory and suppresses neurogenesis. However, nothing is known about the effect of ALAN on neuronal plasticity in birds. To this end, zebra finches (Taeniopygia guttata) were exposed to ecologically relevant ALAN intensities (0.5, 1.5 and 5 lux), treated with BrdU to quantify cell proliferation in their ventricular zone (VZ), and compared to controls that were kept under dark nights. We found, in our diurnal birds, that ALAN significantly increased cell proliferation in the VZ. However, neuronal densities in two brain regions decreased under ALAN, suggesting neuronal death. In addition, ALAN suppressed nocturnal melatonin production in a dose-dependent manner, and might also increase body mass. Taken together, our findings add to the notion of the deleterious effect of ALAN.  
  Address Department of Natural and Life Sciences, The Open University of Israel, Ra'anana, 43107, Israel  
  Corporate Author Thesis  
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  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0304-3940 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:31760086 Approved no  
  Call Number GFZ @ kyba @ Serial (down) 2760  
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