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Author Gabriel, K.M.A.; Kuechly, H.U.; Falchi, F.; Wosniok, W.; Hölker, F. url  doi
openurl 
  Title Resources of dark skies in German climatic health resorts Type Journal Article
  Year 2017 Publication International Journal of Biometeorology Abbreviated Journal Int J Biometeorol  
  Volume 61 Issue 2 Pages 11-22  
  Keywords Circadian rhythm; Germany; Health resorts; Light pollution; Regulation; Remote sensing  
  Abstract Illumination of nocturnal environments is increasing steadily worldwide. While there are some benefits for mankind, light at night affects animals, plants, and human health by blurring the natural distinction between day and night. International regulations exist to protect the environment for the maintenance of human health but nocturnal darkness is not considered. In Germany, cities and communities labeled as Climatic Health Resorts provide for high standards in air quality. However, their degree of nocturnal darkness is unexplored so far. In our study, we examined the degree of nocturnal darkness in German Climatic Health Resorts by two datasets based on georeferenced remote sensing data. The majority of Climatic Health Resorts (93.1 %) are able to offer a relative respite (>/= 20 mag/arcsec2) from a degraded nocturnal environment, while only 3.4 % are able to offer a dark, if by no means pristine, night environment (>/= 21 mag/arcsec2). Climatic Health Resorts emit less light as well as are less affected by night sky brightness compared to the average of non-classified communities. In combination with daytime requirements, the resorts provide conditions for a more distinct day-and-night-cycle than non-classified communities.  
  Address Leibniz-Institute for Freshwater Ecology and Inland Fisheries, Berlin, Germany  
  Corporate Author Thesis  
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  Language English Summary Language Original Title  
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  Series Volume Series Issue Edition  
  ISSN 0020-7128 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:27192999 Approved no  
  Call Number LoNNe @ kyba @ Serial 1456  
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Author Thompson, E.K.; Cullinan, N.L.; Jones, T.M.; Hopkins, G.R. url  doi
openurl 
  Title Effects of artificial light at night and male calling on movement patterns and mate location in field crickets Type Journal Article
  Year 2019 Publication Animal Behaviour Abbreviated Journal Animal Behaviour  
  Volume 158 Issue Pages 183-191  
  Keywords Animals  
  Abstract Anthropogenic factors, such as artificial light at night (ALAN), are increasingly linked to significant modifications in animal behaviours, such as foraging or migration. However, few studies have investigated directly whether the presence of ALAN affects the ability to find a mate (mate location). One direct effect of the presence of ALAN is that it can create a light barrier in an otherwise dark environment. This may have significant behavioural implications for nocturnally active species if it affects their ability to respond to potential mates. Our study, using the acoustically orienting Australian black field cricket, Teleogryllus commodus, determined experimentally whether the presence of a fragmented light environment influenced movement patterns of virgin females and males. Moreover, given the importance of male song for reproductive outcomes in this species, we assessed simultaneously whether such behaviours were modified by the presence of a male attraction call. We found that while initiation of movement was slower in the presence of ALAN, the behavioural shifts associated with its presence were relatively small compared to the influence of a broadcast male attraction call. The response to the male attraction call was typically stronger for females than for males, but both males and females modified aspects of behaviour when it was present regardless of whether their immediate environment was fragmented by artificial light at night or not. Artificial light at night may alter subtle aspects of movement and mating behaviour in this species, but ultimately does not provide a barrier to movement or mate location.  
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  ISSN 0003-3472 ISBN Medium  
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  Notes Approved no  
  Call Number GFZ @ kyba @ Serial 2752  
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Author Apostol, K.; Dumroese, R.K.; Pinto, J.R.; Davis, A.S. url  doi
openurl 
  Title Response of conifer species from three latitudinal populations to light spectra generated by light-emitting diodes and high-pressure sodium lamps Type Journal Article
  Year 2015 Publication Canadian Journal of Forest Research Abbreviated Journal Can. J. For. Res.  
  Volume 45 Issue 12 Pages 1711-1719  
  Keywords plants  
  Abstract Light-emitting diode (LED) technology shows promise for supplementing photosynthetically active radiation (PAR) in forest nurseries because of the potential reduction in energy consumption and an ability to supply discrete wavelengths to optimize seedling growth. Our objective was to examine the effects of light spectra supplied by LED and traditional high-pressure sodium (HPS) lamps on growth and physiology of Pseudotsuga menziesii (Douglas-fir) and Picea engelmannii (Engelmann spruce) seedlings. We used three latitudinal sources for each species: British Columbia (BC), Idaho (ID), and New Mexico (NM). Container seedlings were grown for 17 weeks in the greenhouse under an 18-h photoperiod of ambient solar light supplemented with light delivered from HPS or LED. In general, seedlings grown under LED had significantly greater growth, gas exchange rates, and chlorophyll contents than those seedlings grown under HPS. The growth and physiological responses to supplemental lighting varied greatly among species and seed sources. Generally, LED-grown seedlings from BC had the greatest growth and tissue dry matter followed by ID and NM populations. Compared with HPS, the significant increase in seedling growth and concomitant energy savings with LED (29% energy consumption relative to HPS) demonstrates the promise of using LED as PAR supplemental lighting for container seedling production.  
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  ISSN 0045-5067 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ kyba @ Serial 1250  
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Author Hall, A.L.; Davies, H.W.; Koehoorn, M. url  doi
openurl 
  Title Personal light-at-night exposures and components of variability in two common shift work industries: uses and implications for future research Type Journal Article
  Year 2018 Publication Scandinavian Journal of Work, Environment & Health Abbreviated Journal Scand J Work Environ Health  
  Volume 44 Issue 1 Pages 80-87  
  Keywords Human Health  
  Abstract Objectives Shift workers' increased risk of various adverse health outcomes has been linked to light-at-night (LAN) exposure, but few studies have measured LAN exposure in workplaces. To inform future research methods, this study aimed to (i) measure shift workers' exposures to LAN across industries, occupations, and work environments and (ii) assess components of variance across different exposure groupings and metrics. Methods Between October 2015 and March 2016, 152 personal full-shift measurements were collected from 102 night shift workers in emergency health services (paramedics, dispatchers) and healthcare industries (nurses, care aides, security guards, unit clerks, and laboratory, pharmacy, and respiratory therapy staff) in the province of British Columbia, Canada. Descriptive and variance component analyses were conducted for the 23:00-05:00 period to characterize exposures using multiple metrics of potential biological relevance (median lux, 90 thpercentile lux, sum of minutes >/=30 lux, and sum of minutes >/=100 lux). Results Average exposure levels were highest in the healthcare industry. By occupation, laboratory workers and care aides displayed the highest and emergency dispatch officers displayed the lowest levels for all LAN exposure metrics. Between-group variance was large relative to within-group variance for all exposure groupings and metrics, and increased as grouping specificity increased (moving from industry to occupation). Conclusions Results from this study suggest that high-level grouping schemes may provide a simple yet effective way of characterizing individual LAN exposures in epidemiological studies of shift work. Ongoing measurement of LAN exposures and assessment of exposure variability is needed in future studies of shift workers as a means to increase sampling efficiency, reduce measurement error, and maximize researchers' ability to detect relationships where they exist.  
  Address School of Population and Public Health, University of British Columbia, 2206 East Mall, Vancouver, V6T1Z3, Canada. amyhall@mail.ubc.ca  
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  Language English Summary Language Original Title  
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  ISSN 0355-3140 ISBN Medium  
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  Notes PMID:28951937 Approved no  
  Call Number LoNNe @ kyba @ Serial 1754  
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Author Brüning A., Hölker, F., Franke, S., Preuer, T., Kloas, W. url  doi
openurl 
  Title Impact of different colours of artificial light at night on melatonin rhythm and gene expression of gonadotropins in European perch Type Journal Article
  Year 2016 Publication Science of The Total Environment Abbreviated Journal  
  Volume 543 Issue Pages 214-222  
  Keywords Animals  
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  Notes Approved no  
  Call Number LoNNe @ schroer @ Serial 1294  
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