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Author Fiorini M.; Sanfilippo M.
Title Roads and jobs in Ethiopia Type Journal Article
Year 2019 Publication UNU-WIDER Abbreviated Journal
Volume (down) 2019 Issue 116 Pages
Keywords Remote Sensing
Abstract We look at how improving roads can affect jobs and structural transformation. We use a novel geocoded dataset covering the universe of Ethiopian roads and match this information with individual data to identify the effects of improvements in road infrastructure on the creation, quality, and sectoral distribution of jobs over the period 1994–2013. We find that, at the district level, higher market potential due to better roads contributes to the creation of new jobs, reduces the share of agricultural workers, and increases that of workers in the services sector but not in manufacturing. The latter experiences a relative increase in the share of informal workers. Finally, investigating the underlying mechanisms, we show that patterns of internal migration and changes in economic opportunities can help to rationalize our findings.
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Call Number UP @ altintas1 @ Serial 3213
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Author Desaulniers, J.; Desjardins, S.; Lapierre, S.; Desgagné, A.
Title Sleep Environment and Insomnia in Elderly Persons Living at Home Type Journal Article
Year 2018 Publication Journal of Aging Research Abbreviated Journal Journal of Aging Research
Volume (down) 2018 Issue Pages 1-7
Keywords Human Health
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ISSN 2090-2204 ISBN Medium
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Notes Approved no
Call Number GFZ @ kyba @ Serial 2016
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Author Da Silva, A.; Valcu, M.; Kempenaers, B.
Title Light pollution alters the phenology of dawn and dusk singing in common European songbirds Type Journal Article
Year 2015 Publication Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences Abbreviated Journal Philos Trans R Soc Lond B Biol Sci
Volume (down) 2015 Issue Pages 20140126
Keywords Animals; birds; artificial light at night; seasonality; song production; dawn chorus; dusk chorus; weather; European robin; Erithacus rubecula; common blackbird; song thrush; Turdus philomelos; great tit; Parus major; blue tit; common chaffinch; Fringilla coelebs
Abstract Artificial night lighting is expanding globally, but its ecological consequences remain little understood. Animals often use changes in day length as a cue to time seasonal behaviour. Artificial night lighting may influence the perception of day length, and may thus affect both circadian and circannual rhythms. Over a 3.5 month period, from winter to breeding, we recorded daily singing activity of six common songbird species in 12 woodland sites, half of which were affected by street lighting. We previously reported on analyses suggesting that artificial night lighting affects the daily timing of singing in five species. The main aim of this study was to investigate whether the presence of artificial night lighting is also associated with the seasonal occurrence of dawn and dusk singing. We found that in four species dawn and dusk singing developed earlier in the year at sites exposed to light pollution. We also examined the effects of weather conditions and found that rain and low temperatures negatively affected the occurrence of dawn and dusk singing. Our results support the hypothesis that artificial night lighting alters natural seasonal rhythms, independently of other effects of urbanization. The fitness consequences of the observed changes in seasonal timing of behaviour remain unknown.
Address Department of Behavioural Ecology and Evolutionary Genetics, Max Planck Institute for Ornithology, Eberhard-Gwinner-Strasse, 82319 Seewiesen, Germany; b.kempenaers@orn.mpg.de
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Publisher Royal Society Place of Publication Editor
Language English Summary Language English Original Title
Series Editor Series Title The biological impacts of artificial light at night: from molecules to communities Abbreviated Series Title
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Notes Approved no
Call Number IDA @ john @ Serial 1124
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Author Bennie, J.; Davies, T.W.; Cruse, D.; Inger, R.; Gaston, K.J.
Title Cascading effects of artificial light at night: resource-mediated control of herbivores in a grassland ecosystem Type Journal Article
Year 2015 Publication Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences Abbreviated Journal Philos Trans R Soc Lond B Biol Sci
Volume (down) 2015 Issue Pages 20140131
Keywords Ecology; light pollution; photopollution; artificial light at night; biotic interactions; community-level; bottom-up effects; grasslands; herbivores; invertebrates; pea aphid; Acyrthosiphon pisum; plants; insects
Abstract Artificial light at night has a wide range of biological effects on both plants and animals. Here, we review mechanisms by which artificial light at night may restructure ecological communities by modifying the interactions between species. Such mechanisms may be top-down (predator, parasite or grazer controlled), bottom-up (resource-controlled) or involve non-trophic processes, such as pollination, seed dispersal or competition. We present results from an experiment investigating both top-down and bottom-up effects of artificial light at night on the population density of pea aphids Acyrthosiphon pisum in a diverse artificial grassland community in the presence and absence of predators and under low-level light of different spectral composition. We found no evidence for top-down control of A. pisum in this system, but did find evidence for bottom-up effects mediated through the impact of light on flower head density in a leguminous food plant. These results suggest that physiological effects of light on a plant species within a diverse plant community can have detectable demographic effects on a specialist herbivore.
Address Environment and Sustainability Institute, University of Exeter, Penryn TR10 9FE, UK; k.j.gaston@exeter.ac.uk
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Publisher Royal Society Place of Publication Editor
Language English Summary Language English Original Title
Series Editor Series Title The biological impacts of artificial light at night: from molecules to communities Abbreviated Series Title
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Notes Approved no
Call Number IDA @ john @ Serial 1128
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Author Nowinszky, L.; Puskás, J.
Title Light-Trap Catch of the Harmful Moths Depending of Moonlight in North Carolina and Nebraska States of USA Type Journal Article
Year 2012 Publication ISRN Zoology Abbreviated Journal ISRN Zoology
Volume (down) 2012 Issue Pages 1-6
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ISSN 2090-5238 ISBN Medium
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Notes Approved no
Call Number IDA @ john @ Serial 111
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