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Author |
Ceola, S.; Montanari, A.; Parajka, J.; Viglione, A.; Blöschl, G.; Laio, F. |
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Title |
Human signatures derived from nighttime lights along the Eastern Alpine river network in Austria and Italy |
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Conference Article |
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Year |
2016 |
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Keywords |
Remote Sensing; Society; nightlights; human presence; river network; Strahler order; DMSP-OLS; OLS; DMSP-OLS; Austria; Italy; Eastern Alpine |
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Abstract |
Understanding how human settlements and economic activities are distributed with reference to the geographical location of streams and rivers is of fundamental relevance for several issues, such as flood risk management, drought management related to increased water demands by human population, fluvial ecosystem services, water pollution and water exploitation. Besides the spatial distribution, the evolution in time of the human presence constitutes an additional key question. This work aims at understanding and analysing the spatial and temporal evolution of human settlements and associated economic activity, derived from nighttime lights, in the Eastern Alpine region. Nightlights, available at a fine spatial resolution and for a 22-year period, constitute an
excellent data base, which allows one to explore in details human signatures. In this experiment, nightlights are associated to five distinct distance-from-river classes. Our results clearly point out an overall enhancement of human presence across the considered distance classes during the last 22 years, though presenting some differences among the study regions. In particular, the river network delineation, by considering different groups of river pixels based on the Strahler order, is found to play a central role in the identification of nightlight spatio-temporal trends. |
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Dipartimento di Ingegneria Civile, Chimica, Ambientale e dei Materiali, Università di Bologna, Bologna, Italy |
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International Association of Hydrological Sciences |
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English |
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English |
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7th International Water Resources Management Conference of ICWRS, 18–20 May 2016, Bochum, Germany |
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no |
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Call Number  |
IDA @ john @ |
Serial |
1432 |
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Author |
Contel, T.M.; Ferrandis, I.G.; Ferrandis, X.G. |
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Title |
Light pollution in natural science textbooks in Spanish secondary education |
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Journal Article |
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Year |
2016 |
Publication |
European Journal of Science and Mathematics Education |
Abbreviated Journal |
Eur. J. Sci. Math. Ed. |
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Volume |
4 |
Issue |
2 |
Pages |
129-139 |
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Keywords |
Education; Light pollution, Secondary education, Natural science textbooks, Spanish secondary education curriculum |
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Abstract |
Light pollution has emerged with the industrial development in recent decades. It is becoming a significant environmental issue for cities today and it will probably become more important in the near future. However, very little research has been carried out on this issue in the field of science teaching, despite there being a general agreement that education has an important contribution to make in the protection of the environment. This research analyses this problem in secondary education, through the official curriculum and textbooks published for the Valencian Region (Spain).  We have based the research on the “Content analysis†method. Light pollution, despite being included in the Spanish compulsory secondary education curriculum, is an issue that is barely touched on in the majority of the first and second year Natural Science textbooks analysed. |
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Department of Nursing, Research and Health Care Managemen, Ctatholic University of Valencia “San Vicente Martirâ€, Valencia, Spain; ignacio.garcia‐ferrandis(at)uv.es |
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English |
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English |
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2301-251X |
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IDA @ john @ |
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1433 |
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Author |
Tewolde, F.T.; Lu, N.; Shiina, K.; Maruo, T.; Takagaki, M.; Kozai, T.; Yamori, W. |
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Title |
Nighttime Supplemental LED Inter-lighting Improves Growth and Yield of Single-Truss Tomatoes by Enhancing Photosynthesis in Both Winter and Summer |
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Journal Article |
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Year |
2016 |
Publication |
Frontiers in Plant Science |
Abbreviated Journal |
Front Plant Sci |
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Volume |
7 |
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Pages |
448 |
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Keywords |
Plants; LED; fruit quality; lighting period; photosynthesis; plant factory; single-truss tomato; supplemental lighting; yield |
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Abstract |
Greenhouses with sophisticated environmental control systems, or so-called plant factories with solar light, enable growers to achieve high yields of produce with desirable qualities. In a greenhouse crop with high planting density, low photosynthetic photon flux density (PPFD) at the lower leaves tends to limit plant growth, especially in the winter when the solar altitude and PPFD at the canopy are low and day length is shorter than in summer. Therefore, providing supplemental lighting to the lower canopy can increase year-round productivity. However, supplemental lighting can be expensive. In some places, the cost of electricity is lower at night, but the effect of using supplemental light at night has not yet been examined. In this study, we examined the effects of supplemental LED inter-lighting (LED inter-lighting hereafter) during the daytime or nighttime on photosynthesis, growth, and yield of single-truss tomato plants both in winter and summer. We used LED inter-lighting modules with combined red and blue light to illuminate lower leaves right after the first anthesis. The PPFD of this light was 165 mumol m(-2) s(-1) measured at 10 cm from the LED module. LED inter-lighting was provided from 4:00 am to 4:00 pm for the daytime treatments and from 10:00 pm to 10:00 am for the nighttime treatments. Plants exposed only to solar light were used as controls. Daytime LED inter-lighting increased the photosynthetic capacity of middle and lower canopy leaves, which significantly increased yield by 27% in winter; however, photosynthetic capacity and yield were not significantly increased during summer. Nighttime LED inter-lighting increased photosynthetic capacity in both winter and summer, and yield increased by 24% in winter and 12% in summer. In addition, nighttime LED inter-lighting in winter significantly increased the total soluble solids and ascorbic acid content of the tomato fruits, by 20 and 25%, respectively. Use of nighttime LED inter-lighting was also more cost-effective than daytime inter-lighting. Thus, nighttime LED inter-lighting can effectively improve tomato plant growth and yield with lower energy cost compared with daytime both in summer and winter. |
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Center for Environment, Health and Field Sciences, Chiba University, Kashiwa, Japan; Department of Biological Sciences, Faculty of Science, The University of Tokyo, Japan |
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Frontiers Media S.A. |
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English |
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English |
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1664-462X |
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PMID:27092163; PMCID:PMC4823311 |
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Call Number |
IDA @ john @ |
Serial |
1434 |
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Author |
Bliss-Ketchum, L.L.; de Rivera, C.E.; Turner, B.C.; Weisbaum, D.M. |
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Title |
The effect of artificial light on wildlife use of a passage structure |
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Journal Article |
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Year |
2016 |
Publication |
Biological Conservation |
Abbreviated Journal |
Biological Conservation |
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Volume |
199 |
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25-28 |
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Keywords |
Animals; animal movement; Columbia black-tailed deer; deer; Odocoileus hemionus columbianus; deer mouse; Peromyscus maniculatus; opossum; Didelphis virginiana; artificial light at night |
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Barriers to animal movement can isolate populations, impacting their genetic diversity, susceptibility to disease, and access to resources. Barriers to movement may be caused by artificial light, which is known to disrupt bird, sea turtle, and bat behavior, but few studies have experimentally investigated the effects of artificial light on movement for a suite of terrestrial vertebrates. Therefore, we studied the effect of ecological light pollution on animal usage of a bridge under-road passage structure. On a weekly basis, sections of the structure were subjected to different light treatments including no light added, followed by a Reference period when lights were off in all the structure sections. Sand track data revealed use by 23 mammals, birds, reptiles and amphibians, nine of which had > 30 tracks for species-level analysis. Columbia black-tailed deer (Odocoileus hemionus columbianus) traversed under unlit bridge sections much less when neighboring sections were lit compared to when none were, suggesting avoidance due to any nearby presence of artificial light. Similarly, deer mouse (Peromyscus maniculatus) and opossum (Didelphis virginiana) track paths were less frequent in the lit sections than the ambient. Crossing was correlated with temporal or spatial factors but not light for three of the other species. These findings suggest that artificial light may be reducing habitat connectivity for some species though not providing a strong barrier for others. Such information is needed to inform mitigation of habitat fragmentation in the face of expanding urbanization. |
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Department of Environmental Science & Management, Portland State University, PO Box 751, Portland, OR 97207, USA; blissket(at)pdx.edu |
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Elsevier |
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English |
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English |
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0006-3207 |
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IDA @ john @ |
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1445 |
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Author |
Qian, J.; Scheer, F.A.J.L. |
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Title |
Circadian System and Glucose Metabolism: Implications for Physiology and Disease |
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Journal Article |
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Year |
2016 |
Publication |
Trends in Endocrinology and Metabolism: TEM |
Abbreviated Journal |
Trends Endocrinol Metab |
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27 |
Issue |
5 |
Pages |
282-293 |
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Keywords |
Human Health; circadian rhythms; food timing; glucose metabolism; melatonin; sleep; type 2 diabetes |
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Abstract |
The circadian system serves one of the most fundamental properties present in nearly all organisms: it generates 24-h rhythms in behavioral and physiological processes and enables anticipating and adapting to daily environmental changes. Recent studies indicate that the circadian system is important in regulating the daily rhythm in glucose metabolism. Disturbance of this circadian control or of its coordination relative to the environmental/behavioral cycle, such as in shift work, eating late, or due to genetic changes, results in disturbed glucose control and increased type 2 diabetes risk. Therefore, an in-depth understanding of the mechanisms underlying glucose regulation by the circadian system and its disturbance may help in the development of therapeutic interventions against the deleterious health consequences of circadian disruption. |
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Medical Chronobiology Program, Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Boston, MA 02115, USA; Division of Sleep Medicine, Harvard Medical School, Boston, MA 02115, USA; fscheer(at)bwh.harvard.edu |
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Publisher |
Cell |
Place of Publication |
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English |
Summary Language |
English |
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ISSN |
1043-2760 |
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PMID:27079518; PMCID:PMC4842150 |
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Call Number |
IDA @ john @ |
Serial |
1446 |
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