Urban street lighting differentially affects community attributes of airborne and ground‐dwelling invertebrate assemblages

Author(s):  
Martin T. Lockett ◽  
Therésa M. Jones ◽  
Mark A. Elgar ◽  
Kevin J. Gaston ◽  
Marcel E. Visser ◽  
...  
1991 ◽  
Vol 112 ◽  
pp. 11-17 ◽  
Author(s):  
Woodruff T. Sullivan

ABSTRACTAn image of the entire earth at nighttime is assembled for the first time. It consists of a mosaic of photographs, all taken at local midnight in the 400-1100 nm band, made by the Defense Meteorological Satellite Program over the period 1974-84. Photographs were selected for freedom from clouds, lack of moonlight, high sensitivity, and suitability to illustrate various temporal phenomena. The image primarily reveals activities of humankind such as urban street lighting, rangeland burning, slash-and-burn agriculture, natural gas burnoffs in oilfields, and squidding. Although light pollution in urban areas creates a striking map, at the same time it devastates astronomical observation and removes much of humankind from any familiarity with the night sky.


2016 ◽  
Vol 35 (2) ◽  
pp. 404
Author(s):  
JO Asalor ◽  
IW Ujevwerume
Keyword(s):  

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 378
Author(s):  
Boris A. Portnov ◽  
Rami Saad ◽  
Tamar Trop

If excessive and misdirected, street lighting (SL) causes energy waste and might pose significant risks to humans and natural ecosystems. Based on data collected by an interactive user-oriented method, we developed a novel empirical approach that enables the spatial identification of over-illuminated areas in residential neighborhoods and calculation of potential energy savings that can be achieved there, by reducing excessive illumination. We applied the estimated model to a densely populated residential neighborhood in the City of Tel Aviv-Yafo in Israel, to test the proposed approach’s performance. According to our estimates, illumination levels can be lowered by up to 50% in approximately 60% of the neighborhood’s area, which is currently over-illuminated, thus leading to significant energy savings, while preserving a reasonable level of visual comfort associated with SL.


2021 ◽  
Vol 13 (21) ◽  
pp. 11746
Author(s):  
Rami David Orejon-Sanchez ◽  
Jose Ramon Andres-Diaz ◽  
Alfonso Gago-Calderon

This paper analyzes the technical and economic viability and sustainability of urban street lighting installation projects using equipment powered by photovoltaic (PV) energy. First, a description of the state-of-the-art of the technology is performed, studying the components involved in solar LED luminaires for street lighting application and examples of autonomous PV systems installed in different countries. Later, a case study a based on a renovation project of the street lighting installation at a 5000-inhabitant municipality in Lanzarote (Spain) is presented. Two alternatives are analyzed: underground channeling of the previous aerial electrical grid and the installation of LED luminaires, and, on the other hand, the installation of autonomous LED solar luminaires. Simulations concluded that a PV lighting installation proposal guarantees the existing M3 lighting requirements (EN 13201-2:2015) and represents a saving in the material execution budget of 43.78% with respect to the channeled power grid option. Finally, a statistical study has been carried out to assess the social acceptance of Spanish citizens of this autonomous PV technology in urban environments. This considers strengths and weakness of the technology: sustainability, robustness, visual impact, or risk of vandalism. In general, most subjects of all age segments are aware of the problem that means having aerial wiring running at facades (95%) and considers the use of PV in urban lighting sustainable (88%). However, 47% of those surveyed consider that shutdowns due to lack of energy harvesting is problematic and 17% consider this very problematic. This major drawback (visual impact of PV equipment is mostly evaluated as neutral) gives rise to social reluctance, especially in people younger than 50 who remarked this as more problematic than senior segments. Thus, guaranteed operational service is fundamental to have social agreement for PV technology implementation.


2016 ◽  
Vol 16 (12) ◽  
pp. 4981-4994 ◽  
Author(s):  
Sumeet Kumar ◽  
Ajay Deshpande ◽  
Stephen S. Ho ◽  
Jason S. Ku ◽  
Sanjay E. Sarma

2021 ◽  
Vol 6 (2) ◽  
Author(s):  
Masoud Saljoqi ◽  
Hamid Reza Behnood ◽  
Babak Mirbaha
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document