|   | 
Details
   web
Records
Author Gomes, D.G.E.
Title Orb-weaving spiders are fewer but larger and catch more prey in lit bridge panels from a natural artificial light experiment Type Journal Article
Year 2020 Publication PeerJ Abbreviated Journal (up)
Volume 8 Issue Pages e8808
Keywords Animals
Abstract Artificial light at night is rapidly changing the sensory world. While evidence is accumulating for how insects are affected, it is not clear how this impacts higher trophic levels that feed on insect communities. Spiders are important insect predators that have recently been shown to have increased abundance in urban areas, but have shown mixed responses to artificial light. On a single bridge with alternating artificially lit and unlit sections, I measured changes in the orb-weaving spider Larinioides sclopetarius (Araneidae) web abundance, web-building behavior, prey-capture, and body condition. In artificially lit conditions, spiders caught more prey with smaller webs, and had higher body conditions. However, there were fewer spiders with active webs in those lit areas. This suggests that either spiders were not taking advantage of an ecological insect trap, perhaps due to an increased risk of becoming prey themselves, or were satiated, and thus not as active within these habitats. The results from this natural experiment may have important consequences for both insects and spiders in urban areas under artificial lighting conditions.
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 2167-8359 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 2867
Permanent link to this record
 

 
Author Papalambrou, A.; Bali, N.
Title Dark Sky Sim: An Open-Design Dark Sky Simulator Type Journal Article
Year 2020 Publication Communicating Astronomy with the Public Abbreviated Journal (up)
Volume 27 Issue Pages 24-26
Keywords Education; Skyglow
Abstract This article describes the key steps on how to construct the Dark Sky Simulator, the outcome of the Dark Sky Sim project. The Dark Sky Simulator is a “physical simulator” to demonstrate the effects of light pollution on the starry sky and the concept of proper lighting. The simulator consists of an LED sky model simulating the starry sky and LED model streetlighting. The simulator creates for users a first-hand experience of light pollution caused by various light fixtures. The simulator was successfully completed, and information on how to construct a simulator with simple tools and inexpensive components are made available online for free. Building the simulator is a very exciting STEM project involving hands-on construction and programming skills in addition to learning astronomy concepts, making it a useful resource for both educational and outreach communities. The project was funded by the International Astronomical Union Office of Astronomy for Development (IAU OAD).
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 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 2875
Permanent link to this record
 

 
Author Zhao, X.; Zhang M.; Che, X.; Zou, F.
Title Blue light attracts nocturnally migrating birds Type Journal Article
Year 2020 Publication The Condor Abbreviated Journal (up)
Volume in press Issue Pages in press
Keywords Animals
Abstract Light pollution is increasing and artificial light sources have great impacts on animals. For migrating birds, collisions caused by artificial light pollution are a significant source of mortality. Laboratory studies have demonstrated that birds have different visual sensitivities to different colors of light, but few field experiments have compared birds’ responses to light of different wavelengths. We used 3 monochromatic lights (red, green, and blue) and polychromatic yellow light to study the impact of wavelength on phototaxis at 2 gathering sites of nocturnally migrating birds in Southwest China. For both sites, short-wavelength blue light caused the strongest phototactic response. In contrast, birds were rarely attracted to long-wavelength red light. The attractive effect of blue light was greatest during nights with fog and headwinds. As rapid urbanization and industrialization cause an increase in artificial light, we suggest that switching to longer wavelength lights is a convenient and economically effective way to reduce bird collisions.

摘要

目前地球上光污染日益严重,五颜六色的人工光源对生态系统造成了很大影响。就鸟类而言,在世界各地已发生了很多鸟类撞击人工光源的事件。实验室研究表明,鸟类对不同颜色的光有不同的视觉敏感度,但很少有野外实验比较鸟类对不同波长光的反应。我们在中国西南地区的两个夜间候鸟迁徙聚集点使用三种单色光(红、绿、蓝)和一种复合光(黄),研究了光波长对的候鸟趋光性的影响。研究表明,短波长的蓝光引起了候鸟最强烈的趋光性反应。相反,鸟类很少被长波长的红光所吸引。特别是在有雾和逆风的夜晚,蓝光的吸引力最大。由于快速的城市化和工业化导致人造光的增加,我们认为使用长波光是一个减少鸟类碰撞光源的方便和经济有效的方式。
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 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 2896
Permanent link to this record
 

 
Author Rahman, A.; Asyhari, A.T.; Obaidat, M.S.; Kurniawan, I.F.; Mukta, M.Y.; Vijayakumar, P.
Title IoT-Enabled Light Intensity-Controlled Seamless Highway Lighting System Type Journal Article
Year 2020 Publication IEEE Systems Journal Abbreviated Journal (up)
Volume in press Issue Pages in press
Keywords Lighting; Economics
Abstract Motivated by enormous highway-lighting energy consumption, smart lighting development is crucial to better manage available resources. While existing literature focused on ensuring cost-effective lighting, an equally important requirement, namely the visual comfort of motorists, is almost disregarded. This article proposes a novel Internet of Things-enabled system that can be intelligently controlled according to the traffic demand. Cooperative relay-network architecture is the central element that leverages upon placement of cyber-enabled lampposts to allow for sensing-exchanging highway traffic information. Data accumulation is exploited to automate adaptive switching on/off the lighting and provide backtracking detection of faulty lampposts. From the service provider’s perspective, we envision to deploy low-cost highly durable sensing and network components to significantly cut down the operating cost. From the road user’s perspective, the relay-network is envisaged to provide seamless driving experience where sufficient lighting is always perceived along the road. A critical analysis quantitatively evaluates the seamless driving experience considering car arrival rate, outage probability, and device malfunction probability. A road occupancy-based cost estimation analysis demonstrates the effective cost reduction of the proposal compared to existing systems. Furthermore, the performance of chosen communication modules under different setups is assessed through simulation, suggesting appropriate protocol for different highway traffic conditions.
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 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 2897
Permanent link to this record
 

 
Author Gerhardsson, K.M.; Laike, T.; Johansson, M.
Title Leaving lights on – A conscious choice or wasted light? Use of indoor lighting in Swedish homes Type Journal Article
Year 2020 Publication Indoor and Built Environment Abbreviated Journal (up)
Volume in press Issue Pages in press
Keywords Psychology; Lighting
Abstract Promoting resource- and energy-efficient home lighting through technology and behaviour change requires an understanding of how residents currently use lighting and what they want from it. However, users' needs and desires relating to lighting in homes are poorly understood, as research is still limited. This paper aims to provide a fuller picture of residents' experiences with their home lighting. Interviews about how residents perceive the character of lighting and luminaires and lighting use suggest that home lighting has nine capabilities: to enable vision; to facilitate visual tasks; to display objects; to send a message; to support a particular atmosphere; to shape the architectural space; to offer a visual aesthetic experience; to maintain or change rhythmicity; and to evoke memories. Secondary data confirmed five of them. The identified capabilities relate to behavioural goals, psychological wellbeing and social needs. We conclude that seemingly wasted light in people's homes, i.e. lights left on in unoccupied rooms, can serve a purpose for the residents, such as avoiding visual or aesthetic discomfort, making the home inviting, benefitting people outside and providing safety. Findings have implications for the further development of new lighting technologies and design, energy-saving campaigns targeting residents and for urban outdoor environments.
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 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 2898
Permanent link to this record