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https://www.readbyqxmd.com/read/28333081/hyperspectral-monitoring-of-green-roof-vegetation-health-state-in-sub-mediterranean-climate-preliminary-results
#1
Patrizia Piro, Michele Porti, Simone Veltri, Emanuela Lupo, Monica Moroni
In urban and industrial environments, the constant increase of impermeable surfaces has produced drastic changes in the natural hydrological cycle. Decreasing green areas not only produce negative effects from a hydrological-hydraulic perspective, but also from an energy point of view, modifying the urban microclimate and generating, as shown in the literature, heat islands in our cities. In this context, green infrastructures may represent an environmental compensation action that can be used to re-equilibrate the hydrological and energy balance and reduce the impact of pollutant load on receiving water bodies...
March 23, 2017: Sensors
https://www.readbyqxmd.com/read/28318693/the-influence-of-dual-substrate-layer-extensive-green-roofs-on-rainwater-runoff-quantity-and-quality
#2
Xiaoou Wang, Yimei Tian, Xinhua Zhao
This study investigates the ability of dual-substrate-layer extensive green roofs to retain rainwater and reduce pollutant leaching. The substrates in dual-substrate-layer green roofs consist of an upper organic nutrition layer for plant growth and a lower inorganic adsorption layer for water retention and pollutant reduction. One traditional single-substrate-layer extensive green roof was built for comparison with dual-substrate-layer green roofs. During the experimental period, dual-substrate-layer green roofs supported better natural vegetation growth, with coverage exceeding 90%, while the coverage in single-substrate-layer green roof was over 80%...
March 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28304134/a-modified-eco-efficiency-framework-and-methodology-for-advancing-the-state-of-practice-of-sustainability-analysis-as-applied-to-green-infrastructure
#3
Santosh R Ghimire, John M Johnston
We propose a modified eco-efficiency (EE) framework and novel sustainability analysis methodology for green infrastructure (GI) practices used in water resource management. GI practices such as rainwater harvesting (RWH), rain gardens, porous pavements, and green roofs are emerging as viable strategies for climate change adaptation. The modified framework includes four economic, 11 environmental, and three social indicators. Using six indicators from the framework, at least one from each dimension of sustainability, we demonstrate the methodology to analyze RWH designs...
March 17, 2017: Integrated Environmental Assessment and Management
https://www.readbyqxmd.com/read/28274257/prevalence-and-determinants-of-malaria-among-children-in-zamb%C3%A3-zia-province-mozambique
#4
James G Carlucci, Meridith Blevins Peratikos, Charlotte B Cherry, Melanie L Lopez, Ann F Green, Lazaro González-Calvo, Troy D Moon
BACKGROUND: Malaria is the leading cause of death among children in Mozambique. Prevalence and factors associated with malaria are not well studied among children in rural Zambézia Province. Whether prevalence of malaria varies across diverse districts within the province is unknown. METHODS: A cross-sectional survey of female heads of household was conducted during April and May 2014, a period of peak malaria transmission. Data were collected on up to two randomly selected children aged 6-59 months per household...
March 9, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28192368/erratum-water-science-and-technology-74-8-1845-1854-toward-an-operational-tool-to-simulate-green-roof-hydrological-impact-at-the-basin-scale-a-new-version-of-the-distributed-rainfall-runoff-model-multi-hydro-pierre-antoine-versini-et-al-doi-10-2166-wst-2016
#5
Pierre-Antoine Versini, Auguste Gires, Ioulia Tchiguirinskaia, Daniel Schertzer
No abstract text is available yet for this article.
February 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28171833/assessing-chilling-and-drought-tolerance-of-different-plant-genera-on-extensive-green-roofs-in-an-arid-climate-region-in-iran
#6
Navid Vahdati, Ali Tehranifar, Fatemeh Kazemi
The harsh and stressful growing environment of extensive green roofs especially in arid environments allows a limited range of plant species to survive. Therefore, achieving plantings to survive in such conditions is a significant challenge. This paper describes an experiment investigating plant selections for extensive green roofs based on chilling (cold season) and drought (warm season) conditions of Iran. Nine species were selected from the three major taxonomic and functional plant groups that are commonly used on extensive green roofs including grasses, groundcovers and sedums...
February 4, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28164299/habitat-connectivity-and-local-conditions-shape-taxonomic-and-functional-diversity-of-arthropods-on-green-roofs
#7
S Braaker, M K Obrist, J Ghazoul, M Moretti
1.Increasing development of urban environments creates high pressure on green spaces with potential negative impacts on biodiversity and ecosystem services. There is growing evidence that green roofs - rooftops covered with vegetation - can contribute mitigate the loss of urban green spaces by providing new habitats for numerous arthropod species. 2.Whether green roofs can contribute to enhance taxonomic and functional diversity and increase connectivity across urbanized areas remains, however, largely unknown...
February 6, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28162763/sedum-dominated-green-roofs-in-a-semi-arid-region-increase-co2-concentrations-during-the-dry-season
#8
Har'el Agra, Tamir Klein, Amiel Vasl, Hadar Shalom, Gyongyver Kadas, Leon Blaustein
Green roofs are expected to absorb and store carbon in plants and soils and thereby reduce the high CO2 concentration levels in big cities. Sedum species, which are succulent perennials, are commonly used in extensive green roofs due to their shallow root system and ability to withstand long water deficiencies. Here we examined CO2 fixation and emission rates for Mediterranean Sedum sediforme on green-roof experimental plots. During late winter to early spring, we monitored CO2 concentrations inside transparent tents placed over 1m(2) plots and followed gas exchange at the leaf level using a portable gas-exchange system...
April 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28052509/spatially-dependent-biotic-and-abiotic-factors-drive-survivorship-and-physical-structure-of-green-roof-vegetation
#9
Jason M Aloisio, Matthew I Palmer, Mario A Giampieri, Amy R Tuininga, James D Lewis
Plant survivorship depends on biotic and abiotic factors that vary at local and regional scales. This survivorship, in turn, has cascading effects on community composition and the physical structure of vegetation. Survivorship of native plant species is variable among populations planted in environmentally stressful habitats like urban roofs, but the degree to which factors at different spatial scales affect survivorship in urban systems is not well understood. We evaluated the effects of biotic and abiotic factors on survivorship, composition, and physical structure of two native perennial species assemblages, one characterized by a mixture of C4 grasses and forbs (Hempstead Plains, HP) and one characterized by a mixture of C3 grasses and forbs (Rocky Summit, RS), that were initially sown at equal ratios of growth forms (5:1:4; grass, N-fixing forb and non-N-fixing forb) in replicate 2-m(2) plots planted on 10 roofs in New York City (New York, USA)...
January 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28034543/using-soil-microbial-inoculations-to-enhance-substrate-performance-on-extensive-green-roofs
#10
Chloe J Molineux, Alan C Gange, Darryl J Newport
Green roofs are increasing in popularity in the urban environment for their contribution to green infrastructure; but their role for biodiversity is not often a design priority. Maximising biodiversity will impact positively on ecosystem services and is therefore fundamental for achieving the greatest benefits from green roofs. Extensive green roofs are lightweight systems generally constructed with a specialised growing medium that tends to be biologically limited and as such can be a harsh habitat for plants to thrive in...
February 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28012387/optimal-location-selection-for-the-installation-of-urban-green-roofs-considering-honeybee-habitats-along-with-socio-economic-and-environmental-effects
#11
Jae Ha Gwak, Bo Kyeong Lee, Won Kyung Lee, So Young Sohn
This study proposes a new framework for the selection of optimal locations for green roofs to achieve a sustainable urban ecosystem. The proposed framework selects building sites that can maximize the benefits of green roofs, based not only on the socio-economic and environmental benefits to urban residents, but also on the provision of urban foraging sites for honeybees. The framework comprises three steps. First, building candidates for green roofs are selected considering the building type. Second, the selected building candidates are ranked in terms of their expected socio-economic and environmental effects...
March 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/27936895/portulaca-grandiflora-as-green-roof-vegetation-plant-growth-and-phytoremediation-experiments
#12
K Vijayaraghavan, Jesu Arockiaraj, Seralathan Kamala-Kannan
Finding appropriate rooftop vegetation may improve the quality of runoff from green roofs. Portulaca grandiflora was examined as possible vegetation for green roofs. Green roof substrate was found to have low bulk density (360.7 kg/m(3)), high water holding capacity (49.4%), air-filled porosity (21.1%) and hydraulic conductivity (5270 mm/h). The optimal substrate also supported the growth of P. grandiflora with biomass multiplication of 450.3% and relative growth rate of 0.038. Phytoextraction potential of P...
December 12, 2016: International Journal of Phytoremediation
https://www.readbyqxmd.com/read/27810303/surface-energy-balance-of-an-extensive-green-roof-as-quantified-by-full-year-eddy-covariance-measurements
#13
Jannik Heusinger, Stephan Weber
Green roofs are discussed as a promising type of green infrastructure to lower heat stress in cities. In order to enhance evaporative cooling, green roofs should ideally have similar Bowen ratio (β=sensible heat flux/latent heat flux) characteristics such as rural sites, especially during summer periods with high air temperatures. We use the eddy-covariance (EC) method to quantify the energy balance of an 8600m(2) extensive, non-irrigated green roof at the Berlin Brandenburg Airport, Germany over a full annual cycle...
January 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/27789885/toward-an-operational-tool-to-simulate-green-roof-hydrological-impact-at-the-basin-scale-a-new-version-of-the-distributed-rainfall-runoff-model-multi-hydro
#14
Pierre-Antoine Versini, Auguste Gires, Ioulia Tchinguirinskaia, Daniel Schertzer
Currently widespread in new urban projects, green roofs have shown a positive impact on urban runoff at the building scale: decrease and slow-down of the peak discharge, and decrease of runoff volume. The present work aims to study their possible impact at the catchment scale, more compatible with stormwater management issues. For this purpose, a specific module dedicated to simulating the hydrological behaviour of a green roof has been developed in the distributed rainfall-runoff model (Multi-Hydro). It has been applied on a French urban catchment where most of the building roofs are flat and assumed to accept the implementation of a green roof...
October 2016: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/27755723/plant-species-richness-enhances-nitrogen-retention-in-green-roof-plots
#15
Catherine Johnson, Shelbye Schweinhart, Ishi Buffam
Vegetated (green) roofs have become common in many cities and are projected to continue to increase in coverage, but little is known about the ecological properties of these engineered ecosystems. In this study, we tested the biodiversity-ecosystem function hypothesis using commercially available green roof trays as replicated plots with varying levels of plant species richness (0, 1, 3, or 6 common green roof species per plot, using plants with different functional characteristics). We estimated accumulated plant biomass near the peak of the first full growing season (July 2013) and measured runoff volume after nearly every rain event from September 2012 to September 2013 (33 events) and runoff fluxes of inorganic nutrients ammonium, nitrate, and phosphate from a subset of 10 events...
October 2016: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/27565531/do-vegetated-rooftops-attract-more-mosquitoes-monitoring-disease-vector-abundance-on-urban-green-roofs
#16
Gwendolyn K L Wong, C Y Jim
Green roof, an increasingly common constituent of urban green infrastructure, can provide multiple ecosystem services and mitigate climate-change and urban-heat-island challenges. Its adoption has been beset by a longstanding preconception of attracting urban pests like mosquitoes. As more cities may become vulnerable to emerging and re-emerging mosquito-borne infectious diseases, the knowledge gap needs to be filled. This study gauges the habitat preference of vector mosquitoes for extensive green roofs vis-à-vis positive and negative control sites in an urban setting...
December 15, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27521294/water-quantity-and-quality-response-of-a-green-roof-to-storm-events-experimental-and-monitoring-observations
#17
Corey M G Carpenter, Dimitar Todorov, Charles T Driscoll, Mario Montesdeoca
Syracuse, New York is working under a court-ordered agreement to limit combined sewer overflows (CSO) to local surface waters. Green infrastructure technologies, including green roofs, are being implemented as part of a CSO abatement strategy and to develop co-benefits of diminished stormwater runoff, including decreased loading of contaminants to the wastewater system and surface waters. The objective of this study was to examine the quantity and quality of discharge associated with precipitation events over an annual cycle from a green roof in Syracuse, NY and to compare measurements from this monitoring program with results from a roof irrigation experiment...
November 2016: Environmental Pollution
https://www.readbyqxmd.com/read/27332849/the-use-of-reactive-material-for-limiting-p-leaching-from-green-roof-substrate
#18
Agnieszka Bus, Agnieszka Karczmarczyk, Anna Baryła
The aim of the study is to assess the influence of drainage layer made of reactive material Polonite(®) on the water retention and P-PO(4) concentration in runoff. A column experiment was performed for extensive substrate underlined by 2 cm of Polonite(®) layer (SP) and the same substrate without supporting layer as a reference (S). The leakage phosphorus concentration ranged from 0.001 to 0.082 mg P-PO(4)·L(-1), with average value 0.025 P-PO(4)·L(-1) of S experiment and 0.000-0.004 P-PO(4)·L(-1) and 0...
2016: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/27317136/influence-of-urban-resilience-measures-in-the-magnitude-and-behaviour-of-energy-fluxes-in-the-city-of-porto-portugal-under-a-climate-change-scenario
#19
S Rafael, H Martins, E Sá, D Carvalho, C Borrego, M Lopes
Different urban resilience measures, such as the increase of urban green areas and the application of white roofs, were evaluated with the WRF-SUEWS modelling system. The case study consists of five heat waves occurring in Porto (Portugal) urban area in a future climate scenario. Meteorological forcing and boundary data were downscaled for Porto urban area from the CMIP5 earth system model MPI-ESM, for the Representative Concentration Pathway RCP8.5 scenario. The influence of different resilience measures on the energy balance components was quantified and compared between each other...
October 1, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27293781/assessing-urban-strategies-for-reducing-the-impacts-of-extreme-weather-on-infrastructure-networks
#20
Maria Pregnolato, Alistair Ford, Craig Robson, Vassilis Glenis, Stuart Barr, Richard Dawson
Critical infrastructure networks, including transport, are crucial to the social and economic function of urban areas but are at increasing risk from natural hazards. Minimizing disruption to these networks should form part of a strategy to increase urban resilience. A framework for assessing the disruption from flood events to transport systems is presented that couples a high-resolution urban flood model with transport modelling and network analytics to assess the impacts of extreme rainfall events, and to quantify the resilience value of different adaptation options...
May 2016: Royal Society Open Science
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