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  1. Article ; Online: Potential Solutions for the Water Shortage Using Towers of Fog Collectors in a High Andean Community in Central Ecuador

    David Vinicio Carrera-Villacrés / Fabián Rodríguez-Espinosa / Theofilos Toulkeridis

    Sustainability, Vol 15, Iss 9237, p

    2023  Volume 9237

    Abstract: The lack of water is a fundamental issue for survival of peasant communities located at heights above 3200 masl in the Andean highlands, such as in the case of the Galte-Yaguachi community in central Ecuador. The social balance, agricultural development ... ...

    Abstract The lack of water is a fundamental issue for survival of peasant communities located at heights above 3200 masl in the Andean highlands, such as in the case of the Galte-Yaguachi community in central Ecuador. The social balance, agricultural development as well as animal subsistence and finally the economic income is pending on the availability of hydric resources. Therefore, a three-dimensional fog collector system was constructed with Urku Yaku material in order to provide water for the close-by community. Simultaneously, we determined the quality of the collected water per square meter of the mesh, during the period of the highest annual precipitations. The installed nets yielded a gain of at least 2.63 L/m 2 and a minimum of 0.65 L/m 2 per day. The analyzed water quality reflected the suitability for human consumption. As water collection has been successful, an expansion of the proposed system may provide this fundamental good also to other communities with similar characteristics. Fog catcher towers will produce 26,577.84 m 3 /year of water, fulfilling crops’ needs, and the economic analysis proves it is worth the investment, as demonstrated by a benefit cost ratio of 1.90.
    Keywords water supply ; fog collector ; Urku Yaku ; Andes ; Ecuador ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
    Subject code 333
    Language English
    Publishing date 2023-06-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Contrasting Effects of Air Pollution Assessment in two Areas of the Quito Metropolitan District, Ecuador

    Daniel Cornejo-Vásconez / Fabián Rodríguez-Espinosa / Alejandra Guasumba / Theofilos Toulkeridis

    La Granja: Revista de Ciencias de la Vida, Vol 36, Iss

    2022  Volume 2

    Abstract: One of the main factors of air contamination within urban areas is burning gasoline by cars, light trucks and motorcycles. Gasoline burning liberates pollution gases such as Nitrogen dioxide, Sulfur dioxide, Carbon monoxide, benzene, besides others. ... ...

    Abstract One of the main factors of air contamination within urban areas is burning gasoline by cars, light trucks and motorcycles. Gasoline burning liberates pollution gases such as Nitrogen dioxide, Sulfur dioxide, Carbon monoxide, benzene, besides others. Among these, Nitrogen dioxide (NOx) is the one that stands out for the people’s awareness of such contamination. We used the Hedonic Price Method (HPM) in order to determine people’s perception of air quality as a proxy and estimate the effect of gases on the housing market. We selected two areas of Quito Metropolitan District in order to evaluate contamination effects on properties. One with a higher concentration of gases located within the historic district of Quito. The other with better air quality called the Bellavista district. The results of three different models indicated that a reduction of 1 (µg/m3) of NOx would increase an average of 4.54% of the housing market value, which it represents 2,032,326.24 USD in value for sample properties. A decrease of 5 µg/m3 will increase in 22.7% of properties value.
    Keywords Greenhouse gases ; hedonic price ; housing value ; air contamination ; Quito ; Agriculture ; S ; Agriculture (General) ; S1-972 ; Science (General) ; Q1-390
    Subject code 333
    Language English
    Publishing date 2022-06-01T00:00:00Z
    Publisher Universidad Politécnica Salesiana
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Valuing the Impact of Air Pollution in Urban Residence Using Hedonic Pricing and Geospatial Analysis, Evidence From Quito, Ecuador

    Sebastian Borja-Urbano / Fabián Rodríguez-Espinosa / Marco Luna-Ludeña / Theofilos Toulkeridis

    Air, Soil and Water Research, Vol

    2021  Volume 14

    Abstract: Air pollution is one of the hazardous effects of urbanization. Hereby, one the most polluted cities in Ecuador is the Metropolitan District of Quito (DMQ). This study attempts to determine the marginal willingness to pay for a cleaner air in the DMQ ... ...

    Abstract Air pollution is one of the hazardous effects of urbanization. Hereby, one the most polluted cities in Ecuador is the Metropolitan District of Quito (DMQ). This study attempts to determine the marginal willingness to pay for a cleaner air in the DMQ using the impact of air pollutants on price properties. Spatial interpolation techniques visualized pollutant concentrations in the DMQ. Additionally, a hedonic price model estimated air pollution impact on properties. Results demonstrated hazard levels for at least three pollutants, being Particulate Matter PM 2.5 , Nitrogen Dioxide NO 2 , and Sulfur Dioxide SO 2 . Subsequently, the economic impact on the house market was statistically significant with a decrease in property value between 1.1% and 2.8%. These drop of value between 1,846.20 up to 4,984.74 US$ (United States Dollars) represents a substantial loss in property value for the DMQ and loss of revenues for the city.
    Keywords Environmental sciences ; GE1-350
    Subject code 333
    Language English
    Publishing date 2021-11-01T00:00:00Z
    Publisher SAGE Publishing
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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