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http://dspace.udla.edu.ec/handle/33000/11321| Tipo de material : | bachelorThesis |
| Título : | Influencia del ozono troposférico en especies nativas del Ecuador, parroquia de Conocoto |
| Autor : | Endara Guffanti, Carlos Xavier |
| Tutor : | Zalakeviciute, Rasa |
| Palabras clave : | CONTAMINACIÓN ATMOSFÉRICA;GASES DE EFECTO INVERNADERO;CONTAMINANTES AMBIENTALES;OZONO TROPOSFÉRICO;PARROQUIA CONOCOTO-QUITO |
| Fecha de publicación : | 2019 |
| Editorial : | Quito: Universidad de las Américas, 2019 |
| Citación : | Endara Guffanti, C. X. (2019). Influencia del ozono troposférico en especies nativas del Ecuador, parroquia de Conocoto (Tesis de pregrado). Universidad de las Américas, Quito. |
| Resumen : | El ozono troposférico es un contaminante secundario, originado por una serie de reacciones fotoquímicas entre contaminantes primarios como: compuestos orgánicos volátiles COVs y los óxidos de nitrógeno NOX... |
| Descripción : | Tropospheric ozone is a secondary pollutant, caused by a series of photochemical reactions between primary pollutants such as volatile organic compounds (VOCs) and nitrogen oxides (NOX). In fact, several studies warn that the increase in this global air pollutant could exceed 7 parts per billion within the next 10 years. In the Metropolitan District of Quito (DMQ), the parish of Conooto is located, which stands out for presenting levels of pollution that exceed the national air quality standard. During 2017, the maximum recorded octo-hour concentrations of tropospheric O3 were recorded in two areas of the city, one of them Los Chillos, located in the aforementioned parish. In both atmospheric monitoring stations, ozone concentrations exceeded 100 μg / m³ which are the national and international regulatory limit. O3 is a pollutant that generates significant impacts on human and ecosystem health, which is how exposure to this gas affects plant growth. For this reason, the present titling work determined the morphological and chemical changes in 5 native shrub species of Ecuador: Chilca (Baccharis latifolia), Iso (Dalea coerulea), Guarango (Mimosa quitensis), Mora de Quito (Rubus glaucus) and Nettle (Urtica magellanica Juss. Ex Poir) exposed to 0 μg / m3 and 100 μg / m3, in order to evaluate the behavior of these species with possible revegetation potential based on real-time O3 monitoring. The results show that, in environmental conditions with high concentrations of ozone, there is the appearance of spots, necrosis and foliar loss, affecting the number of leaves, contained in ascorbic acid and chlorophyll, during plant growth. Proving that the most tolerant plant species is Mora de Quito (Rubus glaucus), presenting minor effects, followed by Chilca (Baccharis latifolia). According to what was found, it is recommended to conduct studies with longer experimental periods to determine the effect of ozone on growth based on the height of the plant, and deepen acute symptoms for future research. |
| URI : | http://dspace.udla.edu.ec/handle/33000/11321 |
| Aparece en las colecciones: | Ingeniería Ambiental en Prevención y Remediación |
Ficheros en este ítem:
| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| UDLA-EC-TIAM-2019-22.pdf | 5,14 MB | Adobe PDF | Visualizar/Abrir |
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