RESUMO
Freshwater lenses associated to shell ridges and sand sheets exist on the coastal wetland of Samborombón Bay. As they constitute one of the most vulnerable aquifer systems, it is the aim of this study to determine the hydrogeochemical processes that condition the chemical quality of its groundwater and to assess their present and future capability as sustenance of native woods and local villagers. To achieve this, hydrogeomorphological field surveys were made and groundwater samples were taken. Results show that lenses have a mean thickness of 12m and its chemical quality depends on the dissolution of CO2(g) and carbonates, weathering of silicates and ion exchange. Lenses can be affected by long-term climatic variability and mining. The study of morphology and geochemistry of the freshwater lenses bring lights into important information about the management of water resources and conservation of the environment.
Assuntos
Monitoramento Ambiental , Água Subterrânea , Áreas Alagadas , Argentina , Baías , Conservação dos Recursos Naturais , Água DoceRESUMO
La participación comunitaria es un aspecto relevante en la toma de decisiones para la implementación de acciones relacionadas con la protección del patrimonio natural. Objetivo: En el presente trabajo el principal objetivo es la construcción participativa de los lineamientos de uso y conservación de humedales en el sector El Ocho y Páramo de Letras. Método: La metodología comprende los siguientes pasos: 1) revisión de información secundaria; 2) una zonificación ambiental participativa de los sistemas productivos mediante la técnica de mapas parlantes, con la ayuda de la herramienta de AutoCAD; y 3) análisis del potencial turístico y florístico con base en los saberes tradicionales, y utilizando entrevistas con la comunidad, potenciales turistas y charlas informales. Resultado principal: La comunidad tiene conocimiento tradicional de los beneficios que ofrecen los recursos del ecosistema, pero no tiene las herramientas para lograr un sistema productivo sostenible; la zona de estudio tiene un gran potencial turístico, debido a las ventajas de paisaje e infraestructura; el uso actual del suelo es inadecuado con respecto a la normatividad ambiental. Conclusión principal: Es necesario formular e implementar estrategias de uso y conservación de humedales altoandinos que sean adecuados a las particularidades del ecosistema bajo estudio, puesto que las estrategias existentes a nivel nacional e internacional son muy generales.
Community participation is a relevant aspect in decisions making concerning the implementation of actions related to protection of natural heritage. In the present work, the main purpose is the participative construction of the guidelines for the use and conservation of wetlands in El Ocho and Páramo de Letras. The methodology includes the following steps: 1) review of secondary information; 2) a participatory environmental zoning of the productive systems using the talking maps technique and the AutoCAD tool; and 3) floral and touristic potential analysis, on the basis of traditional knowledge, by means of interviews to the community, potential tourists and informal talks. The main result of this research indicates that the community has traditional knowledge of the benefits offered by the ecosystem resources, but they do not have the necessary tools to achieve a sustainable productive system. The study area has a great touristic potential, due to its advantages of landscape and infrastructure but the current use of the land is inadequate according to the environmental law. The main conclusion of the work is that it is necessary to formulate and implement strategies for use and conservation of High Andean Wetlands which are adequate for the ecosystem under study, as the current national and international strategies are too general.