Search

Your search keyword '"José Miguel Andreu Rodes"' showing total 2 results
Start Over Author "José Miguel Andreu Rodes"
2 results on '"José Miguel Andreu Rodes"'

1. Geoenvironmental Effects of the Hydric Relationship Between the Del Sauce Wetland and the Laguna Verde Detritic Coastal Aquifer, Central Chile

Author

Blanca Gana, José Miguel Andreu Rodes, Paula Díaz, Agustín Balboa, Sebastián Frías, Andrea Ávila, Cecilia Rivera, Claudio A. Sáez, and Céline Lavergne

Subjects
wetland, coastal aquifer, groundwater, hydrogeochemistry, Science
Abstract

In the central region of Chile, the Mega-Drought together with the demographic increase near the coast threatens groundwater availability and the hydrogeological functioning of coastal wetlands. To understand the hydric relationship between an aquifer and a wetland in a semi-arid coastal region of Central Chile (Valparaíso, Chile), as well as its geoenvironmental effects, four data collection campaigns were conducted in the wetland–estuary hydric system and surroundings, between 2021 and 2022, including physical, hydrochemical, and isotopic analyses in groundwater (n = 16 sites) and surface water (n = 8 sites). The results generated a conceptual model that indicates a hydraulic connection between the wetland and the aquifer, where the water use in one affects the availability in the other. With an average precipitation of 400 mm per year, the main recharge for both systems is rainwater. Three specific sources of pollution were identified from anthropic discharges that affect the water quality of the wetland and the estuary (flow from sanitary landfill, agricultural and livestock industry, and septic tank discharges in populated areas), exacerbated by the infiltration of seawater laterally and superficially through sandy sediments and the estuary, increasing salinity and electrical conductivity in the coastal zone (i.e., 3694 µS/cm). The Del Sauce subbasin faces strong hydric stress triggered by the poor conservation state of the riparian–coastal wetland and groundwater in the same area. This study provides a detailed understanding of hydrological interactions and serves as a model for understanding the possible effects on similar ecosystems, highlighting the need for integrated and appropriate environmental management.

Published
2024
Full Text
View/download PDF

2. Groundwater intensive use and mining in south-eastern peninsular Spain: Hydrogeological, economic and social aspects

Author

Teodoro Estrela, Andrés Sahuquillo, Emilio Custodio, Marisol Manzano, Ramón Aragón, Alberto del Villar, Luis Rodríguez-Hernández, José Luis García-Aróstegui, José Miguel Andreu-Rodes, Javier Ferrer, Universidad de Alicante. Departamento de Ciencias de la Tierra y del Medio Ambiente, Geología Aplicada e Hidrogeología, Cetaqua, and Universitat Politècnica de Catalunya

Subjects
Environmental Engineering, Resource (biology), socioeconomy, 010504 meteorology & atmospheric sciences, Cash crop, 0208 environmental biotechnology, Hydrogeology, Aquifer, 02 engineering and technology, Groundwater mining, 01 natural sciences, intensive exploitation, groundwater mining, South-eastern Spain, Environmental Chemistry, Reserve depletion, Waste Management and Disposal, 0105 earth and related environmental sciences, geography, Governance, geography.geographical_feature_category, Intensive farming, Environmental engineering, Groundwater recharge, Pollution, Geodinámica Externa, 020801 environmental engineering, hydrogeology, governance, Socio-economy, Intensive exploitation, south-eastern Spain, Water resource management, reserve depletion, Surface water, Groundwater, Geology, Water use
Abstract

Intensive groundwater development is a common circumstance in semiarid and arid areas. Often abstraction exceeds recharge, thus continuously depleting reserves. There is groundwater mining when the recovery of aquifer reserves needs more than 50 years. The MASE project has been carried out to compile what is known about Spain and specifically about the south-eastern Iberian Peninsula and the Canary Islands. The objective was the synthetic analysis of available data on the hydrological, economic, managerial, social, and ethical aspects of groundwater mining. Since the mid-20th century, intensive use of groundwater in south-eastern Spain allowed extending and securing the areas with traditional surface water irrigation of cash crops and their extension to former dry lands, taking advantage of good soils and climate. This fostered a huge economic and social development. Intensive agriculture is a main activity, although tourism plays currently an increasing economic role in the coasts. Many aquifers are relatively high yielding small carbonate units where the total groundwater level drawdown may currently exceed 300 m. Groundwater storage depletion is estimated about 15 km3. This volume is close to the total contribution of the Tagus-Segura water transfer, but without large investments paid for with public funds. Seawater desalination complements urban supply and part of cash crop cultivation. Reclaimed urban waste water is used for irrigation. Groundwater mining produces benefits but associated to sometimes serious economic, administrative, legal and environmental problems. The use of an exhaustible vital resource raises ethical concerns. It cannot continue under the current legal conditions. A progressive change of water use paradigm is the way out, but this is not in the mind of most water managers and politicians. The positive and negative results observed in south-eastern Spain may help to analyse other areas under similar hydrogeological conditions in a less advanced stage of water use evolution., Universitat Politècnica de Catalunya, España, Universidad de Alicante, España, Instituto Geológico y Minero de España, España, Confederación Hidrográfica del Júcar, España, Facultad de Biología, Universidad de Murcia, España, Universidad Politécnica de Cartagena, España, Diputación de Alicante, España, Universitat Politècnica de València, España, Universidad de Alcalá de Henares, España

Published
2016

Catalog

Books, media, physical & digital resources
See catalog results