Miguel Rodríguez-Rodríguez

Universidad Pablo de Olavide | UPO · Department of Physical, Chemical and Natural Systems

The Doñana National Park (DNP) is a protected area with water resources drastically diminishing due to the unsustainable extraction of groundwater for agricultural irrigation and human consumption of a nearby coastal city. In this study, we explore the potential of wavelet analysis applied to high-temporal-resolution groundwater-and-surface-water t...

The time series data from gauging stations in the basin made it possible to assess the state of the aquifers and relating it to human overexploitation and potential climate change. This study is part of the Project 'Nature-based Solutions for the management of the river Guadaira' and it is supported with European Regional Development Funds (FEDER...

The project "Nature-based solutions for the management of the Guadaíra river" (SbN) tries to describe the reality of the Guadaíra river (Andalusia), a basin that allows the development of multiple populations in the only uninterrupted green structure that connects the mountains of Cádiz and Malaga with the Guadalquivir estuary and Doñana. We try to...

Trace elements are serious pollutants in the natural environment and are of increasing concern due to the adverse effects at global scale. To refine the current understanding of trace metal distribution and variability in natural environments, concentrations of dissolved trace metals (Ag, Al, As, B, Ba, Be, Co, Cr, Cd, Cu, Fe, Hg, Mo, Ni, Pb, Sb, S...

This paper aims to determine how both climate and local drivers, such as groundwater withdrawals influence surface water - groundwater interactions in Groundwater Dependent Ecosystems (GDEs). We studied the hydroperiod in eight of the most representative ponds of Doñana National Park (southern Spain) during a 21-year period. We analyzed the average...

Rainfall is the major contribution for groundwater recharge in arid and semiarid climates, therefore a key factor in water resources estimation. This work presents the results of an in-depth study in Doñana National Park concerning groundwater recharge behavior over a long period (1975–2016). The spatio-temporal kriging algorithm was used as a supp...

Time series analysis methods have been used to detect behavioral patterns in a set of nine time series. These series contained information in a 3‐hour time step about meteorological, hydrological and tidal data of a sand dune pond area located in Doñana National Park in the southwest of Spain. The methods used, such as wavelet analysis and additive...

The hydrological response of shallow ponds to groundwater withdrawal has been of growing concern in the Doñana National Park (southern Spain) in recent decades. This study examines the role of groundwater in maintaining the hydroperiod (i.e. the hydrological regime) in the Park’s main dune ponds, by quantifying the groundwater fluxes to/from them....

The physical limnology of a shallow pond system was characterized using field measurements of water temperature, pH, and electrical conductivity (EC). We determined the spatial variability in surface and groundwater temperature, pH, and EC along the pond’s shore and along the several pond-shore transects, analyzed the water column temperature gradi...

Anthropogenic pressure for groundwater resources in the Doñana area (southern Spain) has caused concern in relation to the hydrological functioning of groundwater dependent ecosystems. In this study we have characterized the hydrological functioning of some of the most important dune ponds of the Doñana Area: Santa Olalla (SOL), Zahillo (ZAH) and S...

Many of the world's wetlands may be profoundly affected by climate change over the coming decades. Although wetland managers may have little control over the causes of climate change, they can help to counteract its effects through local measures. This is because direct anthropogenic impacts, such as water extraction and nutrient loading, work in c...

Many of the world's wetlands may be profoundly affected by climate change over the coming decades. Although wetland managers may have little control over the causes of climate change, they can help to counteract its effects through local measures. This is because direct anthropogenic impacts, such as water extraction and nutrient loading, work in c...

The impact derived from the exploitation of natural resources can be quantified using statistical indicators. We analyse the groundwater level evolution of jeopardised aquifers using the Temporal Variation Index and the Piezometric Situation Index. The application of both piezometric indicators to the aquifers linked to the Fuente de Piedra playa l...

In this investigation, hydrological time series of three ponds located in the province of Córdoba (southern Spain) at a daily scale has been analyzed. For the first time, a detailed evolution of the water level of Jarales, Conde, and Amarga ponds has been acquired by means of the installation of level loggers in the deepest point of each of the pon...

The hydrological regime of Fuente de Piedra playa-lake (Málaga, southern Spain) has been significantly affected by the intensive exploitation of groundwater in the area. The playa-lake is situated above clays, marls, and gypsum, and under unaltered conditions received surface-subsurface runoffwithin thewatershed aswell as groundwater discharge from...

Los tradicionales sistemas de gestión del agua, que se mantienen desde época andalusí en La Alpujarra (Sierra Nevada), incluyen entre su infraestructura hidráulica a las acequias de careo. Estos canales excavados en el terreno están diseñados para recargar agua procedente del deshielo (usualmente entre marzo y junio) en la zona de alteración de las...

In Andalusia (Spain), there are more than 45 semiarid playa lakes protected as natural reserves and related to karstic outcrops. Some of them are located over regional karstic aquifers and have internal drainage networks with sporadic surface outlets, such as sinkholes (compound sinks), but the majority of such playas have no internal drainage syst...

The subject of this paper is the detailed hydrological simulation of two playa lakes located in southern Spain from January 2011 to March 2012 on a daily basis. These playas are placed over a 400-km2 shallow aquifer, which is exposed to an increasing stress caused by agricultural activities, mainly olive grove plantations. The objective of the pape...

Andalusia's lowland countryside has a network of small geographically isolated playa lakes scattered across an area of 9000 km2 whose watersheds are mostly occupied by clayey rocks. The hydrological model proposed by the authors seeks to find equilibrium among usefulness, simplicity, and applicability to isolated playas in a semiarid context elsewh...

Quantifying groundwater recharge in carbonate aquifers located in semi-arid regions and subjected to intensive groundwater use is no easy task. One reason is that there are very few available methods suitable for application under such climatic conditions, and moreover, some of the methods that might be applied were originally designed with referen...

The La‐Lantejuela playa‐lakes endorheic complex is a groundwater‐dependent ecosystem located within the Guadalquivir River Basin (Southern Spain) in an area mainly devoted to agriculture production with increasing groundwater extractions for irrigation from the Osuna‐La Lantejuela (O‐LL) aquifer. The O‐LL aquifer was hydrogeologically characterised...

The objective of this study was to test the applicability of groundwater sustainability indicators defined by UNESCO, together with the International Academy of Environmental Sciences (IAES), the International Association of Hydrogeology (IAH) Group on Groundwater Indicators and the Geological Survey of Spain (IGME), to the aquifer scale. We select...

Medina playa lake, a Ramsar site in western Andalusia, is a brackish lowland lake of 120 ha with an average depth of 1 m. Water flows into Medina from its 1,748-ha watershed, but the hydrology of the lake has not previously been studied. This paper describes the application of a water budget model on a monthly scale over a 6-year period, based on a...

We analyzed the main morphometric, climatic and hydrochemical characteristics of 48 ponds and playa-lakes of the semi-arid Guadalquivir River basin (southern Spain). Based on a simple conceptual model we were able to develop a Hydrological Function Index (HFI) that relates the effective rainfall in each playa-lake to its watershed (WS). We verified...

This work was made to asses the groundwater quality in relation to agricultural uses and/or public supply in the main groundwater bodies (GWB) of the Guadalquivir River Basin (southern Spain) according to the recommendations of the Water Framework Directive. The study was made for both carbonate and sedimentary-rock/alluvial GWBs of the Basin in or...

Hydrochemical data from 1998 to 2004 in the groundwater of Lora and Mingo aquifers .

The main morphometry hydrogeochemical and climatic indexes were analyzed in 26 ponds of the of the Guadalquivir basin, related to the materials of the subbetic front. It has been verified that, in most cases, the surface basin (CVS) is the hydrologie unit from which these ecosystems receive the surface and ground water inputs. Therefore, the CVSs c...

The carbonate aquifers of Lora and Mingo form part of the hydrogeological unit of Sierra de Estepa (SE Spain). By means of time series analysis and a 1D numerical groundwater model, groundwater exploitation was quantified and the mean annual recharge in both systems was estimated (2001-2004). During this period, the Lora and Mingo aquifers received...

The European Water Framework Directive (WFD) constitutes a new view of water resources management and provides a challenge in the development of new and accurate methodologies for the classification of water bodies. It is necessary to improve and develop approaches based upon scientific knowledge in order to achieve requirements of comparability th...

By means of a simple water balance model, together with hydrogeochemical and morphological interpretation, the hydrogeological characteristics of a series of playa lakes forming an endorheic complex within the Guadalquivir river basin in Southern Spain (La Lantejuela) have been evaluated. The lakes are demonstrated to be groundwater-dependent ecosy...

This research reports the characterisation of ground-and surface-water inter-action in the Fuente de Piedra Salt lake basin in southern Spain by a combined approach using hydraulic, hydrogeochemical and stable isotope data. During three sampling cam-paigns (February 2004, 2005 and October 2005) ground-and surface-water samples were collected for st...

The groundwater resources of the aquifer of the Aracena mountain range (Huelva) are being studied in detail by the Spanish Geological Survey. In these studies the hydrochemistry plays a pivotal role and contributes to validate the hypotheses of hydrogeological functioning based on hydrodynamic data. Several sampling campaigns have been made to char...

I characterized 33 small water bodies from the southern Spain provinces of Seville, Cadiz, and Malaga using hydrochemistry (geochemical analyses), hydrology (water budgets), geological surveys, and local knowledge. Based on hydrogeological criteria (association with permeable materials), water bodies were grouped into three categories: 1) wetlands...

The analysis and interpretation of physical and limnological parameters combined with hydrochemical (major ions and stable isotopes) analyses enabled us to evaluate the hydrogeological functioning and the hydrogeochemical evolution of groundwater in two adjacent lakes related to a karstic aquifer (Archidona, southern Spain). Lake water, groundwater...

For this paper, a physical heat budget model has been implemented using a fine-scale high-resolution meteorological data set in order to explore the influence of external factors, such as solar radiation and wind speed on the thermal regime and, therefore, the ecological dynamics of a shallow coastal ecosystem, Nueva lagoon (Southeast Spain). In ad...

Playa lakes occur in arid and semi-arid climates and have a significant economic, ecological and cultural value. They are particularly vulnerable to changing hydrologic regimes due to climate change or human activities. We determined the hydrological regime of 10 playa lakes in southern Spain based on water budgets for a 5-year period (1997–2001)....

This study presents the results of 10 years of field investigation in Fuente de Piedra Playa Lake located in southern Spain. These field observations along the playa’s shore revealed evidence of a forced convective flow and the existence of density interface below the playa basin. An upward flux of groundwater from underlying formations could be a...

This work examines the diel change of energy storage and its associated patterns of thermal stratification during the ice‐free period in a high mountain lake (La Caldera Lake, Sierra Nevada, Spain), in response to meteorological conditions. Bihourly data have been implemented to a standard methodology of surface heat exchange calculations in lakes....

Similar compositional and genetic characteristics for the recently deposited sediments in some lakes and ponds of the north of the Málaga province have been observed. Nevertheless, it seems to exist some differences in their mineralogical and geochemical evolution as well as in the degree of alteration of the original sediment. The mineral alterati...

Similar compositional and genetic characteristics for the recently deposited sediments in some lakes and ponds of the north of the Málaga province have been observed. Nevertheless, it seems to exist some differences in their mineralogical and geochemical evolution as well as in the degree of alteration of the original sediment. The mineral alterati...

Two small karstic lakes of the province of Málaga (Andalusia, Spain; Lake Grande and the Lake Chica de Archidona) were monitoredfor common limnological variables. These two lakes show important differences in their physical, chemical and biological features. Lake Chica is meromictic, while Lake Grande is monomictic. The composition of monimolimnion...