R. F. Vázquez

R. F. Vázquez
University of Cuenca | UC · Vicerectorado de Investigación /Laboratorio de Ecologia Acuatica (LEA)/Departamento de Ingeniería Civil

PhD in Engineering (Civil)
Carrying out research on water resources monitoring and modelling, remote sensing and gis, ecohydrology, ecohydraulics..

About

68
Publications
20,019
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
859
Citations
Introduction
Water Resources Research; Numerical modelling (Hydraulics, Hydrology; Hydro-geology, etc.); Remote Sensing and GIS; ....
Additional affiliations
September 2012 - present
University of Cuenca
Position
  • Lecturer
Description
  • - "Probability and Statistics" until August of 2015. - "Academic Writing" from September 2015. - MSc. Programme in Water Resources from September 2015. - MSc. Programme in Ecohydrology from September 2015.
May 2010 - February 2012
University of Cuenca
Position
  • Research Director
January 2010 - present
University of Cuenca
Position
  • Professor
Education
March 1998 - June 2003
KU Leuven
Field of study
  • Water Resources
October 1995 - September 1997
Vrije Universiteit Brussel
Field of study
  • Water Resources Engineering
October 1987 - December 1993
University of Cuenca
Field of study
  • Civil Engineering

Publications

Publications (68)
Article
Full-text available
Water chemistry and its ecological implications have been extensively investigated in temperate high‐mountain lakes because of their role as sentinels of global change. However, few studies have considered the drivers of water chemistry in tropical mountain lakes underlain by volcanic bedrock. A survey of 165 páramo lakes in the Cajas Massif of the...
Article
Full-text available
The effect of stage–discharge (H-Q) data uncertainty on the predictions of a MIKE SHE-based distributed model was assessed by conditioning the analysis of model predictions at the outlet of a medium-size catchment and two internal gauging stations. The hydrological modelling was carried out through a combined deterministic–stochastic protocol based...
Article
Full-text available
Monitoring water level changes is necessary to manage, conserve and restore natural, and anthropogenic lake systems. However, the in‐situ monitoring of lake systems is unfeasible due to limitations of costs and access. Furthermore, current remote sensing methods are restricted to large lakes and low spatial resolutions. We develop a novel approach...
Article
Full-text available
Aim This study aimed at investigating the taxonomic resolutions (TRs) of benthic macroinvertebrates for freshwater assessments in the scope of the functional trait approach (FTA). Location Macroinvertebrate samples were collected in 22 locations within the Paute River Basin (PRB), Ecuador, over three years (2010, 2011 and 2012). Methods Biologica...
Article
Full-text available
Sustainable river management requires a thorough understanding of the response of aquatic biota to riverine microhabitat variability. The purpose of this study was to assess macroinvertebrate hydraulic-habitat suitability in Ecuadorian Andean rivers to support habitat modelling for sustainable ecosystem management. 597 macroinvertebrate samples wer...
Article
As a function of the dominant vegetation cover, patterns of variation in the structure and composition of both, the aquatic macroinvertebrate communities and their functional feeding groups (FFG) were examined at pristine streams of two high Andean micro-catchments of southern Ecuador. Ten sampling segments were defined in the study streams surroun...
Article
Multivariate statistics -Soft Independent Modelling of Class Analogies (SIMCA), Principal Components Analysis (PCA), Multiple Regression (MR)- were used to search for key biotic and water quality (WQ) variables within a dataset/matrix collected over a five-year period in the Paute River Basin (Ecuador). Benthic macroinvertebrates and 27 descriptive...
Article
Full-text available
Education can help secure inclusive and resilient development around water resources. However, it is difficult to provide the latest science to those managing water resources (both now and in the future). Collectively, we hypothesize that dissemination and promotion of scientific knowledge using students as central agents to transfer theoretical kn...
Conference Paper
Full-text available
Future energy development relies on the use of alternative energy sources such as exploitation of deep geothermal energy from Hot Dry Rock (HDR). HDR reservoirs are considered strategical because of the great amounts of heat stored in deep basement. Here, a numerical model considering a discrete fracture network and data from the Soultz-Sous-Forets...
Poster
Full-text available
This poster shows a brief overview of "Dendrochronological analysis and growth patterns of Polylepis reticulata (Rosaceae in the Ecuadorian Andes" articles, as well as it shows a step by step processing of analysis of tree rings series.
Article
Relict tree species in the Andean mountains are important sources of information about climate variability and climate change. This study deals with dendroclimatology and growth patterns in Polylepis reticulata Hieron., growing at high elevation (mean of 4000 m a.s.l.) in three sites of the Ecuadorian Andes. The aims of the research were: (i) chara...
Chapter
Water is regional priority around the world but synthesis of water resource management aspects from local-to-global scales is currently not included in not currently included higher education curricula of Latin American and the Caribbean (LAC) universities. This leaves local populations vulnerable to future shifts in climate at global scales and ch...
Article
This study assessed the effects of hydrological events on aquatic communities at the mesohabitat scale (pool, run and riffle) in the high Andean region. Four headwater sites located in the Zhurucay microcatchment (southern Ecuador), with elevations higher than 3,500 m, were selected and monitored considering in each site a 50‐m‐long reach, and with...
Article
This study assessed the effects of hydrological events on aquatic communities at the mesohabitat scale (pool, run and riffle) in the high Andean region. Four headwater sites located in the Zhurucay microcatchment (southern Ecuador), with elevations higher than 3,500 m, were selected and monitored considering in each site a 50-m-long reach, and with...
Article
Full-text available
The water balance of an irrigation project in the Chilean semi-arid zone was modelled using the WEAP21 code. A combined deterministic/stochastic protocol was applied for defining the hydrological prediction intervals of the model. Climate Change potential implications on the useful life of the irrigation project (year 2070) were predicted consideri...
Article
A non-supervised (k-means) and a supervised (k-Nearest Neighbour in combination with genetic algorithm optimisation, k-NN/GA) pattern recognition algorithms were applied for evaluating and interpreting a large complex matrix of water quality (WQ) data collected during five years (2008, 2010-2013) in the Paute river basin (southern Ecuador). 21 phys...
Article
Full-text available
Macroinvertebrate life history and secondary production have rarely been measured in tropical highland streams even though these streams are highly heterogeneous and display unique ecological settings compared to both those in the tropical lowlands or in the temperate zone. We evaluated secondary production and life history attributes of the periph...
Article
Full-text available
The number, size, and shape of lakes are key determinants of the ecological functionality of a lake district. The lake area scaling relationships with lake number and volume enable upscaling biogeochemical processes and spatially considering organisms' metapopulation dynamics. These relationships vary regionally depending on the geomorphological co...
Article
Full-text available
The taxonomic composition of the litoral benthic limnetic crustacean communities, (branchiopods, copepods and ostracods) and macrophytes of the lacustrine water bodies of the Cajas National Park located in the Southern Andes of Ecuador have been studied in order to identify the most suitable taxa to be used as indicators of the ecological status of...
Article
Full-text available
Extensive sampling of 202 lentic water bodies (lakes, lagoons and ponds) located between 3150 and 4460 m a.s.l. in the Cajas National Park (South Ecuadorian Andes) has revealed the high interest of these mountain enclaves in tropical latitudes for the investigation of faunal and ecological aspects of the branchiopod fauna. The first results allowed...
Article
Full-text available
The main results of the monthly hydrological modelling of a tropical mountain catchment located at the northeastern part of Ecuador are presented herein. The study catchment is rather important for the development of the country, particularly owing to the fact that it is at the header of the contributing basin to the largest hydropower project of t...
Article
This paper depicts opinions that condense the thinking of different sectors (i.e., academia, government, private sector, etc.) dealing in certain degree with the management of Ecuadorian water resources. Particularly, the manuscript echoes the main conclusions of a national Workshop that was held in Quito by mid 2014, about the sustainable use of w...
Article
Full-text available
It is presented herein the main results of the hydrological modelling of the Lonquén river basin, with an intermittent regime, located in the northern region VIII (Bio-Bio) of Chile, which was conducted with the purpose of quantifying the water capacity of the basin in the context of the planning of an irrigation reservoir that is to irrigate about...
Article
Full-text available
RESUMEN El modelo Mecanicista Basado en Datos (DBM) se ha utilizado conjuntamente con el filtro de Kalman (como una técnica de asimilación de datos) para la predicción de caudales en una subcuenca ubicada en la parte alta de la cuenca del río Paute. Los resultados sugieren que el modelo DBM, conjuntamente con la técnica de asimilación de datos emp...
Article
Full-text available
RESUMEN La hidrología superficial y la subterránea de una cuenca cárstica ubicada en Bélgica se modelaron aplicando el código distribuido y basado en la descripción de procesos físicos MIKE SHE. La calibración y posterior validación del modelo se llevaron a cabo mediante un análisis temporal y uno espacial. Adicionalmente, se realizó un análisis d...
Article
Full-text available
The surface and groundwater hydrology of a karst catchment located in Belgium was modelled using the distributed physically based code MIKE SHE. The calibration and validation processes were carried out through a common split-sample (i.e., temporal) analysis as well as through a more specialised multi-site (i.e., spatial) analysis. Further, a sensi...
Article
A joint deterministic-stochastic protocol based on Monte Carlo simulations (MCS) was applied to the modelling of a medium size catchment using two significantly different sets of potential evapotranspiration (ETp) data, estimated through a Penman-based method. Modelling error was accounted using the Generalised Likelihood Uncertainty Estimation (GL...
Article
Full-text available
A Data-Based Mechanistic (DBM) model and the Nedbor-Afstromnings Model (NAM) were applied to simulate the rainfall-runoff relationship of two Andean basins, different in size, located in southern Ecuador. This article provides a comparative analysis of both modeling approaches, with emphasis on the evaluation of the model performance. The study rev...
Article
Full-text available
HYDRUS-1D, a one dimensional water movement and solute transport model, was applied to analyze a border irrigation event in an alfalfa plot located in the irrigation district of "La Violada" (Spain). The research encompassed monitoring of the irrigation event, the setting-up of the numerical model, model calibration and evaluation, and sensitivity...
Article
The hydrologic and nitrate (NO3-N) leaching dynamics of a maize field were respectively modelled with DRAINMOD and DRAINMOD-N. Experimental data of a 3-year period were available for model calibration and evaluation. Data from the first two years were used for model calibration whilst data from the remaining year were used for an initial evaluation...
Article
Full-text available
El proyecto plantea el desafío de desplegar actividades de investigación que proporcionen la base científica para la comprensión de los efectos del cambio climático sobre la hidrología y los recursos hídricos de la cuenca del Paute la misma que es fundamental entre otros aspectos para la generación de hidroelectricidad en Ecuador. Para ello, el pro...
Article
Full-text available
This paper provides the state-of-the-art in hydrologic modeling regarding its capability of predicting the effects of climate and land use change on the hydrological cycle. In conclusion, the research challenges are pinpointed which the community should address as to be able to observe and model regional-scale the coupled climate-water cycle in res...
Article
Full-text available
To better handle landscape heterogeneities in distributed hydrological modeling, an earlier work proposed a discretization based on nested levels, which leads to fully unstructured modeling meshes. Upon such a discretization, traditional numerical solutions must be adapted, especially to describe lateral flow between the unstructured mesh elements....
Article
Full-text available
The analysis of the most commonly used measures of hydrological/hydraulic model performance was herein carried out by means of their statistical examination and illustrative modelling applications. In doing so, the model performance indexes were classified in two groups, according to the type of error (or residual) that those indexes are measuring:...
Conference Paper
Full-text available
Se han establecido para los principales ríos de la cuenca del Ebro las tendencias en el caudal y en las concentraciones de sales (sólidos disueltos totales, SDT), nitrato (NO3) y fosfato (PO4) para los periodos Octubre 1961 - Septiembre 2008 (6 estaciones) y Octubre 1975 - Septiembre 2008 (31 estaciones) utilizando la información recopilada por la...
Article
Full-text available
Despite its importance, the hydrology of the Andean catchments is at the moment not well known. Hence, facing the continuously growing concern from society for a sustainable use of water resources and the conservation of mountain catchments of the Ecuadorian Austral region, it is relevant to start with research initiatives for getting to know, amon...
Article
A distributed model was used to simulate the main hydrological processes in the Ourthe catchment, situated in the southern hilly part of Belgium. The study revealed important uncertainties associated with the current modelling, particularly with regard to the data of the groundwater system. These are likely to influence the global performance of th...
Article
Full-text available
The recent discussion on university ranking raised quite some commotion among the Ecuadorian academic society. Because Ecuadorian universities do not produce Nobel Prize winners, public and private investment in research are limited, academicians hardly produce articles in recognized scientific journals, among other factors, are responsible that th...
Conference Paper
Full-text available
Un modelo unidimensional de movimiento de agua y de transporte de solutos, HYDRUS-1D, se aplicó a los datos de una parcela de alfalfa ubicada en el polígono de riego de “La Violada” (España) con la intención de estudiar la interacción suelo-agua en la zona no saturada ligada al riego por inundación. Se efectuó el seguimiento de un evento de riego c...
Article
The generalised likelihood uncertainty estimation (GLUE) approach was applied to assess the performance of a distributed catchment model and to estimate prediction limits after conditioning based on observed catchment-wide streamflow. Prediction limits were derived not only for daily streamflow but also for piezometric levels and for extreme events...
Article
This paper suggests a multi-criteria protocol for appropriately evaluating the predictions of hydrologic models during calibration and evaluation stages. The protocol includes different statistical, analytical and visual criteria such as analysis of peak and low flows, cumulative volumes, extreme value statistics, performance statistics, etc. Furth...
Article
Full-text available
Les modèles hydrologiques spatialisés permettent de prendre en compte l'hétérogénéité des surfaces continentales dans la modélisation du cycle de l'eau. Ils sont donc des outils privilégiés pour aborder les questions d'impact des modifications de l'occupation des sols sur les ressources en eau, notamment souterraines. Nous présentons les principes...
Article
Summary A 586-km2 catchment was modelled with the distributed hydrologic model MIKE SHE. Coarse digital elevation models (DEMs) having a 600-m resolution and gridded from a set of elevation points geographically distributed with a much finer resolution were used in the modelling with the purpose of investigating potential effects of the DEM generat...
Conference Paper
Full-text available
The hydrological dynamics of a medium size catchment were modeled with the distributed code MIKE SHE. This paper depicts the characteristics of the conceptual model of the studied catchment and assesses the quality of the stream-flow and piezometric predictions. In doing so, different statistical, analytical and visual criteria were applied on the...
Article
Full-text available
Se modeló la hidrología superficial y subterránea de una cuenca media con el código MIKE SHE. Se llevó a cabo un Análisis de Sensibilidad (AS) variando datos de topografía y evapotranspiración (ET), variables importantes para modelar el balance hídrico de una cuenca. Se generaron tres Modelos de Elevación Digital (MED) para preparar igual número de...
Article
Full-text available
To support a sensitivity analysis in the framework of catchment modeling, three potential evapotranspiration (ETp) scenarios were generated by means of two Food and Agriculture Organization (FAO) approaches, namely, the FAO-24 and the FAO-56 approaches. The crop ETp was estimated as a function of the reference evapotranspiration (ETp) by means of t...
Article
The effect of the method of calculating a time series of crop potential evapotranspiration (ETp) on both the model performance and the magnitude of the main effective parameters of a distributed hydrological model was assessed on the basis of an independent multi-calibration. The ETp was estimated as a function of the reference evapotranspiration (...
Thesis
Full-text available
The PhD research is related to distributed catchment modelling, a relative new topic with growing interest. Such interest in the subject is increasing rapidly under the society's pressure to accurately assess the impact of human activity on the natural resources, among which, water is one of the most vulnerable. Clear understanding of how human int...
Article
Full-text available
The NAM module of the MIKE-11 code was applied to four Belgian Catchments with the intention of finding relationships between model parameters and physical catchment descriptors (PCD). Ten NAM module parameters (NMP) out of the maximum set of 15 parameters were used since the irrigation and snowmelt components were not considered. Model calibration...
Conference Paper
Full-text available
Overview of the approaches implemented in this research Mainly due to the lumped daily time step involved in this modelling exercise, the purpose of this research was to obtain uncertainty predictions estimates for a period involving seasons rather than individual storm events. A one-year period of analysis was chosen in conjunction with an 8-month...
Article
Full-text available
This article is a preliminary report of a research activityfocusing on the effects of the crop potentialevapotranspiration (ETp) generation methods on boththe performance of a distributed catchment model as well ason the magnitude of its main effective parameters. Thereferred effects were assessed on the basis of theindependent Multi-Calibration (M...
Conference Paper
Full-text available
The effect of few techniques for deriving a Digital Terrain Model (DTM) on the distributed modelling of a medium size catchment was investigated. For assessing the DTM elevations, they were compared not only to the elevation data but also to each other. Besides simple DTM statistics, additional geomorphic relationships were investigated. In a broad...
Conference Paper
The effect of some techniques for obtaining a Digital Terrain Model (DTM) on both the performance as well as on the magnitude of the main effective parameters of an integral hydrological model was assessed on the basis of the independent re-calibration of the corresponding models (built on the basis of the MIKE SHE code). Thus, three DTMs were insp...
Article
Full-text available
The present study discusses the application of the physically based distributed MIKE-SHE code to a medium size catchment using different grid sizes to investigate scale effects on the model results. First a 600 m grid-square model was calibrated. This was then subjected to a multi-resolution (MR) validation test by using the effective parameters of...
Conference Paper
Full-text available
http://147.213.145.2/svh/ERB-abstracts/Vasquez-1_upraveny.pdf
Conference Paper
Full-text available
This paper is a preliminary report of a research activity focusing on the effect of the magnitude of the crop potential evapotranspiration (ETp) time series on both the performance of an integral hydrological model as well as on the magnitude of its main effective parameters. This effect was assessed on the basis of the independent re-calibration o...
Article
Full-text available
Physically based distributed models are rarely calibrated and validated thoroughly because of lack of data. In practice, validation is limited to comparison of simulated and predicted discharges in a catchment, or of simulated and observed piezometric levels in some calibrated wells. Rarely, internal noncalibrated wells or discharge stations are in...
Article
Full-text available
CALIBRATION AND VALIDATION PROCEDURE FOR THE DISTRIBUTED PHYSICAL-BASED HYDROLOGICAL MIKE SHE MO- DEL, WITH APPLICATION TO THE CATCHMENT OF THE RIVERS GROTE AND KLEINE GETE Calibration and validation of the MIKE SHE model was performed with application to a medium sized catchment. The model was calibrated both against daily discharge measurements f...
Article
Full-text available
This paper describes the data requirements, data sources and data flow for a distributed physically based hydrological model, with application to a medium sized catchment. The MIKE SHE model is used and the catchment under study comprises the subcatchments of the Grote Gete (355 km2) and the Kleine Gete (266 km2) up to their convolution point at Bu...

Network

Cited By

Projects

Projects (7)
Project
Water is regional priority around the world but synthesis of water resource management aspects from local-to-global scales is currently not included in not currently included higher education curricula of Latin American and the Caribbean (LAC) universities. This leaves local populations vulnerable to future shifts in climate at global scales and changes in land usage at regional scales. To close this gap, the project “WATERMAS—Water Management and Climate Change in the Focus of International Master Programs”, is financed by the European Union. The project will develop and establish a new standard of higher educational and scientific knowledge exchange between Europe and Latin America as well as the Caribbean. This will be done leveraging existing Master’s courses/programs of Water Management at the various partner universities in Latin America (LA), respectively in Cuba and in Ecuador. The scope of the project is to enable the development of strategies for the adaptation of local water management facilities and the biodiversity with regard to future challenges in the partner countries targeting a Society-Education- Research Nexus. The project addresses sustainability under the Teaching-Research-Practice Nexus, particularly the UN Sustainability Development Goals (SDG) 4 (Quality Education), 6 (Clean Water and Sanitation), 11 (Sustainable Cities and Communities), and 13 (Climate Action). Besides the water management aspects the biodiversity guaranties the functionality of eco system services, which plays an important role by considering the value of the nature for the mankind.
Archived project
Las cuencas hidrográficas son sistemas naturales cuyo conocimiento es fundamental para la adecuada toma de decisiones. Esto es especialmente patente en países como el Ecuador donde la generación hidroeléctrica es parte fundamental de su matriz energética. Específicamente, conocer el comportamiento de las cuencas de Paute y Jubones significaría un paso importante en su manejo racional. En este contexto el pronóstico de caudales es fundamental para poder planificar el despacho eléctrico. Sabiendo los efectos que el cambio climático tiene sobre las precipitaciones, surge la necesidad de saber cómo este cambio climático afectará al régimen de lluvias. El proyecto Desarrollo de herramientas computacionales para pronóstico de caudales a tiempo real y downscaling de GCMs busca elaborar y analizar las herramientas adecuadas para realizar dos tareas de gran importancia para el conocimiento del funcionamiento de las cuencas de Paute y Jubones como sistemas naturales: por un lado, la relación lluvia-escorrentía y, por otro, el efecto del cambio climático en las precipitaciones a nivel de cuenca, partiendo de modelos de circulación global. Se analizarán varios tipos de modelos, varios tipos de métodos, con el fin de llegar a tener un conocimiento más profundo del funcionamiento y las prestaciones de las herramientas computacionales estudiadas desde diversos puntos de vista. La idea fundamental tras este proyecto es que no existe el modelo ideal para todo tipo de aplicación y que por tanto es importante conocer varias formas de aproximarse al mismo problema. Por esto, para el pronóstico de caudales se usarán técnicas de inteligencia artificial, de minería de datos, así como modelos conceptuales discretizados usando métodos numéricos; mientras que para la desagregación (downscaling) de modelos de circulación global se usarán tanto métodos empíricos como dinámicos. De esta manera, se contará con criterios bien fundamentados de la aplicabilidad de los diversos métodos.
Project
The main objective of this study is to establish the scientific basis to analyse the ecological response of aquatic communities to hydrological changes (both natural and anisotropic) and thus being able to estimate, in the future, ecological flow regimes in the basin of the Yanuncay River (Ecuador), under the complementary approaches of eco-hydrology and eco-hydraulics.