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Ana García-Vega

Ana García-Vega
ITAGRA.CT · Group of Applied Ecohydraulics

PhD

About

38
Publications
22,002
Reads
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254
Citations
Citations since 2017
29 Research Items
244 Citations
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Introduction
I work at the Group of Applied Ecohydraulics (www.gea-ecohidraulica.org) of the University of Valladolid and ITAGRA.CT (Spain). My current research focus is on fish migration and ecohydraulics.
Education
October 2015 - December 2020
Universidad de Valladolid
Field of study
  • Conservation and Sustainable Use of Forest Systems
September 2013 - July 2015
Universidad de Valladolid
Field of study
  • Conservation and Sustainable Use of Forest Systems
September 2009 - June 2012
Universidad de Valladolid
Field of study
  • Forestry Engineer

Publications

Publications (38)
Article
Full-text available
Migrating fish are vulnerable to anthropogenic disturbances and, to assess the impact of human activities in freshwater ecosystems, it is vital to understand their movement patterns. The aim of this study is to describe the upstream movements of potamodromous brown trout Salmo trutta (seasonal and daily) and the potential environmental triggers in...
Article
Brown trout uses river flow and thermal regimens as main stimuli for initiating and maintaining behavioral reactions such as migration and spawning. Therefore, anthropogenic alterations on these factors may have strong impacts on its populations. The aim of this work is to understand these consequences by assessing potamodromous brown trout movemen...
Article
Full-text available
This study aims to describe pre-reproductive movements of Luciobarbus bocagei and Pseudochondrostoma duriense in a regulated canyon-stretch of the Tormes River (Spain), with high environmental variability, semipermeable barriers, and fishway retrofitting actions. The main objectives were to identify peak migration dates and environmental drivers, t...
Article
Effective protection of migratory fish requires long‐term conservation encompassing active restoration and management measures with follow‐up studies. The main findings of long‐term (1995–2019) monitoring of anadromous and potamodromous brown trout Salmo trutta in the River Bidasoa are presented. The main aims were evaluating trout number and media...
Article
Full-text available
Stepped fishways are the most popular solutions to enable the free movement of fish fauna through weirs and dams. Given the flow variation of rivers throughout the year, successful fish migration through stepped fishways relies on the accurate discharge calculation and their modeling under variable scenarios. This study aims to propose a general me...
Article
Water temperature and flow velocity directly affect the fish swimming capacity, and thus, both variables influence the fish passage through river barriers. However, their effects are usually disregarded in fishway engineering and management. This study aims to evaluate the volitional swimming capacity of the Northern straight-mouth nase (Pseudochon...
Article
Full-text available
This work aims to assess brown trout (Salmo trutta) passage through a free-flow pool-weir-type fishway with hydrodynamic notches and extreme water drops between pools. It consists of an old-school fishway design, commonly constructed in salmon rivers of Spain during the period of 1950–1980. To assess their performance, a field test was designed wit...
Chapter
Full-text available
This chapter deals with the conventional upstream fish passage technologies developed for a safe fish migration at run-of-river hydropower plants (HPPs). It covers the factors influencing successful migration, current status, practices and challenges, novel developments, recommendations and outlook. Main focusses of this chapter are on the attracti...
Article
Full-text available
River fragmentation and alterations in flow and thermal regimes are the main stressors affecting migrating fish, which could be aggravated by climate change and increasing water demand. To assess these impacts and define mitigation measures, it is vital to understand fish movement patterns and the environmental variables affecting them. This study...
Article
Full-text available
The monitoring of river discharge is vital for the correct management of water resources. Flat-V gauging weirs are facilities used worldwide for measuring discharge. These structures consist of a small weir with a triangular cross-section and a flat “V”-shaped notch. Their extensive use is a consequence of their utility in the measurement of both l...
Preprint
Full-text available
The monitoring of river discharge is vital for the correct management of water resources. A worldwide facility used for measuring discharge are flat-V gauging weirs. These structures consist of a small weir, with a triangular cross-section and a flat “V”-shaped notch. Their extensive use is a consequence of their utility in the measurement of both...
Article
Full-text available
Stepped fishways are structures that allow the free movement of fish in transversal obstacles in rivers. However, the lack of or incorrect maintenance may deviate them from this objective. To handle this problem, this research work presents a novel low-cost sensor network that combines fishway hydraulics with neural networks programmed in Python (K...
Article
The lateral line system allows fish to sense the surrounding hydrodynamics via changes in the pressure, acceleration and velocity fields, providing additional information about physical habitat structure. Relations between fish and habitat preference have been traditionally inferred using the parameters of water depth, time-averaged velocity, subst...
Thesis
Full-text available
Many fish species need to move between different habitats in order to complete their life cycles. As a result, migration responds to internal and external factors, with environmental variables, such as river flow and thermal regimes, acting as the main stimuli for the onset and maintenance of migratory behavior in freshwater fish. Moreover, river f...
Article
Full-text available
Fish need to move upstream and downstream through rivers to complete their life cycles. Despite the fact that fishways are the most commonly applied solution to recover longitudinal con-nectivity, they are not considered viable for downstream migration. Therefore, alternative facilities are recommended to facilitate downstream migration. However, a...
Article
Fishways are used worldwide to restore fish migration routes. However, there are few standardized metrics that allow the comparison of their performance in a consistence manner. This paper aims to assess fishway internal passage using two standardized metrics: passage success and transit time. Data from selected 20 field stepped fishways evaluation...
Article
Restoring the longitudinal connectivity of rivers is one of the main objectives of environmental European directives and policies. Fish passes or fishways are one of the most common actions for its restoration. Despite the great number of fish passes constructed during the last two decades to comply with these policies, few of them have been assess...
Article
Full-text available
Endemic freshwater fish from semiarid environments are among the most threated species in the world due to water overexploitation and habitat fragmentation problems. Stepped or pool-type fishways are used worldwide to reestablish longitudinal connectivity and mitigate fish migration problems. Many of them are being installed or planned in rivers of...
Preprint
Endemic freshwater fish from semiarid environments are among the most threated species in the world due to the water overexploitation and habitat fragmentation problems. Stepped or pool-type fishways are used worldwide to reestablish longitudinal connectivity and mitigate fish migration problems. Many of them are being installed or planned in river...
Conference Paper
Full-text available
La gestión de los recursos hídricos precisa de datos fiables del caudal circulante por los ríos. Las estaciones de aforo V-flat proporcionan información de calidad, especialmente para flujos bajos, de ahí su proliferación en España durante este siglo. Sin embargo, en función de sus dimensiones, del salto de agua que provoca y del caudal circulante,...
Conference Paper
Full-text available
Las escalas para peces de estanques sucesivos ayudan a mitigar los problemas a la migración de los peces que causan las barreras artificiales en los ríos, y son utilizadas en todo el mundo para restaurar la conectividad longitudinal. Durante el período 2015/16, en el contexto del proyecto LIFE+ Segura Riverlink-LIFE12 ENV/ES/001140-, cuatro de esto...
Article
Full-text available
La construcción de obras transversales en los cursos de agua causa, entre otros aspectos, un gran impacto en la continuidad longitudinal de los ecosistemas fluviales. Para paliarlo y permitir el libre desplazamiento de la fauna (especialmente peces) es frecuente la construcción de pasos piscícolas. Sin embargo, a pesar de haberse construido en gran...
Article
Full-text available
La trucha común (Salmo trutta) es una especie ampliamente distribuida a lo largo del mundo y de gran importancia social y económica. En general, el descenso de la temperatura del agua y el aumento de caudal estimulan su migración reproductiva. Por lo tanto, alteraciones antropogénicas de estos factores pueden causar impactos negativos en sus poblac...
Article
Global stocks of freshwater fish have been on the decline for decades, driven in part by the obstruction of their migration routes by anthropogenic barriers. To mitigate such impacts, fishways have been developed to facilitate bidirectional fish migration. These structures are affected by the hydrological variability of rivers, which can cause chan...
Article
Fishways are structures that aim to achieve the free movement of fish through transversal obstacles in rivers. Despite the wide research about their performance, their hydraulic study and characterization has been so far limited to uniform hydraulic conditions which are usually difficult to reach in natural scenarios, either because inaccurate buil...
Article
Full-text available
Los lagos y lagunas de alta montaña no son un rasgo típico del paisaje de la Península Ibérica, sino más bien una excepción en el medio natural, por ello su estudio y conservación presenta gran interés. Este trabajo surge con objeto de inventariar y caracterizar un conjunto de diecisiete complejos lagunares ubicados en las provincias de Palencia y...
Article
Full-text available
Vertical slot fishways are a type of fish pass of wide operating range that allow fish to move across obstacles in rivers. This study aims to model the performance of these structures, under uniform and nonuniform flow conditions, using discharge coefficients involving the downstream water level together with a logical algorithm. This will allow an...
Article
Full-text available
The aim of this article is to establish guidelines for the calculation of log-crib walls stability, popularly known like Krainer walls. These structures combine both engineered and biological features and that is the reason why they require stability calculation. The existing information about walls is large but not specific about this technique. I...
Thesis
Full-text available
Los pasos para peces naturalizados son estructuras de paso para la ictiofauna que imitan las condiciones de un río natural. Con el presente estudio se pretende realizar una evaluación hidráulica de estos dispositivos. Para ello, se ha recopilado información sobre las metodologías de cálculo existentes para su diseño, evaluando su grado de idoneidad...
Conference Paper
Full-text available
Nature like fish passes are an interesting alternative compared to traditional fishways, for small and medium height weirs. These structures try to imitate riffle-pool sequences in a natural river. They can be low slope "rock ramps" (<10%), placed downstream of the dam or "bypass channels", that bypass the obstacle on the riverside. In any case, bo...
Conference Paper
Full-text available
The purpose of this paper is to indicate some guidelines for log crib walls stability calculation. These bioengineering structures combine inert and life elements and must have associated stability calculation and design. We propose a method based on checking admissible strains. It considers the horizontal and vertical strengths working on the wall...

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Projects

Projects (2)
Project
FIThydro addresses the decision support in commissioning and operating hydropower plants (HPP) by use of existing and innovative technologies. It concentrates on mitigation measures and strategies to develop cost-efficient environmental solutions and on strategies to avoid individual fish damage and enhancing population developments. Therefore HPPS all over Europe are involved as test sites. The facilities for upstream and downstream migration are evaluated, different bypass systems including their use as habitats and the influence of sediment on habitat. In addition existing tools and devices will be enhanced during the project and will be used in the experimental set-ups in the laboratories and at the test sites for e.g. detection of fish or prediction of behavior. This includes sensor fish, different solutions for migration as e.g. trash rack variations, different fish tracking systems, but also numerical models as habitat and population model or virtual fish swimming path model. Therefore a three-level-based workplan was created with preparatory desk work at the beginning to analyze shortcomings and potential in environment-friendly hydropower. Following the experimental tests will be conducted at the different test sites to demonstrate and evaluate the effects of the different options not covered by the desk-work. Thirdly, these results are fed into a risk based Decision Support System (DSS) which is developed for planning, commissioning and operating of HPPs. It is meant to enable operators to fulfill the requirements of cost-effective production and at the same time meet the environmental obligations and targets under European legislation and achieve a self-sustained fish population.