[en] Dam construction and streamflow regulation are increasing throughout the world,
with impacts in impounded aquatic ecosystems. Hydropower dams, some of them
causing a phenomenon called “hydropeaking” during their operation, are known for
having a variety of impacts on downstream aquatic biota, particularly fish, and respective
habitat. This can result in significant changes, from the community (e.g., fish
assemblage structure) to the individual level (e.g., physiological and behavioural
adjustments). Researchers and managers involved in the assessment of hydropeaking
impacts must be resourceful and use methods that allow their precise evaluation,
from large to fine-scale habitat and biological responses. In the last decades, technological
advances allowed for the development of techniques and instrumentations
that are increasingly being used in hydropeaking impact and mitigation assessments.
This paper aims to provide a review, to researchers and managers interested in this
field, of some of the most innovative methods and techniques, involving technology,
that are available to study hydropeaking effects on downstream ecosystem, particularly
from a fish perspective. We discuss the fundamentals behind such techniques,
their advantages, and disadvantages, while also providing practical examples of their
application and of the type of results that can be obtained. We finish by discussing
some of the shortcomings of these methods and how related technology can evolve
to solve current limitations.
Research center :
FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège AFFISH-RC - Applied and Fundamental FISH Research Center - ULiège
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Alexandre, Carlos M. ; MARE – Marine and Environmental Science Centre, ARNET‐Aquatic Research Network University of Évora Evora Portugal
Quintella, Bernardo R. ; MARE – Marine and Environmental Science Centre, ARNET‐Aquatic Research Network University of Évora Evora Portugal ; Department of Animal Biology Faculty of Sciences of the University of Lisbon Lisbon Portugal
Ovidio, Michaël ; Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Gestion des ressources aquatiques et aquaculture
Boavida, Isabel ; CERIS, Civil Engineering Research and Innovation for Sustainability, Instituto Superior Técnico University of Lisbon Lisbon Portugal
Costa, Maria J. ; CERIS, Civil Engineering Research and Innovation for Sustainability, Instituto Superior Técnico University of Lisbon Lisbon Portugal
Palstra, Arjan P. ; Animal Breeding and Genomics Wageningen University & Research Wageningen The Netherlands
de Lima, Rui L. Pedroso ; MARE – Marine and Environmental Sciences Centre, ARNET‐Aquatic Research Network University of Coimbra Coimbra Portugal ; Indymo: Innovative Dynamic Monitoring Delft The Netherlands
de Lima, Maria Isabel P. ; MARE – Marine and Environmental Sciences Centre, ARNET‐Aquatic Research Network University of Coimbra Coimbra Portugal ; Department of Civil Engineering, Faculty of Sciences and Technology University of Coimbra Coimbra Portugal
de Lima, João L.M.P. ; MARE – Marine and Environmental Sciences Centre, ARNET‐Aquatic Research Network University of Coimbra Coimbra Portugal ; Department of Civil Engineering, Faculty of Sciences and Technology University of Coimbra Coimbra Portugal
Almeida, Pedro R. ; MARE – Marine and Environmental Science Centre, ARNET‐Aquatic Research Network University of Évora Evora Portugal ; Department of Biology, School of Sciences and Technology University of Évora Evora Portugal
Language :
English
Title :
Technologies for the study of hydropeaking impacts on fish populations: Applications, advantages, outcomes, and future developments
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