Cover or Velocity: What Triggers Iberian Barbel (Luciobarbus Bocagei) Refuge Selection under Experimental Hydropeaking Conditions?
| Autor: | António N. Pinheiro, Miguel Moreira, Maria João Costa, Isabel Boavida, Jorge Valbuena-Castro |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
lcsh:Hydraulic engineering cyprinids Geography Planning and Development Group behavior Ciprínidos 010501 environmental sciences Aquatic Science Fish behavior 01 natural sciences Biochemistry fish behavior lcsh:Water supply for domestic and industrial purposes lcsh:TC1-978 Iberian barbel Streamflow visual stimulus 14. Life underwater Event triggered Hydropower 0105 earth and related environmental sciences Water Science and Technology flow-refuge Hydrology lcsh:TD201-500 pulsed flows biology business.industry 010604 marine biology & hydrobiology Peces - Comportamiento Luciobarbus bocagei biology.organism_classification Flume physiology Environmental science Cyprinids business |
| Zdroj: | Water Volume 12 Issue 2 UVaDOC. Repositorio Documental de la Universidad de Valladolid instname Water, Vol 12, Iss 2, p 317 (2020) |
| ISSN: | 2073-4441 |
| DOI: | 10.3390/w12020317 |
| Popis: | Producción Científica The rapid river flow variations due to hydropower production during peak demand periods, known as hydropeaking, causes several ecological impacts. In this study, we assessed the potential of an overhead cover and velocity-refuge structure in an indoor flume as an indirect hydropeaking mitigation measure for the cyprinid species Iberian barbel (Luciobarbus bocagei). We designed a lab-scale LUNKERS-type structure using two different materials which were used separately: Wood (opaque) and acrylic (transparent), tested under hydropeaking and base-flow events. Physiological (glucose and lactate) and behavioral (structure use) responses were quantified. The structure use (inside and in the vicinity) and the individual and schooling behavior was assessed. Although there was no evidence that the hydropeaking event triggered a physiological response, the wood structure use was significantly higher than the acrylic one, where the metrics of use increased in the hydropeaking event. Differences between individual and group behavior were only higher for the entrances in the wood structure. The higher frequency of wood structure use under hydropeaking conditions suggests that the visual stimulus conferred by this shaded refuge enables fish to easily find it. The results suggest that the use of overhead and velocity-refuge structures may act as an effective hydropeaking flow-refuge mitigation measure. Fundação para a Ciência e a Tecnologia, Portugal (grant PD/BD/114336/2016) Junta de Castilla y Leon - Fondo Social Europeo (grant PIF-2017) |
| Databáze: | OpenAIRE |
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