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1. Flow characteristics in tailrace: understanding how hydrodynamics may attract fish to hydropower plant in South America

Author:
Santos, Hersília A.; Duarte, Bernardo; Pinheiro, Abgail; Cruz, Deborah; Souza, Guilherme
Source:
Marine & freshwater research 2018 v.69 no.12 pp. 1962-1973
ISSN:
1323-1650
Subject:
Pimelodus; Prochilodus; dynamic models; fish; fisheries; hydrodynamics; rivers; spillways; swimming; turbines; water power; Brazil
Abstract:
... Hydropower plant (HPP) operation may influence downstream flow regimes, which can affect the fish movement. In South America, tailrace fisheries are often killed or injured when interacting with spillways and turbines. Hydrodynamic flow-pattern studies are essential to facilitate mitigation. We developed a computational fluid dynamics model to investigate flow downstream of Três Marias HPP (Brazil ...
DOI:
10.1071/MF18135

2. Stress indicators for Prochilodus lineatus (Characiformes: Prochilodontidae) breeders during passage through a fish ladder

Author:
Bido, Adriane F.; Urbinati, Elisabeth C.; Makrakis, Maristela C.; Celestino, Leandro F.; Serra, Mônica; Makrakis, Sergio
Source:
Marine & freshwater research 2018 v.69 no.12 pp. 1814-1821
ISSN:
1323-1650
Subject:
Prochilodus lineatus; adults; body weight; cortisol; dams (hydrology); females; fish; fish ladders; glucose; hematocrit; lactic acid; males; migratory behavior; rivers; Brazil
Abstract:
... This study investigated whether fish ladder transposition is a stressful event for the streaked prochilod, Prochilodus lineatus, in a dam on the Upper Paraná River, Brazil. Bodyweight, standard length and plasma concentrations of cortisol, glucose, lactate, chloride and haematocrit were measured in 48 adult fish (male and female) that were sampled downstream and upstream of the dam and on the fish ...
DOI:
10.1071/MF18087

3. Seasonal flooding, instream habitat structure and fish assemblages in the Mulgrave River, north-east Queensland: towards a new conceptual framework for understanding fish-habitat dynamics in small tropical rivers

Author:
Rayner, Thomas S.; Pusey, Bradley J.; Pearson, Richard G.
Source:
Marine & freshwater research 2008 v.59 no.2 pp. 97-116
ISSN:
1323-1650
Subject:
Awaous; dry season; fish; floodplains; habitats; migratory behavior; models; rivers; sediments; streams; temporal variation; tropics; vegetation; wet season; Brazil; Costa Rica; Queensland
Abstract:
... Strong relationships between seasonal flooding, instream habitat structure and fish assemblages have been well documented in large tropical rivers (e.g. the flood pulse concept). However, the mechanics of these relationships are likely to differ substantially in smaller coastal rivers, such as those in Costa Rica, south-east Brazil and Australia's Wet Tropics. These systems typically feature steep ...
DOI:
10.1071/MF07129