U.S. flag

An official website of the United States government

PubAg

Main content area

Search

4  Search Results

1 - 4 of 4
Number of results to display per page

Search Results

1. Metals in fish of different trophic levels in the area of influence of the AHE Foz do Chapecó reservoir, Brazil

Author:
Campos, Sérgio Augusto Beirith; Dal-Magro, Jacir; de Souza-Franco, Gilza Maria
Source:
Environmental science and pollution research international 2018 v.25 no.26 pp. 26330-26340
ISSN:
0944-1344
Subject:
Hypostomus; Pimelodus; Salminus brasiliensis; allometry; benthic organisms; bioaccumulation; bioavailability; cadmium; chromium; condition factor; copper; fauna; fish; flora; gills; iron; lead; manganese; muscles; physiological state; rivers; trophic levels; zinc; Brazil
Abstract:
... In regions where there is intense polluting activity, a greater availability of metals in water impounded by dams increases the availability and contamination of the fauna and flora. Thus, we assessed the accumulation of metals in muscle and gills of fish of different trophic levels in the area of influence of Foz do Chapecó hydroelectric plant on the Uruguai river. We analyzed the metals Pb, Cd, ...
DOI:
10.1007/s11356-018-2522-0

2. 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

3. Passage and reproductive activity of fishes in the Igarapava fish ladder, Grande River, Southeastern Brazil

Author:
Casali, Rubens C.V.; Vono, Volney; Godinho, Hugo P.; Luz, Ronald K.; Bazzoli, Nilo
Source:
River research and applications 2010 v.26 no.2 pp. 157-165
ISSN:
1535-1459
Subject:
Pimelodus; Prochilodus lineatus; adults; dispersal behavior; fish; fish ladders; juveniles; raceways; reproductive behavior; rivers; Brazil
Abstract:
... We sampled fishes within the vertical-slot Igarapava fish ladder (IFL), Grande River, southeastern Brazil, and immediately downstream IFL in 12 field trips from February 2000 to December 2002. A total of 1145 fishes belonging to 13 families and 39 species were captured. The most abundant species captured within the IFL, in order of abundance were: Pimelodus maculatus, Metynnis maculatus, Astyanax ...
DOI:
10.1002/rra.1242

4. Influence of seasonal, diel, lunar, and other environmental factors on upstream fish passage in the Igarapava Fish Ladder, Brazil

Author:
Bizzotto, P.M.; Godinho, A.L.; Vono, V.; Kynard, B.; Godinho, H.P.
Source:
Ecology of freshwater fish 2009 v.18 no.3 pp. 461-472
ISSN:
0906-6691
Subject:
Pimelodus; Prochilodus lineatus; environmental factors; fish; fish ladders; habitats; migratory behavior; monitoring; rain; rivers; seasonal variation; water temperature; watersheds; Brazil
Abstract:
... Upstream fish passage was evaluated during 12 months in the vertical-slot Igarapava Fish Ladder constructed around Igarapava Dam, in the heavily dammed Grande River, Southeast Brazil. A video monitoring system was used to observe 61,621 fish that passed the ladder, of which 93.5% were identified to 15 taxa. Among the migratory species, the most abundant were Pimelodus maculatus (33.6% of all fish) ...
DOI:
10.1111/j.1600-0633.2009.00361.x