Results 121 to 130 of about 246 (153)
Water quality in the Itaipu reservoir (PR)
Brazilian Journal of BiologyRinaldo Antonio Ribeiro Filho
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Diversity and ecological relationships of Cestoda and Monogenoidea parasites of freshwater stingrays (Myliobatiformes, Potamotrygonidae), in the upper Paraná River, Brazil. [PDF]
Int J Parasitol Parasites WildlChagas JMA +4 more
europepmc +1 more source
Fish diversity along spatial gradients in the Itaipu Reservoir, Paraná, Brazil [PDF]
Brazilian Journal of Biology, 2004 Local and turnover patterns of fish diversity in the Itaipu Reservoir were evaluated and related to a longitudinal or river-dam gradient (composed of riverine, transitional, and lacustrine zones) and to transversal or upstream-downstream gradients of the tributaries (composed of lotic and lentic stretches of tributaries and reservoir shores).
Oliveira, E. F. +2 more
exaly +7 more sources
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Aquatic Botany, 2005
Abstract Incidence data of two native submerged aquatic macrophytes ( Egeria najas Planch. and Egeria densa Planch.) were obtained in eight arms of a large (1350 km 2 ) subtropical reservoir (Itaipu Binacional Reservoir, Brazil-Paraguay). Environmental variables were measured simultaneously.
Sidinei M Thomaz, Luis Mauricio Bini
exaly +3 more sources
Abstract Incidence data of two native submerged aquatic macrophytes ( Egeria najas Planch. and Egeria densa Planch.) were obtained in eight arms of a large (1350 km 2 ) subtropical reservoir (Itaipu Binacional Reservoir, Brazil-Paraguay). Environmental variables were measured simultaneously.
Sidinei M Thomaz, Luis Mauricio Bini
exaly +3 more sources
Canadian Journal of Fisheries and Aquatic Sciences, 2005
Physical, chemical, and biological gradients along reservoirs are clear and exhibit marked spatial and temporal variations. These variations are rarely quantified and may produce spatial gradients in fisheries. We analyzed trends in total yield and gradients and relationships between catch-per-unit-effort (CPUE) and some characteristics of the fishery
Luiz Gomes, Angelo Antonio Agostinho
exaly +2 more sources
Physical, chemical, and biological gradients along reservoirs are clear and exhibit marked spatial and temporal variations. These variations are rarely quantified and may produce spatial gradients in fisheries. We analyzed trends in total yield and gradients and relationships between catch-per-unit-effort (CPUE) and some characteristics of the fishery
Luiz Gomes, Angelo Antonio Agostinho
exaly +2 more sources
Eutrophication Indexes Used as Fish Production Parameters in the Itaipu Reservoir (Brazil)
Journal of Environmental Protection, 2013 The knowledge of liminology can be applied in studies of trophic state indexes and morfoedaphic indexes as factors for determining the inference fish production in reservoirs. This work is based on the hypothesis of the trophic cascade relations, particularly related to bottom-up and top-down effect in Itaipu Reservoir (Brazil).
Rinaldo Antonio Ribeiro Filho +3 more
exaly +3 more sources
The genera Chara and Nitella (Chlorophyta, Characeae) in the subtropical Itaipu Reservoir, Brazil [PDF]
Revista Brasileira De Botanica, 2012 The family Characeae, represented by two genera in Brazil, Chara and Nitella, is considered to include the closest living relatives of land plants, and its members play important ecological role in aquatic ecosystems. The present taxonomic survey of Chara and Nitella was performed in tributaries that join to form the Brazilian shore of the Itaipu ...
Norma Catarina Bueno +2 more
exaly +4 more sources
Ascent of neotropical migratory fish in the Itaipu Reservoir fish pass
River Research and Applications, 2011AbstractThe Piracema Canal is a complex 10‐km fish pass system that climbs 120 m to connect the Paraná River to the Itaipu Reservoir along the Brazil–Paraguay border. The canal was constructed to allow migratory fishes to reach suitable habitats for reproduction and feeding in tributaries upstream from the reservoir.
Luiz Gomes, Makrakis S
exaly +2 more sources
Hydrobiologia, 2006
The biomass and maximum depth of colonization (Zmax) of Egeria najas Planchon (submerged), and the biomass and area covered by a stand of Eichhornia crassipes (Mart.) Solms and Salvinia herzogii Raddi (floating species) were assessed to measure the effects of a 5 m drawdown in water level of the Itaipu Reservoir (Brazil—Paraguay), which lasted about 3 ...
Pagioro T A +2 more
exaly +2 more sources
The biomass and maximum depth of colonization (Zmax) of Egeria najas Planchon (submerged), and the biomass and area covered by a stand of Eichhornia crassipes (Mart.) Solms and Salvinia herzogii Raddi (floating species) were assessed to measure the effects of a 5 m drawdown in water level of the Itaipu Reservoir (Brazil—Paraguay), which lasted about 3 ...
Pagioro T A +2 more
exaly +2 more sources