scholarly journals Evolução Hidrodinâmica e Processos Erosivos Marginais nos Canais do Sistema de Inundação do Alto Rio Paraná, Região Centro-Sul do Brasil

2001 ◽  
Vol 28 (2) ◽  
pp. 161
Author(s):  
PAULO CÉSAR ROCHA ◽  
EDVARD ELIAS DE SOUZA FILHO ◽  
ÉDER COMUNELLO ◽  
GERALDO TERCEIRO CORREA
Keyword(s):  
Fluvial Geomorphology ◽  
Bank Erosion ◽  
Large River ◽  
Paraná River ◽  
Alluvial Plain ◽  
Exponential Regression ◽  
Erosion Rates ◽  
Parana River ◽  
River Flood ◽  
The Right

This paper intend to contribute on understanding of small part of tropical/subtropical large river fluvial geomorphology: the high Paraná river flood system. The studied area is inserted in Baía River Compartment, characterized of large alluvial plain, in the right margin of high Paraná River, and the greater archipelagoes subdividing the channel in branches with different importance. The intensity of erosive process on the Paraná River banks were studied in four different kinds of channel by 29 points, during a hydrodynamic cycle. The obtained data was still treated with cluster analysis and the correlation through the linear and exponential regression among variables. Results evidenced that the flow velocity and mechanical composition of banks were the main variables of bank erosion rates, and that the another variables, like roots and vegetation, do not had any influence to control the bank erosion. Erosion, accretion and by pass are processes controlled by the Paraná river regime, by shifting of the talweg position and then also controlled by intensity, duration and recurrence of flood.

scholarly journals Abundance and diversity of phytoplankton in the Paraná River (Argentina) 220 km downstream of the Yacyretá reservoir

2007 ◽  
Vol 67 (1) ◽  
pp. 53-63 ◽  
Author(s):  
Y. Zalocar de Domitrovic ◽  
ASG. Poi de Neiff ◽  
SL. Casco
Keyword(s):  
High Water ◽  
Paraná River ◽  
Cylindrospermopsis Raciborskii ◽  
Left Bank ◽  
Parana River ◽  
Paraguay River ◽  
Abundance And Diversity ◽  
Chemical Conditions ◽  
The Right ◽  
Physical And Chemical

Patterns in the temporal composition, abundance and diversity of the phytoplankton community of the Paraná river prior to and after the initial filling phase of the Yacyretá reservoir are analyzed. The study site is located 220 km downstream from the Yacyretá reservoir and 30 km downstream from the confluence with the Paraguay river. Because both rivers remain separate and unmixed at the study site, we compared the possible effects of the impoundment on both river banks (left and right banks) in hydrological periods with similar duration and magnitude of the low and high water phases. Physical and chemical conditions measured on the right bank (water from the Paraguay river) were similar at both periods (pre and post-impoundment) whereas conductivity, pH and orthophosphate concentration increased on the left bank (water from the High Paraná river and Yacyretá reservoir) after the impoundment. Changes in phytoplankton density and diversity were observed only in samples collected from water flowing from the reservoir (left bank). The density of Chlorophyceae (Chloromonas acidophila, Chlamydomonas leptobasis, Choricystis minor, Chlorella vulgaris, Scenedesmus ecornis, Monoraphidium minutum, M. contortum and M. pusillum) and Cryptophyceae (Rhodomonas minuta, Cryptomonas marssonii and C. ovata) increased while Cyanophyceae (Cylindrospermopsis raciborskii, Raphidiopsis mediterranea and Planktolyngbya subtilis) and Bacillariophyceae (Aulacoseira granulata and its bioforms) decreased compared to previous studies conducted on the left bank of the Paraná river. Phytoplankton collected from the right bank of the river did not differ in pre and post- impoundment samples because they originate from the Paraguay river, which remains relatively unaffected by human activities.

scholarly journals Fishes from the Corumbá Reservoir, Paranaíba River drainage, upper Paraná River basin, state of Goiás, Brazil

Check List ◽  
2007 ◽  
Vol 3 (1) ◽  
pp. 58 ◽  
Author(s):  
Carla Simone Pavanelli ◽  
Weferson Júnio da Graça ◽  
Cláudio Henrique Zawadzki ◽  
Heraldo Antonio Britski ◽  
Ana Paula Vidotti ◽  
...  
Keyword(s):  
River Basin ◽  
Fish Species ◽  
Paraná River ◽  
Entire Period ◽  
Parana River ◽  
Influence Area ◽  
Upper Paraná River ◽  
Upper Paraná River Basin ◽  
The Right ◽  
Paraná River Basin

The Corumbá Reservoir is located in Corumbá River, a tributary to the right bank of Paranaíba River, upper Paraná River basin. Fish were collected monthly, from March 1996 to February 2000, in 17 sampling stations along Corumbá Reservoir and its influence area, using gill nets, casting nets, electrofishing and long lines. Considering the entire period, 119 fish species were colleted, which belong to seven Orders, 26 Families, and 78 Genera. Among them, five species are considered endemic to Corumbá River basin, and 17 are probably new to the science.

Dynamics of shallow lake cover types in relation to Paraná River flood pulses: assessment with multitemporal Landsat data

Hydrobiologia ◽  
2018 ◽  
Vol 833 (1) ◽  
pp. 9-24
Author(s):  
Maira Patricia Gayol ◽  
Natalia Soledad Morandeira ◽  
Patricia Kandus
Keyword(s):  
Shallow Lake ◽  
Paraná River ◽  
Landsat Data ◽  
Parana River ◽  
River Flood ◽  
Flood Pulses

scholarly journals Bidirectional exchanges of benthic invertebrates in a large river–floodplain system (Paraná River, Argentina)

2012 ◽  
Vol 48 (4) ◽  
pp. 425-436 ◽  
Author(s):  
Leticia M. Mesa ◽  
Mercedes R. Marchese ◽  
Luciana Montalto ◽  
Florencia L. Zilli
Keyword(s):  
Benthic Invertebrates ◽  
Large River ◽  
Paraná River ◽  
River Floodplain ◽  
Parana River

scholarly journals Drift of ichthyoplankton in two channels of the Paraná River, between Paraná and Mato Grosso do Sul states, Brazil

1999 ◽  
Vol 42 (1) ◽  
Author(s):  
Andréa Bialetzki ◽  
Paulo Vanderlei Sanches ◽  
Maristela Cavicchioli ◽  
Gilmar Baumgartner ◽  
Ricardo Pereira Ribeiro ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Water Temperature ◽  
Water Samples ◽  
Environmental Variables ◽  
Paraná River ◽  
Mato Grosso ◽  
Parana River ◽  
The Right ◽  
Mato Grosso Do Sul ◽  
Larvae Density

Analysis of drift of ichthyoplankton in two channels in the River Paraná, Brazil, were made. Sampling was undertaken from October 1995 to April 1996 during nychthemeral cycles. Water samples were collected to determine several environmental variables. Eggs densities largely differed to layers, times of day and months. In both the channels, highest occurrence of eggs was detected between January and March; greater concentrations at the bottom, during night. With regard to larvae, densities were significantly different in channels, times of days and months. Maximum occurrences were seen in the right channel, in both layers, with largest capture between January and March. Surface of the both channels presented highest density of larvae during night. Water temperature, electrical conductivity and flux velocity were different in the two channels, however, these variables and larvae density didn't showed correlations. This indicates that there was another possible factor, might be influencing the distribution of ichthyoplankton.

scholarly journals The High Paraná River Flood Plain

2011 ◽  
Vol 19 (1) ◽  
Author(s):  
Souza Edvard, Filho E.
Keyword(s):  
Flood Plain ◽  
Paraná River ◽  
Parana River ◽  
River Flood
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