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Dispersal of fish eggs and larvae in a cascade of small hydropower plants with fish ladders
(Springer, 2020-10-10)
This study was conducted to investigate fish eggs and larvae dispersal in a river stretch influenced by small hydropower plants in Southeast Brazil. The main hypothesis is that the downstream dispersal of free-flowing eggs ...
Assessment of a fisheries legal framework for potential development of an ecosystem approach to fisheries management in large rivers
(Wiley Blackwell Publishing, Inc, 2016-12)
Most small‐scale fisheries of large floodplain rivers are still managed under conventional top‐down regulations that limit the application of an ecosystem approach to fisheries (EAF) due to inappropriate legal frameworks. ...
Hemigrammus tridens Eigenmann (Characiformes, Characidae): First records of a small tetra from the Paraná River basin
(Museum Histoire Naturelle, 2017-03)
Hemigrammus tridens is a small characid described by Eigenmann (in Eigenmann & Ogle, 1907) from Paraguay River, in the country Paraguay. The species has a conspicuous trident-shaped caudal spot, few perforated lateral line ...
Length–weight relationships for 11 species at three small hydropower plants on the Sapucaí-Mirim River (Grande River basin, Brazil)
(2016-12-01)
This paper presents length–weight relationships (LWR) for 11 freshwater fish species from the Sapucaí-Mirim River, a tributary of the Grande River basin, São Paulo, Brazil. The specimens were captured in quarterly samplings ...
Variabilidade temporal no transporte de sedimentos no rio Ivaí - Paraná (1977-2007)
(2011-12-01)
This paper evaluates the behavior of suspended sediment load of the river Ivaí over a period of 32 years measured by the station further downstream the river (Novo Porto Taquara). The most suitable parameters for this ...
Local and regional drivers of macrophyte beta diversity in tropical coastal rivers
(2021-03-01)
Studies on beta diversity across different spatial scales can yield insight into the ecological factors that shape communities and the mechanisms of maintenance and loss of diversity. The coastal rivers in southeast Brazil ...
First record of jupiaba acanthogaster (Eigenmann, 1911) (ostariophysi, characidae) in the upper paraná river basin, Brazil
(2020-01-01)
Jupiaba Zanata, 1997 is a genus with small species within Characidae, identified by a pair of modified bones in the form of spines just anteriorly to pelvic-fin base. The genus is mostly distributed throughout the Amazon ...
A new species of the catfish genus Trichomycterus from the La Plata River basin, southern Brazil, with comments on its putative phylogenetic position (Siluriformes: Trichomycteridae)
(MAGNOLIA PRESSAUCKLAND, 2012)
The genus Trichomycterus is a highly diverse group of Neotropical catfishes that encompass almost 60% of all the currently recognized species of the Trichomycteridae. A new species of this genus, T. perkos, is herein ...
Small rivers in the southwestern Amazon and their role in CO(2) outgassing
(AMER METEOROLOGICAL SOC, 2008)
A recent estimate of CO(2) outgassing from Amazonian wetlands suggests that an order of magnitude more CO(2) leaves rivers through gas exchange with the atmosphere than is exported to the ocean as organic plus inorganic ...
Structure of the ichthyofauna of adventitious streams in the South PantanalEstrutura da ictiofauna de riachos adventícios do Pantanal Sul
(2018-06-11)
The ichthyofauna of the Taquari River, one of the main tributaries of the South Pantanal, has been studied since the 1970s; however, there is a gap on the studies about the ichthyofauna present on the small adventitious ...