Buscar
Mostrando ítems 1-10 de 243
Metals in superficial sediments of a cascade multisystem reservoir: contamination and potential ecological risk
(2017-11-01)
Cascade multisystem reservoirs are extremely complex ecosystems that require studies to improve understanding of their dynamics and functioning, including the effects of contamination with metals. In this work, superficial ...
Invasion of the dinoflagellate Ceratium furcoides (Levander) Langhans 1925 at tropical reservoir and its relation to environmental variables
(REVISTA BIOTA NEOTROPICACAMPINAS, 2012)
Dinoflagellates of the genus Ceratium are chiefly marine but there are rare occurrences in freshwater. In this study we analyze the invasion and progressive establishment of Ceratium furcoides, an exotic species, in the ...
Ecological carrying capacity for intensive tilapia (Oreochromis niloticus) cage aquaculture in a large hydroelectrical reservoir in Southeastern Brazil
(Elsevier B.V., 2015-05-01)
Cage culture of tilapia (Oreochromis niloticus) in large reservoirs is an emergent aquaculture practice in Brazil. Due to the availability of large amounts of suitable quality waters in hydroelectric dams, there is a large ...
Periphytic diatoms from an oligotrophic lentic system, Piraquara I reservoir, Parana state, Brazil
(Revista Biota Neotropica, 2019-01-01)
Knowledge of biodiversity in oligotrophic aquatic ecosystems is fundamental to plan conservation strategies for protected areas. This study assessed the diatom diversity from an urban reservoir with oligotrophic conditions. ...
Phytoplankton, trophic state and ecological potential in reservoirs in the State of São Paulo, BrazilFitoplâncton, estado trófico e potencial ecológico em reservatórios do estado de São Paulo, Brasil
(2019-01-01)
This study evaluated the ecological potential of reservoirs in the Brazilian state of São Paulo, having phytoplankton as a biological quality element. Integrated water column sampling was carried out in the dam, and in the ...
Ecological and toxicological responses in a multistressor scenario: are monitoring programs showing the stressors or just showing stress? A case study in Brazil
(Elsevier B. V., 2015)
The Metropolitan Region of São Paulo (MRSP) is located in the Brazilian State of São Paulo and reservoirs in this region are vital for water supply and energy production. Changes in economic, social, and demographic trends ...
Cyclopoid copepods as bioindicators of eutrophication in reservoirs: Do patterns hold for large spatial extents?
(2016-11-01)
Some species of copepods are sensitive to water quality oscillations from natural or anthropogenic causes. Information on basic ecological attributes such as abundance can be helpful in the context of hydric resources ...
Aquatic macrophytes of Itaipu Reservoir, Brazil: Survey of species and ecological considerations
(1999-12-01)
In a survey of the aquatic macrophytes of the Itaipu Reservoir, we identified 62 taxa in 25 families and 42 genera. The highest number taxa was observed for the emergent macrophytes (40 taxa). Reduced fluctuation in water ...
Phytoplankton primary productivity in an urban eutrophic reservoir (São Paulo, Brazil)
(2008-12-01)
The aim of this study was to analyze temporal ..d vertical variation of the biomass and of phytoplankton primary productivity in an urban eutrophic reservoir, in relation to the physical and chemical characteristics of the ...