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| Fusconi,Roberta; Godinho,Mirna Januária Leal. |
| The microbial populations of groundwaters were analyzed in a region under the influence of a landfill (piezometer L12) in the town of São Carlos, São Paulo, Brazil, and in an area not influenced by the landfill (piezometer L5). Heterotrophic bacteria were counted by spread plate method and the number of protozoa was estimated by the most probable number method. There was a larger number of organisms in well L12, with a mean value of 15.76 x 104 CFU/ml for bacteria and 9.7 MPN/ml for protozoa, whereas the mean values for piezometer L5 were 2.88 x 104 CFU/ml for bacteria and 3.4 MPN/ml for protozoa. The greater abundance detected in piezometer L12 may be related to the influence of the leachate through the landfill on the microbial populations, also... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacteria; Protozoa; Groundwater; Landfill. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000300003 |
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| Regali-Seleghim,Mirna Helena; Godinho,Mirna Januária Leal; Matsumura-Tundisi,Takako. |
| Listagens de espécies são importantes para o conhecimento da biota de um local, sua ecologia e para podermos dimensionar sua exploração econômica, biotecnológica e conservação. Neste trabalho foram levantados os dados de protozoários (ciliados, amebas nuas, amebas com carapaça, heliozoários e flagelados heterotróficos) de água doce do Estado de São Paulo. De 75 ambientes que foram analisados até o momento, foram registrados um total de 471 diferentes taxa de protozoários distribuídos em 218 generos e 304 espécies. Dos grupos de protozoários avaliados, os mais bem representados foram os ciliados com 160 gêneros e 219 espécies. Dentre os ciliados ocorrerem dois novos registros: Neobursaridium gigas Balech, 1941 para o Brasil e Loxodes rex Dragesco, 1970 para... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Protozoários de água doce; Biota paulista; Programa BIOTA/FAPESP. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000500014 |
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| Bagatini,Inessa Lacativa; Spínola,Ana Lúcia Gerardi; Peres,Bianca de Miranda; Mansano,Adrislaine da Silva; Rodrigues,Mafalda Alexandra Antunes; Batalha,Marco Antônio Portugal Luttembarck; Lucca,José Valdecir de; Godinho,Mirna Januária Leal; Tundisi,Takako Matsumura; Seleghim,Mirna Helena Regali. |
| Protozooplankton is an important component of the aquatic microbial food webs and its composition, density, and distribution reflect the chemical, physical, and biological aspects of the environment. Considering the scarce literature on freshwater protozoans in Brazil and on protozoan ecology in subtropical environments, we listed the ciliates and amoebae taxa found in 13 water bodies in São Paulo State and analyzed their abundance in relation to the environmental variables. We collected two samples in each environment, fixed immediately with mercuric chloride and stained with bromophenol blue. After microscopical analysis, 74 protozoan genera were identified and the Ciliophora were dominant in the majority of the environments. The Stichotrichia,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciliates; Amoebae; Plankton; Environmental variables; Freshwater. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400152 |
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| Siqueira,Adriana; Godinho,Mirna Januária Leal; Kolm,Hedda Elisabeth; Machado,Eunice da Costa. |
| The aim of this wat was to evaluate the water quality in four tidal creeks of Paraná, Brazil, with different anthropic influences. Samples were collected every three months. Temperature, salinity, pH, alkalinity, total CO2, dissolved O2, nitrite, nitrate, N-ammoniacal, phosphate, silicate, particulate suspended matter, humic matter, total chlorophyll, total and fecal coliform bacteria of surface water were measured in each sample and compared. For all the stations water temperature was lower in winter, but ranged within typically subtropical values. Salinity (7 - 25) and pH (7.08 - 7.91) were higher in Perequê tidal creek indicating that only this tidal creek was strongly influenced by the nearby ocean waters. Lower dissolved O2, reaching anoxic levels... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tidal creek; Eutrophication; Coast of Paraná. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000200028 |
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| Fusconi,Roberta; Godinho,Mirna Januária Leal; Hernández,Isara Lourdes Cruz; Bossolan,Nelma Regina Segnini. |
| A strain of Gordonia sp. (strain Lc), from landfill leachate-contaminated groundwater was characterized by polyphasic taxonomy and studied for exopolysaccharide (EPS) production. The cells were Gram-positive, catalase-positive, oxidase-negative and non-motile. The organism grew both aerobically and, in anoxic environment, in the presence of NaNO3. Rods occured singly, in pairs or in a typical coryneform V-shaped. The organism had morphological, physiological and chemical properties consistent with its assignment to the genus Gordonia and mycolic and fatty acid pattern that corresponded to those of G. polyisoprenivorans DSM 44302T. The comparison of the sequence of the first 500 bases of the 16S rDNA of strain Lc gave 100% similarity with the type strain of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gordonia polyisoprenivorans; Exopolysaccharide; Groundwater; Landfill. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000200014 |
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