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	Provedor de dados BJM (2) BABT (1) Autor Gonzalez,Alessandra M. (3) Paranhos,Rodolfo (3) Andrade,Luciana (2) Lutterbach,Márcia S. (1) Rezende,Carlos Eduardo (1) Suzuki,Marina (1) Valentin,Jean L. (1) Valentin,Jean Louis (1) Mais... Palavra-chave Bacterioplankton (2) Eutrophication (2) Flow cytometry (2) Water pollution (2) Activity measurement (1) Bacterial abundance (1) Estuary (1) HNA bacteria (1) Heterothrophic production (1) LNA bacteria (1) Rodrigo de Freitas Lagoon (1) Southwest Atlantic Ocean (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2007 (1) 2006 (1) 2000 (1) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Bacterial production in Guanabara Bay (Rio de Janeiro, Brazil) evaluated by ³H-leucine incorporation BABT Gonzalez,Alessandra M.; Paranhos,Rodolfo; Andrade,Luciana; Valentin,Jean L.. The aim of this work was to evaluate the necessary ³H-leucine concentration to estimate bacterial production in Guanabara Bay through saturation curves. A second aim was to collect preliminary data of bacterial production in two distinct sites corresponding to different water qualities: Urca inlet and Governador Island. Saturation curves were made with water samples taken at the main circulation channel of the bay, Paquetá Island, and the two sites mentioned before. The ³H-leucine curves showed similar pattern for all studied areas, indicating the ideal isotope concentration to be 10 nM. Bacterial biomass production ranged from 0.40 to 4.53 µgC L-1 h-1 in Urca and from 3.86 to 73.72 µgC L-1 h-1 in Governador Island indicating the relationship between... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacterioplankton; Activity measurement; Heterothrophic production; Estuary; Water pollution; Eutrophication. Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000500008 Distribution of HNA and LNA bacterial groups in the Southwest Atlantic Ocean BJM Andrade,Luciana; Gonzalez,Alessandra M.; Rezende,Carlos Eduardo; Suzuki,Marina; Valentin,Jean Louis; Paranhos,Rodolfo. Bacterioplankton was studied in a large area of Southwest Atlantic Ocean between 13 and 25ºS and 28 and 42ºW. Samples were collected in 108 stations at 20 m depth. Bacteria were enumerated by flow cytometry after nucleic acid staining with syto13 and two subgroups were differentiated: low nucleic acid content (LNA) and high nucleic acid content (HNA) bacteria. Total bacterial numbers varied from 0.37 to 5.53 10(5) cells mL-1. HNA cells represented 15 to 70% of the total number while LNA cells represented 30 to 85%. Heterotrophic bacterial production was determined by incorporation of tritiated leucine and ranged from 2.7 to 171.07 ng C L-1 h-1. No significant correlation was found between abundance and production. Nevertheless with support of multivariate... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacterial abundance; HNA bacteria; LNA bacteria; Flow cytometry; Southwest Atlantic Ocean. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000200028 Heterotrophic bacteria abundances in Rodrigo de Freitas Lagoon (Rio de Janeiro, Brazil) BJM Gonzalez,Alessandra M.; Paranhos,Rodolfo; Lutterbach,Márcia S.. The Rodrigo de Freitas Lagoon (RJ, Brazil) is an important coastal ecosystem that has been submitted to an accelerated degradation process. The aim of this work was to determine the abundance and the spatial distribution of total heterotrophic (by flow cytometry) and cultivated bacteria ("pour plate" method on R2A agar). Another objective was to evaluate the lagoon's influence on water quality of Ipanema and Leblon beaches. Physical and chemical data were acquired too. Sub-superficial water samples were taken monthly, from December 1999 to October 2000. On lagoon, the cultivated bacteria abundance varied from 6.9x10(5) to 5.0x10(7) CFU.100 mL-1. On Ipanema and Leblon beaches, this parameter yielded 1.4x10(5) and 2.8x10(6) CFU.100 mL-1, respectively. Total... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacterioplankton; Flow cytometry; Eutrophication; Water pollution; Rodrigo de Freitas Lagoon. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000400005 Registros recuperados: 3 Primeira ... 1 ... Última

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