Search Results - "Vieira, Armando A. H."

Glucose uptake and extracellular polysaccharides (EPS) produced by bacterioplankton from an eutrophic tropical reservoir (Barra Bonita, SP-Brazil) by Panhota, Rafael S, Bianchini, Irineu Jr, Vieira, Armando A. H

“…We have studied the production of polysaccharides by bacterioplankton in an eutrophic tropical reservoir (Barra Bonita, SP-Brazil) through a decay experiment…”
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Effects of cyanobacterium exopolysaccharides on life-history of Ceriodaphnia cornuta SARS by Choueri, Rodrigo B., Melão, Maria Da Graça G., Lombardi, Ana T., Vieira, Armando A. H.

“…The objective of the present investigation was to verify if Anabaena spiroides exopolysaccharides sustains growth and reproduction of Ceriodaphnia cornuta. The…”
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The effects of Anabaena spiroides (Cyanophyceae) exopolysaccharide on copper toxicity to Simocephalus serrulatus (Cladocera, Daphnidae) by NOGUEIRA, PATRÍCIA F. M., MELÃO, MARIA DA G. G., LOMBARDI, ANA T., VIEIRA, ARMANDO A. H.

“…Summary 1. This work investigated the consumption of a microalgal (Anabaena spiroides) exopolysaccharide by the cladoceran Simocephalus serrulatus (Cladocera,…”
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The effects of solar irradiation on copper speciation and organic complexation by Tonietto, Alessandra E, Lombardi, Ana Teresa, Vieira, Armando A. H

“…The aims of this research were to evaluate the effects of solar irradiation on copper speciation in water samples obtained in eutrophic and metal contaminated…”
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Comparison of two DNA extraction methods widely used in aquatic microbial ecology by Mateus-Barros, Erick, Meneghine, Aylan K., Bagatini, Inessa Lacativa, Fernandes, Camila C., Kishi, Luciano T., Vieira, Armando A.H., Sarmento, Hugo

“…In recent years, the rapid advances of culture-independent methods and new molecular tools have revolutionized our understanding of microbial biodiversity and…”
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Characterization and photodegradation of dissolved organic matter (DOM) from a tropical lake and its dominant primary producer, the cyanobacteria Microcystis aeruginosa by Bittar, Thais B., Stubbins, Aron, Vieira, Armando A.H., Mopper, Kenneth

“…This study investigates optical and high-resolution molecular signatures and photochemical degradation of DOM from the Barra Bonita Reservoir (BB-DOM), a…”
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A Highly Accurate Level Set Approach for Segmenting Green Microalgae Images by Borges, Vinicius R. Pereira, Hamann, Bernd, Silva, Thais G., Vieira, Armando A.H., Oliveira, Maria Cristina F.

“…We present a method for segmenting 2D microscopy images of freshwater green microalgae. Our approach is based on a specialized level set method, leading to…”
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Competition between photochemical and biological degradation of dissolved organic matter from the cyanobacteria Microcystis aeruginosa by Bittar, Thais B., Vieira, Armando A. H., Stubbins, Aron, Mopper, Kenneth

“…Extracellular and intracellular dissolved organic matter (E-DOM and I-DOM, respectively) produced in axenic cultures by the cosmopolitan cyanobacteria…”
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Microbial degradation of extracellular polysaccharides released by a tropical strain of Staurastrum orbiculare (Zygnematophyceae) by Giroldo, Danilo, Vieira, Armando A. H., Paulsen, Berit S.

“…D. Giroldo, A.A.H. Vieira and B.S. Paulsen. 2005. Microbial degradation of extracellular polysaccharides released by a tropical strain of Staurastrum…”
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MALDI-TOF MS based discrimination of coccoid green microalgae (Selenastraceae, Chlorophyta) by Mello, Rodrigo V., Meccheri, Fabrício S., Bagatini, Inessa L., Rodrigues-Filho, Edson, Vieira, Armando A.H.

“…The morphological simplicity of the cells in the family Selenastraceae has been a barrier to a good establishment of well-defined taxonomic groups, and…”
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Bacteria-algae association in batch cultures of phytoplankton from a tropical reservoir: the significance of algal carbohydrates by GIROLDO, DANILO, ORTOLANO, PEDRO I.C, VIEIRA, ARMANDO A.H

“…1. The dissolved organic matter, especially carbohydrates, released by phytoplanktonic organisms may be ecologically important, through its influence on carbon…”
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Phytoplankton relationship with bacterioplankton, dissolved carbohydrates and water characteristics in a subtropical coastal lagoon by Guimarães, Pablo S., Zigiotto, Layanna, Garcia, Marinês, Dellamano-Oliveira, Maria J., Vieira, Armando A.E., Giroldo, Danilo

“…Release of carbohydrates by phytoplankton enhances microbial diversity, promoting associations between algae and heterotrophic organisms. Thus, this work aimed…”
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An extracellular sulfated fucose-rich polysaccharide produced by a tropical strain of Cryptomonas obovata (Cryptophyceae) by GIROLDO, Danilo, VIEIRA, Armando A. H

“…A tropical strain of Cryptomonas obovata Skuja, isolated from a shallow oxbow lake, released a sulfated fucose-rich polysaccharide. The polysaccharide is…”
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MUCILAGINOUS CAPSULE ADSORPTION AND INTRACELLULAR UPTAKE OF COPPER BY KIRCHNERIELLA APERTA (CHLOROCOCCALES)1 by Lombardi, Ana T., Vieira, Armando A. H., Sartori, Luiz A.

“…The purpose of the present investigation was to evaluate possible ecological and physiological functions of mucilaginous capsules produced by the freshwater…”
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Activity of glycosidases from freshwater heterotrophic microorganisms on the degradation of extracellular polysaccharide produced by Anabaena spiroides (Cyanobacteria) by Colombo, Vanessa(Universidade Federal de São Carlos Departamento de Botânica), Vieira, Armando A.H.(Universidade Federal de São Carlos Departamento de Botânica), Moraes, Gilberto(Universidade Federal de São Carlos Departamento de Genética e Evolução)

“…The activity of specific glycosidases during the degradation of the extracellular polysaccharide (EPS) produced by Anabaena spiroides was determined using…”
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EXTRACELLULAR POLYSACCHARIDES FROM ANKISTRODESMUS DENSUS (CHLOROPHYCEAE) by Paulsen, Berit Smestad, Aslaksen, Torun, Freire-Nordi, Cristina S., Vieira, Armando A. H.

“…The dissolved extracellular compounds produced by the Chlorococcalean Ankistrodesmus densus Kors. were investigated for their molecular masses and chemical…”
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SELECTIVE PERMEABILITY OF THE EXTRACELLULAR ENVELOPE OF THE MICROALGA SPONDYLOSIUM PANDURIFORME (CHLOROPHYCEAE) AS REVEALED BY ELECTRON PARAMAGNETIC RESONANCE by Freire-Nordi, Cristina S., Vieira, Armando A. H., Nascimento, Otaciro R.

“…The aim of this work was to investigate the role of the polysaccharide sheath of the microalga Spondylosium panduriforme (Chlorophyceae, Desmidiaceae) in the…”
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Métodos de cultura de algas do plancton marinho: estudos realizados nas regiões de Cananéia e de Ubatuba, SP Culture methods of planktonic marine alrae: studies in Cananéia and Ubatuba regions by Armando A. H Vieira

“…The study of algae culture collected in Brazilian waters was proposed due to the lack of literature on the subject: an attempt was made to develop a…”
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Alguns aspectos metodológicos da medida da excreção de matéria orgânica pelo fitoplâncton por espectrometria de cintilação líquida Some aspects of liquid scintillation spectrometric procedures to measure dissolved organic matter released by phytoplankton by Armando A. H Vieira, Elizabeth Aidar-Aragão

“…Some aspects of the procedures to measure dissolved organic matter (DOM) released by phytoplankton account for important sources of errors. These aspects…”
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