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	Provedor de dados Rev. Bras. Bot. (2) Acta Botanica (1) Braz. J. Plant Physiol. (1) Autor Giani,Alessandra (4) Figueredo,Cleber Cunha (2) Eterovick,Paula Cabral (1) Lemos Filho,José Pires (1) Rückert,Gabriela Von (1) Rückert,Gabriela von (1) Mais... Palavra-chave Phytoplankton (2) Ammonium (1) Chlorophyta (1) Chlorophytes photosynthesis (1) Cyanobacteria (1) Cylindrospermopsis raciborskii (1) Electron Transport Rate (1) Eutrophic reservoir (1) Eutrophication (1) Growth (1) Invasive species (1) Lake conservation (1) Nitrate (1) Protein concentration (1) Taxonomy (1) Water deterioration (1) Mais... Tipo do documento Info:eu-repo/semantics/article (4) Ano 2016 (1) 2009 (1) 2004 (1) 1997 (1) País Brazil (4) Idioma Inglês (3) Português (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última The necessity of management in a lake of the Atlantic Forest biodiversity hotspot: nitrogen levels connected to a persistent bloom of Cylindrospermopsis raciborskii Acta Botanica Figueredo,Cleber Cunha; Rückert,Gabriela von; Giani,Alessandra. ABSTRACT Conservational studies of the threatened Atlantic Forest biome are frequently restricted to terrestrial ecosystems. We know little about the water bodies, specially considering that this biome covers the third largest system of lakes in Brazil. Some of these lakes are located inside the protected "Rio Doce State Park", but many others are found outside this reserve. These external lakes are seldom studied, but understanding their response to human activities is essential for the conservation and the protection of the lakes inside the Park. We evaluated the effects of degradation in a lake outside the Park, which shows a constant bloom of the toxic invasive cyanobacteria Cylindrospermopsis raciborskii. Phytoplankton, climate and physico-chemical... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cylindrospermopsis raciborskii; Invasive species; Lake conservation; Phytoplankton; Water deterioration. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000200222 Photosynthetic capacity of three phytoplanktonic species measured by a pulse amplitude fluorometric method Braz. J. Plant Physiol. Figueredo,Cleber Cunha; Giani,Alessandra; Lemos Filho,José Pires. During photosynthesis, absorbed energy that is not used in photochemical reactions dissipates as fluorescence. Fluorescence provides important information on the physiological conditions of the studied organisms and its measurement is widely used by plant physiologists and can be valuable in phytoplankton studies. We describe a method adapting a plant fluorometric equipment to measure the photosynthetic capacity of microalgae. Unialgal cultures of three planktonic chlorophytes were exposed to 3(3,4-dichlorophenyl)-1,1-dimethylurea (DCMU), an inhibitor of photosystem II, at concentrations of 0.1, 1.0 and 10.0 µmol.L-1. Estimates were made of photosynthetic parameters, including operational and potential photosystem II quantum yield and electron transport... Tipo: Info:eu-repo/semantics/article Palavras-chave: Chlorophytes photosynthesis; Electron Transport Rate; Phytoplankton. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202009000300001 Levantamento taxonômico das Chlorophyta (Volvocales, Chlorococcales, Zygnematales) do reservatório da Pampulha, MG Rev. Bras. Bot. Eterovick,Paula Cabral; Giani,Alessandra. RESUMO - (Levantamento taxonômico das Chlorophyta (Volvocales, Chlorococcales, Zygnematales) do Reservatório da Pampulha, MG). Foi realizado um levantamento taxonômico das Chlorophyta planctônicas (Volvocales, Chlorococcales, Zygnematales) no Reservatório da Pampulha (Minas Gerais, Brasil). As amostras foram coletadas mensalmente, de maio de 1992 a agosto de 1994. Foram encontradas 36 espécies pertencentes às ordens Chlorococcales, Volvocales e Zygnematales. A ordem Chlorococcales foi a que apresentou maior número de espécies (27 espécies distribuídas em nove famílias), seguida de Zygnematales (oito espécies em uma família) e de Volvocales (uma espécie). A maioria destas espécies (70%) é citada pela primeira vez para o estado de Minas Gerais. Tipo: Info:eu-repo/semantics/article Palavras-chave: Taxonomy; Eutrophic reservoir; Chlorophyta. Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041997000100008 Effect of nitrate and ammonium on the growth and protein concentration of Microcystis viridis Lemmermann (Cyanobacteria) Rev. Bras. Bot. Rückert,Gabriela Von; Giani,Alessandra. Cyanobacteria are a very important group in aquatic systems, particularly in eutrophic waters. Therefore studies about their success in the environment are essential. Many hypotheses have tried to explain the dominance of Cyanobacteria, and several emphasized the importance of various nitrogen sources for the success of the group. In this study, we measured the effect of ammonium and nitrate on the growth and protein concentration of Microcystis viridis (Cyanobacteria). This species is well-known because bloom formation in eutrophic waters. The study was carried out, in experimental batch cultures, using the WC medium with different nitrogen sources: ammonium, nitrate, ammonium + nitrate (50% ammonium + 50% nitrate) and ammonium at different concentrations... Tipo: Info:eu-repo/semantics/article Palavras-chave: Ammonium; Cyanobacteria; Eutrophication; Growth; Nitrate; Protein concentration. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042004000200011 Registros recuperados: 4 Primeira ... 1 ... Última

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