Psammic cyanobacteria in marginal sediments of Rodrigo de Freitas lagoon, Rio de Janeiro State, Brazil

Detalhes bibliográficos
Autor(a) principal: Magina, Fernanda C
Data de Publicação: 2008
Outros Autores: Silva, Loreine Hermida da Silva e
Tipo de documento: Artigo
Idioma: por
Título da fonte: Anuário do Instituto de Geociências (Online)
Texto Completo: https://revistas.ufrj.br/index.php/aigeo/article/view/6777
Resumo: The Rodrigo de Freitas lagoon is a brackish aquatic body, lies within the coordinates 22º57'02"- 22º52'09" S and 43º11'09" -43º13'03" W, in the Rio de Janeiro State. The psammic cyanobacteria live in the surface of the sediment and between the clastic grains, mainly quartz. The objective of the present study was identification of the psammic cyanobacteria found in the marginal portion of the lagoon and the determination of physical -chemical parameters (dissolved oxygen, salinity, temperature of the water and sediment and pH) in the places of sampling of the psammic cianobacteria. Sampling during the year of 2007 had been carried through, in the period of ebb tide of the lagoon, where five sample stations had been established. The taxonomic analisys was made with fresh and permanent slides, through optic microscope mensuration, that allowed to observe its classic morphological characteristics. The families Chroococcaceae Nägeli 1849 and Synechococcaceae Komárek & Anagnostidis 1995 is most frequent, for 41% and 18,2% respectively of the joined species. The other observed families presented the following percentages: Phormidiaceae Anagnostidis & Komárek 1988 with 13,4%; Entophysalidaceae Geitler 1925; Schizothrichaecae Anagnostidis & Komárek 1988; Oscillatoriaceae former (Harvey) Kirchener 1898 and Nostocaceae Kutzing 1943 each one with 4,5%
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spelling Psammic cyanobacteria in marginal sediments of Rodrigo de Freitas lagoon, Rio de Janeiro State, BrazilCianobactérias psâmicas em sedimentos marginais da lagoa Rodrigo de Freitas, Estado do Rio de Janeiro, BrasilThe Rodrigo de Freitas lagoon is a brackish aquatic body, lies within the coordinates 22º57'02"- 22º52'09" S and 43º11'09" -43º13'03" W, in the Rio de Janeiro State. The psammic cyanobacteria live in the surface of the sediment and between the clastic grains, mainly quartz. The objective of the present study was identification of the psammic cyanobacteria found in the marginal portion of the lagoon and the determination of physical -chemical parameters (dissolved oxygen, salinity, temperature of the water and sediment and pH) in the places of sampling of the psammic cianobacteria. Sampling during the year of 2007 had been carried through, in the period of ebb tide of the lagoon, where five sample stations had been established. The taxonomic analisys was made with fresh and permanent slides, through optic microscope mensuration, that allowed to observe its classic morphological characteristics. The families Chroococcaceae Nägeli 1849 and Synechococcaceae Komárek & Anagnostidis 1995 is most frequent, for 41% and 18,2% respectively of the joined species. The other observed families presented the following percentages: Phormidiaceae Anagnostidis & Komárek 1988 with 13,4%; Entophysalidaceae Geitler 1925; Schizothrichaecae Anagnostidis & Komárek 1988; Oscillatoriaceae former (Harvey) Kirchener 1898 and Nostocaceae Kutzing 1943 each one with 4,5%A lagoa Rodrigo de Freitas é um corpo aquático salobro, que está localizado entre as latitudes 22º57'02" e 22º52'09"S e longitudes 43º11'09" e 43º13'03"W, no Estado do Rio de Janeiro. As cianobactérias psâmicas vivem na superfície do sedimento e entre os grãos sedimentares, principalmente entre os de quartzo. Os objetivos do presente estudo foram a identificação das cianobactérias psâmicas encontradas na porção marginal da lagoa e a determinação dos parâmetros físico-químicos (taxa de oxigênio dissolvido, salinidade, temperatura da água e sedimento, e pH) nos locais de amostragem das cianobactérias psâmicas. Foram realizadas coletas durante o ano de 2007, no período de vazante da lagoa, onde foram estabelecidas cinco estações de coleta. O processamento da análise taxonômica envolveu a confecção de lâminas frescas e permanentes, com realização de medidas em microscópio, onde foram observadas as características morfológicas clássicas. As famílias Chroococcaceae Nägeli 1849 e Synechococcaceae Komárek & Anagnostidis 1995 são as mais freqüentes respondendo por aproximadamente 41 % e 18,2% respectivamente das espécies encontradas. As demais famílias observadas apresentaram os seguintes percentuais: Phormidiaceae Anagnostidis & Komárek 1988 com 13,4%; Nostocaceae Kutzing 1943 com 9,1%; Entophysalidaceae Geitler 1925; Schizothrichaecae Anagnostidis & Komárek 1988 e Oscillatoriaceae (Harvey) Kirchener 1898 cada uma com 4,5%Universidade Federal do Rio de Janeiro2008-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://revistas.ufrj.br/index.php/aigeo/article/view/677710.11137/2008_1_43-49Anuário do Instituto de Geociências; Vol 31, No 1 (2008); 43-49Anuário do Instituto de Geociências; Vol 31, No 1 (2008); 43-491982-39080101-9759reponame:Anuário do Instituto de Geociências (Online)instname:Universidade Federal do Rio de Janeiro (UFRJ)instacron:UFRJporhttps://revistas.ufrj.br/index.php/aigeo/article/view/6777/5374Copyright (c) 2008 Anuário do Instituto de Geociênciashttp://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessMagina, Fernanda CSilva, Loreine Hermida da Silva e2017-01-23T21:48:47Zoai:www.revistas.ufrj.br:article/6777Revistahttps://revistas.ufrj.br/index.php/aigeo/indexPUBhttps://revistas.ufrj.br/index.php/aigeo/oaianuario@igeo.ufrj.br||1982-39080101-9759opendoar:2017-01-23T21:48:47Anuário do Instituto de Geociências (Online) - Universidade Federal do Rio de Janeiro (UFRJ)false
dc.title.none.fl_str_mv Psammic cyanobacteria in marginal sediments of Rodrigo de Freitas lagoon, Rio de Janeiro State, Brazil
Cianobactérias psâmicas em sedimentos marginais da lagoa Rodrigo de Freitas, Estado do Rio de Janeiro, Brasil
title Psammic cyanobacteria in marginal sediments of Rodrigo de Freitas lagoon, Rio de Janeiro State, Brazil
spellingShingle Psammic cyanobacteria in marginal sediments of Rodrigo de Freitas lagoon, Rio de Janeiro State, Brazil
Magina, Fernanda C
title_short Psammic cyanobacteria in marginal sediments of Rodrigo de Freitas lagoon, Rio de Janeiro State, Brazil
title_full Psammic cyanobacteria in marginal sediments of Rodrigo de Freitas lagoon, Rio de Janeiro State, Brazil
title_fullStr Psammic cyanobacteria in marginal sediments of Rodrigo de Freitas lagoon, Rio de Janeiro State, Brazil
title_full_unstemmed Psammic cyanobacteria in marginal sediments of Rodrigo de Freitas lagoon, Rio de Janeiro State, Brazil
title_sort Psammic cyanobacteria in marginal sediments of Rodrigo de Freitas lagoon, Rio de Janeiro State, Brazil
author Magina, Fernanda C
author_facet Magina, Fernanda C
Silva, Loreine Hermida da Silva e
author_role author
author2 Silva, Loreine Hermida da Silva e
author2_role author
dc.contributor.author.fl_str_mv Magina, Fernanda C
Silva, Loreine Hermida da Silva e
description The Rodrigo de Freitas lagoon is a brackish aquatic body, lies within the coordinates 22º57'02"- 22º52'09" S and 43º11'09" -43º13'03" W, in the Rio de Janeiro State. The psammic cyanobacteria live in the surface of the sediment and between the clastic grains, mainly quartz. The objective of the present study was identification of the psammic cyanobacteria found in the marginal portion of the lagoon and the determination of physical -chemical parameters (dissolved oxygen, salinity, temperature of the water and sediment and pH) in the places of sampling of the psammic cianobacteria. Sampling during the year of 2007 had been carried through, in the period of ebb tide of the lagoon, where five sample stations had been established. The taxonomic analisys was made with fresh and permanent slides, through optic microscope mensuration, that allowed to observe its classic morphological characteristics. The families Chroococcaceae Nägeli 1849 and Synechococcaceae Komárek & Anagnostidis 1995 is most frequent, for 41% and 18,2% respectively of the joined species. The other observed families presented the following percentages: Phormidiaceae Anagnostidis & Komárek 1988 with 13,4%; Entophysalidaceae Geitler 1925; Schizothrichaecae Anagnostidis & Komárek 1988; Oscillatoriaceae former (Harvey) Kirchener 1898 and Nostocaceae Kutzing 1943 each one with 4,5%
publishDate 2008
dc.date.none.fl_str_mv 2008-01-01
dc.type.none.fl_str_mv
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dc.identifier.uri.fl_str_mv https://revistas.ufrj.br/index.php/aigeo/article/view/6777
10.11137/2008_1_43-49
url https://revistas.ufrj.br/index.php/aigeo/article/view/6777
identifier_str_mv 10.11137/2008_1_43-49
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://revistas.ufrj.br/index.php/aigeo/article/view/6777/5374
dc.rights.driver.fl_str_mv Copyright (c) 2008 Anuário do Instituto de Geociências
http://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2008 Anuário do Instituto de Geociências
http://creativecommons.org/licenses/by/4.0
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dc.publisher.none.fl_str_mv Universidade Federal do Rio de Janeiro
publisher.none.fl_str_mv Universidade Federal do Rio de Janeiro
dc.source.none.fl_str_mv Anuário do Instituto de Geociências; Vol 31, No 1 (2008); 43-49
Anuário do Instituto de Geociências; Vol 31, No 1 (2008); 43-49
1982-3908
0101-9759
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