Abundance of Sea Psamic Cyanobacteria from Flexeiras Beach, Rio de Janeiro State, Southeastern Brazil
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , , , |
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/6815 |
Resumo: | Flexeiras beach (22º56' S, 43º53'W) is located at Ilha de Itacuruçá (Itacuruçá Island) in Sepetiba Bay, on the southern coast of Rio de Janeiro State. It is a protected beach in relation to wave exposition, due to its geographic position, which faces the opening Bay. This work aims at contributing with the knowledge of abundance of psamic cyanobacteria species, which compound Brazilian sea-communities. It had occurred monthly collections, from December 2006 to January 2008, during syzygy's low tide. Samples were obtained through PVC pipes, measuring 1,5 cm of internal diameter and 6 cm length. They were also fractionated into 3 segments, 2 cm distant. After that, samples had been places in opaque plastic flasks referring to each segment and preserved in a 4% formol aqueous solution. Flexeiras beach has sediments made by sand, presenting grain size varying from 0,22 to 0,32 mm (fine sand). Estimated average declivity was of 1/21,4m (À 4,07) and 1/28,7m (À 15,8), respectively, for two transects. The water chlorophyll concentration in interdital areas presented an average of 3,03 g/L (À2,29) and total Phosphorus presented an average of 0,12 mg/L (À 0,04). Average salinity was of 35%, don't having considerable oscillations during the months studied. The qualitative analysis has detected the presence of 12 psamic cyanobacteria tax. Family Chroococcaceae Nägeli 1849 is the most frequent, responsible for 33,4% of encountered species. The geological importance of psamic cyanobacteria is intrinsically associated to the fact of them composing the first unconsolidated substract for microbial mats' formation, essential structures in this group preservation. |
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Abundance of Sea Psamic Cyanobacteria from Flexeiras Beach, Rio de Janeiro State, Southeastern BrazilCianobactérias Psâmicas Marinhas da Praia das Flexeiras, Estado do Rio de Janeiro, Sudeste do BrasilFlexeiras beach (22º56' S, 43º53'W) is located at Ilha de Itacuruçá (Itacuruçá Island) in Sepetiba Bay, on the southern coast of Rio de Janeiro State. It is a protected beach in relation to wave exposition, due to its geographic position, which faces the opening Bay. This work aims at contributing with the knowledge of abundance of psamic cyanobacteria species, which compound Brazilian sea-communities. It had occurred monthly collections, from December 2006 to January 2008, during syzygy's low tide. Samples were obtained through PVC pipes, measuring 1,5 cm of internal diameter and 6 cm length. They were also fractionated into 3 segments, 2 cm distant. After that, samples had been places in opaque plastic flasks referring to each segment and preserved in a 4% formol aqueous solution. Flexeiras beach has sediments made by sand, presenting grain size varying from 0,22 to 0,32 mm (fine sand). Estimated average declivity was of 1/21,4m (À 4,07) and 1/28,7m (À 15,8), respectively, for two transects. The water chlorophyll concentration in interdital areas presented an average of 3,03 g/L (À2,29) and total Phosphorus presented an average of 0,12 mg/L (À 0,04). Average salinity was of 35%, don't having considerable oscillations during the months studied. The qualitative analysis has detected the presence of 12 psamic cyanobacteria tax. Family Chroococcaceae Nägeli 1849 is the most frequent, responsible for 33,4% of encountered species. The geological importance of psamic cyanobacteria is intrinsically associated to the fact of them composing the first unconsolidated substract for microbial mats' formation, essential structures in this group preservation.A Praia das Flexeiras (22º56' S e 43º53' W) está localizada na Ilha de Itacuruçá na Baía de Sepetiba, no litoral sul do estado do Rio de Janeiro. É uma praia protegida em relação à exposição de ondas, devido a sua posição geográfica perante a saída da baía. Este trabalho visa contribuir com o conhecimento da riqueza de espécies de cianobactérias psâmicas, que compõem as comunidades marinhas brasileiras. Foram realizadas coletas mensais, no período de dezembro de 2006 a janeiro de 2008, durante a maré baixa de sizígia. As amostras foram retiradas através de tubos de PVC, com diâmetro interno de 1,5 cm e comprimento de 6 cm, e fracionadas em três segmentos distando 2 cm. Posteriormente, foram colocadas em frascos plásticos opacos referentes a cada segmento e conservadas em solução aquosa de formol a 4%. A praia das Flexeiras possui sedimento constituído por areia, apresentando tamanho de grão variando de 0,20 - 0,32 mm (areia fina). A declividade média estimada foi de 1/21,4 m (À4,07) e 1/28,7 m (À15,8), respectivamente. A concentração de clorofila da água na região entremarés apresentou uma média de 3,03 μg/L (À2,29) e o fósforo total apresentou média de 0,12 mg/L (À0,04). A salinidade média foi de 35%. A análise qualitativa demonstrou a presença de 12 taxa de cianobactérias psâmicas. A família Chroococcaceae Nägeli 1849 é a mais frequente, respondendo por 33,4% das espécies encontradas. A importância geológica das cianobactérias psâmicas está associada ao fato de comporem o primeiro substrato inconsolidado para a formação das esteiras microbianas, estruturas primordiais na conservação desse grupo.Universidade Federal do Rio de Janeiro2011-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://revistas.ufrj.br/index.php/aigeo/article/view/681510.11137/2011_1_46-51Anuário do Instituto de Geociências; Vol 34, No 1 (2011); 46-51Anuário do Instituto de Geociências; Vol 34, No 1 (2011); 46-511982-39080101-9759reponame:Anuário do Instituto de Geociências (Online)instname:Universidade Federal do Rio de Janeiro (UFRJ)instacron:UFRJporhttps://revistas.ufrj.br/index.php/aigeo/article/view/6815/5412Copyright (c) 2011 Anuário do Instituto de Geociênciashttp://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessSilva, Loreine Hermida da Silva eAlves, Siglia Andressa Pinto Monteiro do NascimentoMagina, Fernanda CampanteGomes, Sinda Beatriz Vianna CarvalhalCardoso, Ricardo da SilvaCaetano, Carlos Henrique SoaresGuarino, Alcides Wagner Serpa2017-01-23T21:52:11Zoai:www.revistas.ufrj.br:article/6815Revistahttps://revistas.ufrj.br/index.php/aigeo/indexPUBhttps://revistas.ufrj.br/index.php/aigeo/oaianuario@igeo.ufrj.br||1982-39080101-9759opendoar:2017-01-23T21:52:11Anuário do Instituto de Geociências (Online) - Universidade Federal do Rio de Janeiro (UFRJ)false |
dc.title.none.fl_str_mv |
Abundance of Sea Psamic Cyanobacteria from Flexeiras Beach, Rio de Janeiro State, Southeastern Brazil Cianobactérias Psâmicas Marinhas da Praia das Flexeiras, Estado do Rio de Janeiro, Sudeste do Brasil |
title |
Abundance of Sea Psamic Cyanobacteria from Flexeiras Beach, Rio de Janeiro State, Southeastern Brazil |
spellingShingle |
Abundance of Sea Psamic Cyanobacteria from Flexeiras Beach, Rio de Janeiro State, Southeastern Brazil Silva, Loreine Hermida da Silva e |
title_short |
Abundance of Sea Psamic Cyanobacteria from Flexeiras Beach, Rio de Janeiro State, Southeastern Brazil |
title_full |
Abundance of Sea Psamic Cyanobacteria from Flexeiras Beach, Rio de Janeiro State, Southeastern Brazil |
title_fullStr |
Abundance of Sea Psamic Cyanobacteria from Flexeiras Beach, Rio de Janeiro State, Southeastern Brazil |
title_full_unstemmed |
Abundance of Sea Psamic Cyanobacteria from Flexeiras Beach, Rio de Janeiro State, Southeastern Brazil |
title_sort |
Abundance of Sea Psamic Cyanobacteria from Flexeiras Beach, Rio de Janeiro State, Southeastern Brazil |
author |
Silva, Loreine Hermida da Silva e |
author_facet |
Silva, Loreine Hermida da Silva e Alves, Siglia Andressa Pinto Monteiro do Nascimento Magina, Fernanda Campante Gomes, Sinda Beatriz Vianna Carvalhal Cardoso, Ricardo da Silva Caetano, Carlos Henrique Soares Guarino, Alcides Wagner Serpa |
author_role |
author |
author2 |
Alves, Siglia Andressa Pinto Monteiro do Nascimento Magina, Fernanda Campante Gomes, Sinda Beatriz Vianna Carvalhal Cardoso, Ricardo da Silva Caetano, Carlos Henrique Soares Guarino, Alcides Wagner Serpa |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Silva, Loreine Hermida da Silva e Alves, Siglia Andressa Pinto Monteiro do Nascimento Magina, Fernanda Campante Gomes, Sinda Beatriz Vianna Carvalhal Cardoso, Ricardo da Silva Caetano, Carlos Henrique Soares Guarino, Alcides Wagner Serpa |
description |
Flexeiras beach (22º56' S, 43º53'W) is located at Ilha de Itacuruçá (Itacuruçá Island) in Sepetiba Bay, on the southern coast of Rio de Janeiro State. It is a protected beach in relation to wave exposition, due to its geographic position, which faces the opening Bay. This work aims at contributing with the knowledge of abundance of psamic cyanobacteria species, which compound Brazilian sea-communities. It had occurred monthly collections, from December 2006 to January 2008, during syzygy's low tide. Samples were obtained through PVC pipes, measuring 1,5 cm of internal diameter and 6 cm length. They were also fractionated into 3 segments, 2 cm distant. After that, samples had been places in opaque plastic flasks referring to each segment and preserved in a 4% formol aqueous solution. Flexeiras beach has sediments made by sand, presenting grain size varying from 0,22 to 0,32 mm (fine sand). Estimated average declivity was of 1/21,4m (À 4,07) and 1/28,7m (À 15,8), respectively, for two transects. The water chlorophyll concentration in interdital areas presented an average of 3,03 g/L (À2,29) and total Phosphorus presented an average of 0,12 mg/L (À 0,04). Average salinity was of 35%, don't having considerable oscillations during the months studied. The qualitative analysis has detected the presence of 12 psamic cyanobacteria tax. Family Chroococcaceae Nägeli 1849 is the most frequent, responsible for 33,4% of encountered species. The geological importance of psamic cyanobacteria is intrinsically associated to the fact of them composing the first unconsolidated substract for microbial mats' formation, essential structures in this group preservation. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-01-01 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://revistas.ufrj.br/index.php/aigeo/article/view/6815 10.11137/2011_1_46-51 |
url |
https://revistas.ufrj.br/index.php/aigeo/article/view/6815 |
identifier_str_mv |
10.11137/2011_1_46-51 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://revistas.ufrj.br/index.php/aigeo/article/view/6815/5412 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2011 Anuário do Instituto de Geociências http://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2011 Anuário do Instituto de Geociências http://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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 34, No 1 (2011); 46-51 Anuário do Instituto de Geociências; Vol 34, No 1 (2011); 46-51 1982-3908 0101-9759 reponame:Anuário do Instituto de Geociências (Online) instname:Universidade Federal do Rio de Janeiro (UFRJ) instacron:UFRJ |
instname_str |
Universidade Federal do Rio de Janeiro (UFRJ) |
instacron_str |
UFRJ |
institution |
UFRJ |
reponame_str |
Anuário do Instituto de Geociências (Online) |
collection |
Anuário do Instituto de Geociências (Online) |
repository.name.fl_str_mv |
Anuário do Instituto de Geociências (Online) - Universidade Federal do Rio de Janeiro (UFRJ) |
repository.mail.fl_str_mv |
anuario@igeo.ufrj.br|| |
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1797053541352734720 |