Biopolymers, Total Organic Carbon and Sulphur Relationed to Bacterial Activity on Superficial Sediment of Paraíba do Sul Fan, RJ-Brazil

Detalhes bibliográficos
Autor(a) principal: Silva, Frederico Sobrinho da
Data de Publicação: 2011
Outros Autores: Laut, Lazaro Luiz Mattos, Santos, Elisamara Sabadini, Laut, Vanessa Mattos, Crapez, Mirian Araújo Carlos, Mendonça Filho, João Graciano
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/6814
Resumo: The Paraíba do Sul River basin is located on the Rio de Janeiro-São Paulo axis, an area of great demographic density and intense industrialization. This work aimed to perform a quali-quantitative analysis of the organic matter (biopolymers, total organic carbon and sulfur) and the bacterial metabolic state in the estuarine-deltaic superficial sediments of the Paraíba do Sul River, relating them to their granulometric distribution. On average, 65.5% of sediments were classified as sandy and poor in carbon and sulfur, with average concentrations of 0.71% and 0.04%, respectively. The C:S element ratio indicates that the environment is predominantly oxidizing, which is coherent with the strong fluvial influence of such a middle-sized river over the estuary. The carbohydrate (average of 2075.93 μg C/g), protein (average of 25.70 μg C/g) and lipid (average of 363.10 μg C/g) biopolymers also presented concentrations lower than those found in other environments. Based on these low concentrations, the environment was classified as meso-oligotrophic. The CARBOHYDRATE:TOC ratio evidenced the impact from anthropic activities, more specifically from the input of domestic effluents along the entire river's course and from the sugar industry, strongly present on its lower course. The bacterial community responsible for organic matter hydrolysis is predominantly anaerobic and facultatively anaerobic, implying in loss of nitrogen to the atmosphere (denitrification) and production of sulfides (sulfate reduction), and the low PROTEIN:CARBOHYDRATE ratios reflect this loss of nitrogen (present in the protein compounds), considering the occurrence of denitrifying bacteria. The bacterial carbon values found are high (3.29 μg C/g) and they are also probably due to the impacts above described
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spelling Biopolymers, Total Organic Carbon and Sulphur Relationed to Bacterial Activity on Superficial Sediment of Paraíba do Sul Fan, RJ-BrazilBiopolímeros, Carbono e Enxofre Totais Associados à Atividade Bacteriana dos Sedimentos Superficiais do Delta do Paraíba do Sul, RJ-BrasilThe Paraíba do Sul River basin is located on the Rio de Janeiro-São Paulo axis, an area of great demographic density and intense industrialization. This work aimed to perform a quali-quantitative analysis of the organic matter (biopolymers, total organic carbon and sulfur) and the bacterial metabolic state in the estuarine-deltaic superficial sediments of the Paraíba do Sul River, relating them to their granulometric distribution. On average, 65.5% of sediments were classified as sandy and poor in carbon and sulfur, with average concentrations of 0.71% and 0.04%, respectively. The C:S element ratio indicates that the environment is predominantly oxidizing, which is coherent with the strong fluvial influence of such a middle-sized river over the estuary. The carbohydrate (average of 2075.93 μg C/g), protein (average of 25.70 μg C/g) and lipid (average of 363.10 μg C/g) biopolymers also presented concentrations lower than those found in other environments. Based on these low concentrations, the environment was classified as meso-oligotrophic. The CARBOHYDRATE:TOC ratio evidenced the impact from anthropic activities, more specifically from the input of domestic effluents along the entire river's course and from the sugar industry, strongly present on its lower course. The bacterial community responsible for organic matter hydrolysis is predominantly anaerobic and facultatively anaerobic, implying in loss of nitrogen to the atmosphere (denitrification) and production of sulfides (sulfate reduction), and the low PROTEIN:CARBOHYDRATE ratios reflect this loss of nitrogen (present in the protein compounds), considering the occurrence of denitrifying bacteria. The bacterial carbon values found are high (3.29 μg C/g) and they are also probably due to the impacts above describedA bacia de drenagem do Rio Paraíba do Sul localiza-se ao longo do eixo Rio de Janeiro-São Paulo, de grande densidade demográfica e intensa industrialização. Este trabalho objetivou analisar quali-quantitativamente a matéria orgânica (biopolímeros, carbono orgânico total e enxofre) e o estado metabólico bacteriano nos sedimentos superficiais estuarino-deltaicos do Rio Paraíba do Sul, relacionando-os a distribuição granulométrica. Em média, 65,5% dos sedimentos foi classificado como arenoso e empobrecidos em carbono e enxofre, cujas concentrações médias foram 0,71% e 0,04%, respectivamente. A razão elementar C:S indica que o ambiente é predominantemente oxidante, coerente com a forte influência fluvial no estuário desse rio de médio porte. Os biopolímeros carboidratos (média de 2075,93 μg C/g), proteínas (média de 25,70 μg C/g) e lipídeos (média de 363,10 μg C/g) também apresentaram concentrações inferiores a outros ambientes. Em função dessas baixas concentrações, pôde-se classificar o ambiente como sendo meso-oligotrófico. A razão CARBOIDRATO:COT identificou o impacto de atividades antrópicas, mais especificamente o aporte de efluentes domésticos ao longo de todo o seu curso e da indústria açucareira fortemente presente no seu baixo curso. A comunidade bacteriana, responsável pela hidrólise da matéria orgânica, é predominantemente anaeróbia e anaeróbia facultativa, implicando em perda de nitrogênio para a atmosfera (desnitrificação) e produção de sulfetos (sulfato-redução) e os baixos valores da razão PROTEINA:CARBOIDRATO refletem essa perda de nitrogênio (presente nos compostos protéicos) considerando a ocorrência de bactérias desnitrificantes. Os valores encontrados de carbono bacteriano são elevados (3,29 μg C/g) que também, provavelmente, são devidos aos impactos descritos.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/681410.11137/2011_1_33-45Anuário do Instituto de Geociências; Vol 34, No 1 (2011); 33-45Anuário do Instituto de Geociências; Vol 34, No 1 (2011); 33-451982-39080101-9759reponame:Anuário do Instituto de Geociências (Online)instname:Universidade Federal do Rio de Janeiro (UFRJ)instacron:UFRJporhttps://revistas.ufrj.br/index.php/aigeo/article/view/6814/5411Copyright (c) 2011 Anuário do Instituto de Geociênciashttp://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessSilva, Frederico Sobrinho daLaut, Lazaro Luiz MattosSantos, Elisamara SabadiniLaut, Vanessa MattosCrapez, Mirian Araújo CarlosMendonça Filho, João Graciano2017-01-23T21:52:11Zoai:www.revistas.ufrj.br:article/6814Revistahttps://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 Biopolymers, Total Organic Carbon and Sulphur Relationed to Bacterial Activity on Superficial Sediment of Paraíba do Sul Fan, RJ-Brazil
Biopolímeros, Carbono e Enxofre Totais Associados à Atividade Bacteriana dos Sedimentos Superficiais do Delta do Paraíba do Sul, RJ-Brasil
title Biopolymers, Total Organic Carbon and Sulphur Relationed to Bacterial Activity on Superficial Sediment of Paraíba do Sul Fan, RJ-Brazil
spellingShingle Biopolymers, Total Organic Carbon and Sulphur Relationed to Bacterial Activity on Superficial Sediment of Paraíba do Sul Fan, RJ-Brazil
Silva, Frederico Sobrinho da
title_short Biopolymers, Total Organic Carbon and Sulphur Relationed to Bacterial Activity on Superficial Sediment of Paraíba do Sul Fan, RJ-Brazil
title_full Biopolymers, Total Organic Carbon and Sulphur Relationed to Bacterial Activity on Superficial Sediment of Paraíba do Sul Fan, RJ-Brazil
title_fullStr Biopolymers, Total Organic Carbon and Sulphur Relationed to Bacterial Activity on Superficial Sediment of Paraíba do Sul Fan, RJ-Brazil
title_full_unstemmed Biopolymers, Total Organic Carbon and Sulphur Relationed to Bacterial Activity on Superficial Sediment of Paraíba do Sul Fan, RJ-Brazil
title_sort Biopolymers, Total Organic Carbon and Sulphur Relationed to Bacterial Activity on Superficial Sediment of Paraíba do Sul Fan, RJ-Brazil
author Silva, Frederico Sobrinho da
author_facet Silva, Frederico Sobrinho da
Laut, Lazaro Luiz Mattos
Santos, Elisamara Sabadini
Laut, Vanessa Mattos
Crapez, Mirian Araújo Carlos
Mendonça Filho, João Graciano
author_role author
author2 Laut, Lazaro Luiz Mattos
Santos, Elisamara Sabadini
Laut, Vanessa Mattos
Crapez, Mirian Araújo Carlos
Mendonça Filho, João Graciano
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Silva, Frederico Sobrinho da
Laut, Lazaro Luiz Mattos
Santos, Elisamara Sabadini
Laut, Vanessa Mattos
Crapez, Mirian Araújo Carlos
Mendonça Filho, João Graciano
description The Paraíba do Sul River basin is located on the Rio de Janeiro-São Paulo axis, an area of great demographic density and intense industrialization. This work aimed to perform a quali-quantitative analysis of the organic matter (biopolymers, total organic carbon and sulfur) and the bacterial metabolic state in the estuarine-deltaic superficial sediments of the Paraíba do Sul River, relating them to their granulometric distribution. On average, 65.5% of sediments were classified as sandy and poor in carbon and sulfur, with average concentrations of 0.71% and 0.04%, respectively. The C:S element ratio indicates that the environment is predominantly oxidizing, which is coherent with the strong fluvial influence of such a middle-sized river over the estuary. The carbohydrate (average of 2075.93 μg C/g), protein (average of 25.70 μg C/g) and lipid (average of 363.10 μg C/g) biopolymers also presented concentrations lower than those found in other environments. Based on these low concentrations, the environment was classified as meso-oligotrophic. The CARBOHYDRATE:TOC ratio evidenced the impact from anthropic activities, more specifically from the input of domestic effluents along the entire river's course and from the sugar industry, strongly present on its lower course. The bacterial community responsible for organic matter hydrolysis is predominantly anaerobic and facultatively anaerobic, implying in loss of nitrogen to the atmosphere (denitrification) and production of sulfides (sulfate reduction), and the low PROTEIN:CARBOHYDRATE ratios reflect this loss of nitrogen (present in the protein compounds), considering the occurrence of denitrifying bacteria. The bacterial carbon values found are high (3.29 μg C/g) and they are also probably due to the impacts above described
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
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format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://revistas.ufrj.br/index.php/aigeo/article/view/6814
10.11137/2011_1_33-45
url https://revistas.ufrj.br/index.php/aigeo/article/view/6814
identifier_str_mv 10.11137/2011_1_33-45
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://revistas.ufrj.br/index.php/aigeo/article/view/6814/5411
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); 33-45
Anuário do Instituto de Geociências; Vol 34, No 1 (2011); 33-45
1982-3908
0101-9759
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