Methanogenesis in an impacted and two dystrophic coastal lagoons (Macaé, Brazil)
This study investigated the methanogenic activity in sediment of the Imboacica (human impacted), Cabiúnas and Comprida coastal lagoons in Rio de Janeiro State (Brazil). Methane was not detected in water and sediment samples from the three lagoons. The measured nutrient concentrations in the pore-wat...
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Instituto de Tecnologia do Paraná (Tecpar)
2002-06-01
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doaj-b6814cddd8d94c3ab7c41dd1d64753932020-11-25T01:13:02ZengInstituto de Tecnologia do Paraná (Tecpar)Brazilian Archives of Biology and Technology1516-89131678-43242002-06-0145219520210.1590/S1516-89132002000200011Methanogenesis in an impacted and two dystrophic coastal lagoons (Macaé, Brazil)André Luiz dos Santos FurtadoPeter CasperFrancisco de Assis EstevesThis study investigated the methanogenic activity in sediment of the Imboacica (human impacted), Cabiúnas and Comprida coastal lagoons in Rio de Janeiro State (Brazil). Methane was not detected in water and sediment samples from the three lagoons. The measured nutrient concentrations in the pore-water indicated that methanogens activity was not limited by nutrients. Methanogenic activity was not detected under in vitro conditions, indicating that terminal organic carbon mineralisation via methanogenesis was negligible for the top 6 cm of sediment at the sampling time.<br>O objetivo deste estudo foi investigar a atividade metanogênica no sedimento das lagoas Imboacica, Cabiúnas e Comprida (Macaé, Rio de Janeiro). As amostras de água e sedimento foram coletadas em duas estações em cada lagoa. A atividade metanogênica nas três lagoas foi abaixo do limite de detecção do método utilizado (cromatografia gasosa). Os resultados obtidos indicaram que a atividade metanogênica não foi limitada pela concentração de nutrientes na água intersticial. Sob condições experimentais, a atividade metanogênica foi nula, indicando que a mineralização do carbono orgânico via metanogênese foi desprezível nas três lagoas durante o período amostrado.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000200011Coastal lagoonmethanesedimentnutrients |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
André Luiz dos Santos Furtado Peter Casper Francisco de Assis Esteves |
spellingShingle |
André Luiz dos Santos Furtado Peter Casper Francisco de Assis Esteves Methanogenesis in an impacted and two dystrophic coastal lagoons (Macaé, Brazil) Brazilian Archives of Biology and Technology Coastal lagoon methane sediment nutrients |
author_facet |
André Luiz dos Santos Furtado Peter Casper Francisco de Assis Esteves |
author_sort |
André Luiz dos Santos Furtado |
title |
Methanogenesis in an impacted and two dystrophic coastal lagoons (Macaé, Brazil) |
title_short |
Methanogenesis in an impacted and two dystrophic coastal lagoons (Macaé, Brazil) |
title_full |
Methanogenesis in an impacted and two dystrophic coastal lagoons (Macaé, Brazil) |
title_fullStr |
Methanogenesis in an impacted and two dystrophic coastal lagoons (Macaé, Brazil) |
title_full_unstemmed |
Methanogenesis in an impacted and two dystrophic coastal lagoons (Macaé, Brazil) |
title_sort |
methanogenesis in an impacted and two dystrophic coastal lagoons (macaé, brazil) |
publisher |
Instituto de Tecnologia do Paraná (Tecpar) |
series |
Brazilian Archives of Biology and Technology |
issn |
1516-8913 1678-4324 |
publishDate |
2002-06-01 |
description |
This study investigated the methanogenic activity in sediment of the Imboacica (human impacted), Cabiúnas and Comprida coastal lagoons in Rio de Janeiro State (Brazil). Methane was not detected in water and sediment samples from the three lagoons. The measured nutrient concentrations in the pore-water indicated that methanogens activity was not limited by nutrients. Methanogenic activity was not detected under in vitro conditions, indicating that terminal organic carbon mineralisation via methanogenesis was negligible for the top 6 cm of sediment at the sampling time.<br>O objetivo deste estudo foi investigar a atividade metanogênica no sedimento das lagoas Imboacica, Cabiúnas e Comprida (Macaé, Rio de Janeiro). As amostras de água e sedimento foram coletadas em duas estações em cada lagoa. A atividade metanogênica nas três lagoas foi abaixo do limite de detecção do método utilizado (cromatografia gasosa). Os resultados obtidos indicaram que a atividade metanogênica não foi limitada pela concentração de nutrientes na água intersticial. Sob condições experimentais, a atividade metanogênica foi nula, indicando que a mineralização do carbono orgânico via metanogênese foi desprezível nas três lagoas durante o período amostrado. |
topic |
Coastal lagoon methane sediment nutrients |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000200011 |
work_keys_str_mv |
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