Bacterial growth and DOC consumption in a tropical coastal lagoon
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Biology |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842006000300002 |
Resumo: | The aims of this research were to determine the main limiting nutrient to bacterial growth in Imboassica lagoon, southeastern Brazil, to estimate the percentage of dissolved organic carbon (DOC) available for bacterial growth, and to determine the bacterial growth efficiency (BGE) of natural assemblages. Bacterial growth and DOC consumption were determined in batch culture experiments, in which water samples were supplemented with nitrogen and phosphorus together or separately, or incubated without nutrient additions. When added together, N and P stimulated higher bacterial growth rates and production, as well as higher DOC consumption. The BGEs and DOC consumption rates were strongly dependent on the method used to determine bacterial production. The BGE ranged from 11 to 72%. However, only a minor fraction of bulk DOC was consumed by the planktonic bacteria (from 0.7 to 3.4%). The results suggest that low availability of phosphorus and nitrogen coupled with excess organic carbon was the main factor responsible for the relatively low bacterial utilization of DOC in Imboassica lagoon. |
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Brazilian Journal of Biology |
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Bacterial growth and DOC consumption in a tropical coastal lagoonbacterioplanktonDOC consumptionBGEcoastal lagoonsphosphorus and nitrogen colimitationThe aims of this research were to determine the main limiting nutrient to bacterial growth in Imboassica lagoon, southeastern Brazil, to estimate the percentage of dissolved organic carbon (DOC) available for bacterial growth, and to determine the bacterial growth efficiency (BGE) of natural assemblages. Bacterial growth and DOC consumption were determined in batch culture experiments, in which water samples were supplemented with nitrogen and phosphorus together or separately, or incubated without nutrient additions. When added together, N and P stimulated higher bacterial growth rates and production, as well as higher DOC consumption. The BGEs and DOC consumption rates were strongly dependent on the method used to determine bacterial production. The BGE ranged from 11 to 72%. However, only a minor fraction of bulk DOC was consumed by the planktonic bacteria (from 0.7 to 3.4%). The results suggest that low availability of phosphorus and nitrogen coupled with excess organic carbon was the main factor responsible for the relatively low bacterial utilization of DOC in Imboassica lagoon.Instituto Internacional de Ecologia2006-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842006000300002Brazilian Journal of Biology v.66 n.2a 2006reponame:Brazilian Journal of Biologyinstname:Instituto Internacional de Ecologia (IIE)instacron:IIE10.1590/S1519-69842006000300002info:eu-repo/semantics/openAccessFarjalla,V. F.Enrich-Prast,A.Esteves,F. A.Cimbleris,A. C. P.eng2006-07-17T00:00:00Zoai:scielo:S1519-69842006000300002Revistahttps://www.scielo.br/j/bjb/https://old.scielo.br/oai/scielo-oai.phpbjb@bjb.com.br||bjb@bjb.com.br1678-43751519-6984opendoar:2006-07-17T00:00Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE)false |
dc.title.none.fl_str_mv |
Bacterial growth and DOC consumption in a tropical coastal lagoon |
title |
Bacterial growth and DOC consumption in a tropical coastal lagoon |
spellingShingle |
Bacterial growth and DOC consumption in a tropical coastal lagoon Farjalla,V. F. bacterioplankton DOC consumption BGE coastal lagoons phosphorus and nitrogen colimitation |
title_short |
Bacterial growth and DOC consumption in a tropical coastal lagoon |
title_full |
Bacterial growth and DOC consumption in a tropical coastal lagoon |
title_fullStr |
Bacterial growth and DOC consumption in a tropical coastal lagoon |
title_full_unstemmed |
Bacterial growth and DOC consumption in a tropical coastal lagoon |
title_sort |
Bacterial growth and DOC consumption in a tropical coastal lagoon |
author |
Farjalla,V. F. |
author_facet |
Farjalla,V. F. Enrich-Prast,A. Esteves,F. A. Cimbleris,A. C. P. |
author_role |
author |
author2 |
Enrich-Prast,A. Esteves,F. A. Cimbleris,A. C. P. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Farjalla,V. F. Enrich-Prast,A. Esteves,F. A. Cimbleris,A. C. P. |
dc.subject.por.fl_str_mv |
bacterioplankton DOC consumption BGE coastal lagoons phosphorus and nitrogen colimitation |
topic |
bacterioplankton DOC consumption BGE coastal lagoons phosphorus and nitrogen colimitation |
description |
The aims of this research were to determine the main limiting nutrient to bacterial growth in Imboassica lagoon, southeastern Brazil, to estimate the percentage of dissolved organic carbon (DOC) available for bacterial growth, and to determine the bacterial growth efficiency (BGE) of natural assemblages. Bacterial growth and DOC consumption were determined in batch culture experiments, in which water samples were supplemented with nitrogen and phosphorus together or separately, or incubated without nutrient additions. When added together, N and P stimulated higher bacterial growth rates and production, as well as higher DOC consumption. The BGEs and DOC consumption rates were strongly dependent on the method used to determine bacterial production. The BGE ranged from 11 to 72%. However, only a minor fraction of bulk DOC was consumed by the planktonic bacteria (from 0.7 to 3.4%). The results suggest that low availability of phosphorus and nitrogen coupled with excess organic carbon was the main factor responsible for the relatively low bacterial utilization of DOC in Imboassica lagoon. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-05-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842006000300002 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842006000300002 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1519-69842006000300002 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Instituto Internacional de Ecologia |
publisher.none.fl_str_mv |
Instituto Internacional de Ecologia |
dc.source.none.fl_str_mv |
Brazilian Journal of Biology v.66 n.2a 2006 reponame:Brazilian Journal of Biology instname:Instituto Internacional de Ecologia (IIE) instacron:IIE |
instname_str |
Instituto Internacional de Ecologia (IIE) |
instacron_str |
IIE |
institution |
IIE |
reponame_str |
Brazilian Journal of Biology |
collection |
Brazilian Journal of Biology |
repository.name.fl_str_mv |
Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE) |
repository.mail.fl_str_mv |
bjb@bjb.com.br||bjb@bjb.com.br |
_version_ |
1752129875931561984 |