Thermal structure of the Poraquê lake, Central Amazonian, Brazil - doi: 10.4025/actascibiolsci.v33i2.5150
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Tipo de documento: | Artigo |
Idioma: | por eng |
Título da fonte: | Acta Scientiarum Biological Sciences |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5150 |
Resumo: | Thermal gradient of a Central Amazonian lake was studied to establish a link between seasonal variations in the water level, temperature, suspended particulate matter (SPM) and thermal stratification. Bimonthly measurements of temperature and PAR radiation were made at 0.25 m intervals from the surface to bottom from February 2004 to July 2006. Daily occurs full vertical mixing of the water column, and classic thermal stratification was not observed in the period. The effect of the winds associated to flood-pulse and the penetrative convection, transported the turbulent kinetic energy (TKE) into the lake mixing the column of water. This phenomenon was more expressive in the rainfall seasons when is generally higher contributing to the circulation of the water. The limit of the euphotic zone ranged from 1.36 to 1.77 m in the period studied. The results of the transmission curves for the sampling sites showed that, in general, less than 0.01% of the surface light reached the bottom. The trend curve developed can facilitate the understanding of the limnological and ecological processes in lentic systems of whitewaters of the Central Amazonian. |
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Thermal structure of the Poraquê lake, Central Amazonian, Brazil - doi: 10.4025/actascibiolsci.v33i2.5150Thermal structure of the Poraquê lake, Central Amazonian, Brazil - doi: 10.4025/actascibiolsci.v33i2.5150Stratificationvertical mixinghydrological cycleTKEtropical lakeAmazon floodplainEcologia de EcossistemasStratificationvertical mixinghydrological cycleTKEtropical lakeAmazon floodplainThermal gradient of a Central Amazonian lake was studied to establish a link between seasonal variations in the water level, temperature, suspended particulate matter (SPM) and thermal stratification. Bimonthly measurements of temperature and PAR radiation were made at 0.25 m intervals from the surface to bottom from February 2004 to July 2006. Daily occurs full vertical mixing of the water column, and classic thermal stratification was not observed in the period. The effect of the winds associated to flood-pulse and the penetrative convection, transported the turbulent kinetic energy (TKE) into the lake mixing the column of water. This phenomenon was more expressive in the rainfall seasons when is generally higher contributing to the circulation of the water. The limit of the euphotic zone ranged from 1.36 to 1.77 m in the period studied. The results of the transmission curves for the sampling sites showed that, in general, less than 0.01% of the surface light reached the bottom. The trend curve developed can facilitate the understanding of the limnological and ecological processes in lentic systems of whitewaters of the Central Amazonian.Thermal gradient of a Central Amazonian lake was studied to establish a link between seasonal variations in the water level, temperature, suspended particulate matter (SPM) and thermal stratification. Bimonthly measurements of temperature and PAR radiation were made at 0.25 m intervals from the surface to bottom from February 2004 to July 2006. Daily occurs full vertical mixing of the water column, and classic thermal stratification was not observed in the period. The effect of the winds associated to flood-pulse and the penetrative convection, transported the turbulent kinetic energy (TKE) into the lake mixing the column of water. This phenomenon was more expressive in the rainfall seasons when is generally higher contributing to the circulation of the water. The limit of the euphotic zone ranged from 1.36 to 1.77 m in the period studied. The results of the transmission curves for the sampling sites showed that, in general, less than 0.01% of the surface light reached the bottom. The trend curve developed can facilitate the understanding of the limnological and ecological processes in lentic systems of whitewaters of the Central Amazonian.Universidade Estadual De Maringá2011-02-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionEstudos morfológicos e físico-químicosapplication/pdfapplication/pdfapplication/mswordhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/515010.4025/actascibiolsci.v33i2.5150Acta Scientiarum. Biological Sciences; Vol 33 No 2 (2011); 171-178Acta Scientiarum. Biological Sciences; v. 33 n. 2 (2011); 171-1781807-863X1679-9283reponame:Acta Scientiarum Biological Sciencesinstname:Universidade Estadual de Maringá (UEM)instacron:UEMporenghttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5150/5150http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5150/5150Ahttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5150/751375140936Aprile, Fabio Marquesinfo:eu-repo/semantics/openAccess2022-11-23T17:33:46Zoai:periodicos.uem.br/ojs:article/5150Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/oai||actabiol@uem.br1807-863X1679-9283opendoar:2022-11-23T17:33:46Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Thermal structure of the Poraquê lake, Central Amazonian, Brazil - doi: 10.4025/actascibiolsci.v33i2.5150 Thermal structure of the Poraquê lake, Central Amazonian, Brazil - doi: 10.4025/actascibiolsci.v33i2.5150 |
title |
Thermal structure of the Poraquê lake, Central Amazonian, Brazil - doi: 10.4025/actascibiolsci.v33i2.5150 |
spellingShingle |
Thermal structure of the Poraquê lake, Central Amazonian, Brazil - doi: 10.4025/actascibiolsci.v33i2.5150 Aprile, Fabio Marques Stratification vertical mixing hydrological cycle TKE tropical lake Amazon floodplain Ecologia de Ecossistemas Stratification vertical mixing hydrological cycle TKE tropical lake Amazon floodplain |
title_short |
Thermal structure of the Poraquê lake, Central Amazonian, Brazil - doi: 10.4025/actascibiolsci.v33i2.5150 |
title_full |
Thermal structure of the Poraquê lake, Central Amazonian, Brazil - doi: 10.4025/actascibiolsci.v33i2.5150 |
title_fullStr |
Thermal structure of the Poraquê lake, Central Amazonian, Brazil - doi: 10.4025/actascibiolsci.v33i2.5150 |
title_full_unstemmed |
Thermal structure of the Poraquê lake, Central Amazonian, Brazil - doi: 10.4025/actascibiolsci.v33i2.5150 |
title_sort |
Thermal structure of the Poraquê lake, Central Amazonian, Brazil - doi: 10.4025/actascibiolsci.v33i2.5150 |
author |
Aprile, Fabio Marques |
author_facet |
Aprile, Fabio Marques |
author_role |
author |
dc.contributor.author.fl_str_mv |
Aprile, Fabio Marques |
dc.subject.por.fl_str_mv |
Stratification vertical mixing hydrological cycle TKE tropical lake Amazon floodplain Ecologia de Ecossistemas Stratification vertical mixing hydrological cycle TKE tropical lake Amazon floodplain |
topic |
Stratification vertical mixing hydrological cycle TKE tropical lake Amazon floodplain Ecologia de Ecossistemas Stratification vertical mixing hydrological cycle TKE tropical lake Amazon floodplain |
description |
Thermal gradient of a Central Amazonian lake was studied to establish a link between seasonal variations in the water level, temperature, suspended particulate matter (SPM) and thermal stratification. Bimonthly measurements of temperature and PAR radiation were made at 0.25 m intervals from the surface to bottom from February 2004 to July 2006. Daily occurs full vertical mixing of the water column, and classic thermal stratification was not observed in the period. The effect of the winds associated to flood-pulse and the penetrative convection, transported the turbulent kinetic energy (TKE) into the lake mixing the column of water. This phenomenon was more expressive in the rainfall seasons when is generally higher contributing to the circulation of the water. The limit of the euphotic zone ranged from 1.36 to 1.77 m in the period studied. The results of the transmission curves for the sampling sites showed that, in general, less than 0.01% of the surface light reached the bottom. The trend curve developed can facilitate the understanding of the limnological and ecological processes in lentic systems of whitewaters of the Central Amazonian. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-02-08 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Estudos morfológicos e físico-químicos |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5150 10.4025/actascibiolsci.v33i2.5150 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5150 |
identifier_str_mv |
10.4025/actascibiolsci.v33i2.5150 |
dc.language.iso.fl_str_mv |
por eng |
language |
por eng |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5150/5150 http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5150/5150A http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5150/751375140936 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/msword |
dc.publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Biological Sciences; Vol 33 No 2 (2011); 171-178 Acta Scientiarum. Biological Sciences; v. 33 n. 2 (2011); 171-178 1807-863X 1679-9283 reponame:Acta Scientiarum Biological Sciences instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum Biological Sciences |
collection |
Acta Scientiarum Biological Sciences |
repository.name.fl_str_mv |
Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
||actabiol@uem.br |
_version_ |
1799317394169004032 |