Limnological considerations about an Amazonian floodplain lake (Catalão lake – Amazonas State, Brazil) - DOI: 10.4025/actascibiolsci.v31i4.4641
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Data de Publicação: | 2009 |
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Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Acta Scientiarum Biological Sciences |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/4641 |
Resumo: | The temporal and spatial variation of some limnological variables in the limnetic zone of an Amazonian floodplain lake, Catalão Lake, was studied. The following parameters were measured weekly during the dry period of 2006 and the flood period of 2007: water temperature, euphotic zone, mixing zone, electrical conductivity, dissolved oxygen, water transparency and total phosphorus and nitrogen. Simple regressions were carried out to test the hypothesis of environmental homogeneity as a function of flooding. Also, diel temperature, dissolved oxygen and electric conductivity profiles were studied during the dry period and in the flood period. The results show the importance of the flood pulse in the variation of the physical and chemical variables in the lake. The PCA indicated that, during the dry period, the physical and chemical variables had a stronger spatial pattern of distribution, while during the flood period, the pattern was temporal. The regressions indicated the homogeneity of the environment as a function of flooding. The results of the diel cycles seem to indicate that Catalão lake has a polimictic and oligomictic behavior during the dry and flood periods, respectively |
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Limnological considerations about an Amazonian floodplain lake (Catalão lake – Amazonas State, Brazil) - DOI: 10.4025/actascibiolsci.v31i4.4641Considerações limnológicas sobre um lago da planície de inundação amazônica (lago Catalão – Estado do Amazonas, Brasil) - DOI: 10.4025/actascibiolsci.v31i4.4641limnological variablesdiel variationflood plain lakeseasonal variationflood pulseBrazilian Amazonvariáveis limnológicasvariação nictemeralplanície de inundaçãovariação sazonalpulso de inundaçãoAmazônia BrasileiraEcologia de Ecossistemas (Limnologia)The temporal and spatial variation of some limnological variables in the limnetic zone of an Amazonian floodplain lake, Catalão Lake, was studied. The following parameters were measured weekly during the dry period of 2006 and the flood period of 2007: water temperature, euphotic zone, mixing zone, electrical conductivity, dissolved oxygen, water transparency and total phosphorus and nitrogen. Simple regressions were carried out to test the hypothesis of environmental homogeneity as a function of flooding. Also, diel temperature, dissolved oxygen and electric conductivity profiles were studied during the dry period and in the flood period. The results show the importance of the flood pulse in the variation of the physical and chemical variables in the lake. The PCA indicated that, during the dry period, the physical and chemical variables had a stronger spatial pattern of distribution, while during the flood period, the pattern was temporal. The regressions indicated the homogeneity of the environment as a function of flooding. The results of the diel cycles seem to indicate that Catalão lake has a polimictic and oligomictic behavior during the dry and flood periods, respectivelyEste estudo aborda a variação temporal (sazonal, semanal e nictemeral) e espacial de algumas variáveis limnológicas na região limnética do lago Catalão, um lago da planície de inundação do rio Amazonas. Foram analisados os valores de temperatura, zona eufótica, zona de mistura, condutividade elétrica, oxigênio dissolvido, transparência, nitrogênio e fósforo total, amostrados em quatro estações, em escala semanal, durante um mês no período de seca de 2006 e um mês no período de cheia de 2007. Regressões simples foram realizadas para testar a hipótese da homogeneização de ambientes aquáticos em função da inundação. Foram analisados, também, os valores de temperatura, oxigênio dissolvido e condutividade elétrica em um perfil vertical ao longo de um ciclo nictemeral na seca e outro na cheia. Os resultados confirmam a importância do pulso de inundação na dinâmica das variáveis físicas e químicas no lago. A ACP indicou que o maior gradiente das variáveis físicas e químicas na seca foi o espacial. Já na cheia, o padrão de comportamento foi temporal. As regressões indicaram homogeneização do ambiente em função da inundação. Os resultados das análises nictemerais indicam que o lago Catalão apresenta comportamento polimítico na seca e oligomítico na cheiaUniversidade Estadual De Maringá2009-08-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/464110.4025/actascibiolsci.v31i4.4641Acta Scientiarum. Biological Sciences; Vol 31 No 4 (2009); 387-395Acta Scientiarum. Biological Sciences; v. 31 n. 4 (2009); 387-3951807-863X1679-9283reponame:Acta Scientiarum Biological Sciencesinstname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/4641/4641Almeida, Fabiane Ferreira deMelo, Sérgioinfo:eu-repo/semantics/openAccess2022-11-23T17:33:43Zoai:periodicos.uem.br/ojs:article/4641Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/oai||actabiol@uem.br1807-863X1679-9283opendoar:2022-11-23T17:33:43Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Limnological considerations about an Amazonian floodplain lake (Catalão lake – Amazonas State, Brazil) - DOI: 10.4025/actascibiolsci.v31i4.4641 Considerações limnológicas sobre um lago da planície de inundação amazônica (lago Catalão – Estado do Amazonas, Brasil) - DOI: 10.4025/actascibiolsci.v31i4.4641 |
title |
Limnological considerations about an Amazonian floodplain lake (Catalão lake – Amazonas State, Brazil) - DOI: 10.4025/actascibiolsci.v31i4.4641 |
spellingShingle |
Limnological considerations about an Amazonian floodplain lake (Catalão lake – Amazonas State, Brazil) - DOI: 10.4025/actascibiolsci.v31i4.4641 Almeida, Fabiane Ferreira de limnological variables diel variation flood plain lake seasonal variation flood pulse Brazilian Amazon variáveis limnológicas variação nictemeral planície de inundação variação sazonal pulso de inundação Amazônia Brasileira Ecologia de Ecossistemas (Limnologia) |
title_short |
Limnological considerations about an Amazonian floodplain lake (Catalão lake – Amazonas State, Brazil) - DOI: 10.4025/actascibiolsci.v31i4.4641 |
title_full |
Limnological considerations about an Amazonian floodplain lake (Catalão lake – Amazonas State, Brazil) - DOI: 10.4025/actascibiolsci.v31i4.4641 |
title_fullStr |
Limnological considerations about an Amazonian floodplain lake (Catalão lake – Amazonas State, Brazil) - DOI: 10.4025/actascibiolsci.v31i4.4641 |
title_full_unstemmed |
Limnological considerations about an Amazonian floodplain lake (Catalão lake – Amazonas State, Brazil) - DOI: 10.4025/actascibiolsci.v31i4.4641 |
title_sort |
Limnological considerations about an Amazonian floodplain lake (Catalão lake – Amazonas State, Brazil) - DOI: 10.4025/actascibiolsci.v31i4.4641 |
author |
Almeida, Fabiane Ferreira de |
author_facet |
Almeida, Fabiane Ferreira de Melo, Sérgio |
author_role |
author |
author2 |
Melo, Sérgio |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Almeida, Fabiane Ferreira de Melo, Sérgio |
dc.subject.por.fl_str_mv |
limnological variables diel variation flood plain lake seasonal variation flood pulse Brazilian Amazon variáveis limnológicas variação nictemeral planície de inundação variação sazonal pulso de inundação Amazônia Brasileira Ecologia de Ecossistemas (Limnologia) |
topic |
limnological variables diel variation flood plain lake seasonal variation flood pulse Brazilian Amazon variáveis limnológicas variação nictemeral planície de inundação variação sazonal pulso de inundação Amazônia Brasileira Ecologia de Ecossistemas (Limnologia) |
description |
The temporal and spatial variation of some limnological variables in the limnetic zone of an Amazonian floodplain lake, Catalão Lake, was studied. The following parameters were measured weekly during the dry period of 2006 and the flood period of 2007: water temperature, euphotic zone, mixing zone, electrical conductivity, dissolved oxygen, water transparency and total phosphorus and nitrogen. Simple regressions were carried out to test the hypothesis of environmental homogeneity as a function of flooding. Also, diel temperature, dissolved oxygen and electric conductivity profiles were studied during the dry period and in the flood period. The results show the importance of the flood pulse in the variation of the physical and chemical variables in the lake. The PCA indicated that, during the dry period, the physical and chemical variables had a stronger spatial pattern of distribution, while during the flood period, the pattern was temporal. The regressions indicated the homogeneity of the environment as a function of flooding. The results of the diel cycles seem to indicate that Catalão lake has a polimictic and oligomictic behavior during the dry and flood periods, respectively |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-08-20 |
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 |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/4641 10.4025/actascibiolsci.v31i4.4641 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/4641 |
identifier_str_mv |
10.4025/actascibiolsci.v31i4.4641 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/4641/4641 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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 31 No 4 (2009); 387-395 Acta Scientiarum. Biological Sciences; v. 31 n. 4 (2009); 387-395 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_ |
1799317394096652288 |