Variação sazonal da comunidade protozooplanctônica em um ambiente oligotrófico tropical (reservatório de Ilha Solteira, Brasil)
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1519-69842013000200012 http://hdl.handle.net/11449/75296 |
Resumo: | The seasonal variation of the protozooplanktonic community (ciliates and testate amoebae) was studied in a tropical oligotrophic reservoir in Brazil, which was under the influence of two contrasting climatic seasons (rainy/warm and dry/cold). The aim of this study was to evaluate the effect of these climatic changes on physical, chemical and biological variables in the dynamic of this community. The highest mean density of total protozoans occurred in the rainy/warm season (5683.2 ind L-1), while the lowest was in the dry/cold (2016.0 ind L-1). Considering the seasonal variations, the protozoan groups that are truly planktonic, such as the oligotrichs (Spirotrichea), predominated in the dry season, whereas during the rainy season, due to the material input and resuspension of sediment, sessile protozoans of the Peritrichia group were the most important ones. The dominant protozoans were Urotricha globosa, Cothurnia annulata, Pseudodifflugia sp. and Halteria grandinella. The highest densities of H. grandinella were associated with more oxygenated and transparent water conditions, while the highest densities of C. annulata occurred in sites with high turbidity, pH and trophic state index (TSI). The study demonstrated that density and composition of protozooplanktonic species and groups of the reservoir suffered seasonal variation due to the environmental variables (mainly temperature, turbidity, water transparency, dissolved oxygen and TSI) and the biological variables (e.g. morphological characteristics, eating habits and escape strategies from predation of the species). |
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Variação sazonal da comunidade protozooplanctônica em um ambiente oligotrófico tropical (reservatório de Ilha Solteira, Brasil)Seasonal variation of the protozooplanktonic community in a tropical oligotrophic environment (Ilha Solteira reservoir, Brazil)CiliatesFreshwaterProtozoansTestate amoebaeThe seasonal variation of the protozooplanktonic community (ciliates and testate amoebae) was studied in a tropical oligotrophic reservoir in Brazil, which was under the influence of two contrasting climatic seasons (rainy/warm and dry/cold). The aim of this study was to evaluate the effect of these climatic changes on physical, chemical and biological variables in the dynamic of this community. The highest mean density of total protozoans occurred in the rainy/warm season (5683.2 ind L-1), while the lowest was in the dry/cold (2016.0 ind L-1). Considering the seasonal variations, the protozoan groups that are truly planktonic, such as the oligotrichs (Spirotrichea), predominated in the dry season, whereas during the rainy season, due to the material input and resuspension of sediment, sessile protozoans of the Peritrichia group were the most important ones. The dominant protozoans were Urotricha globosa, Cothurnia annulata, Pseudodifflugia sp. and Halteria grandinella. The highest densities of H. grandinella were associated with more oxygenated and transparent water conditions, while the highest densities of C. annulata occurred in sites with high turbidity, pH and trophic state index (TSI). The study demonstrated that density and composition of protozooplanktonic species and groups of the reservoir suffered seasonal variation due to the environmental variables (mainly temperature, turbidity, water transparency, dissolved oxygen and TSI) and the biological variables (e.g. morphological characteristics, eating habits and escape strategies from predation of the species).Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Departamento de Ecologia e Biologia Evolutiva Universidade Federal de São Carlos - UFSCar, Rod. Washington Luis, CEP 13564-905, São Carlos, SPDepartamento de Fitossanidade, Engenharia Rural e Solos Universidade Estadual Paulista - UNESP, Rua Monção, 226, CEP 15385-000, Ilha Solteira, SPDepartamento de Fitossanidade, Engenharia Rural e Solos Universidade Estadual Paulista - UNESP, Rua Monção, 226, CEP 15385-000, Ilha Solteira, SPFAPESP: 06/57209-5Universidade Federal de São Carlos (UFSCar)Universidade Estadual Paulista (Unesp)Mansano, A. S.Hisatugo, K. F.Leite, M. A. [UNESP]Luzia, A. P.Regali-Seleghim, M. H.2014-05-27T11:29:05Z2014-05-27T11:29:05Z2013-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article321-330application/pdfhttp://dx.doi.org/10.1590/S1519-69842013000200012Brazilian Journal of Biology, v. 73, n. 2, p. 321-330, 2013.1519-69841678-4375http://hdl.handle.net/11449/7529610.1590/S1519-69842013000200012S1519-69842013000200012WOS:0003225364000112-s2.0-848807606522-s2.0-84880760652.pdf7536465302063969Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengporBrazilian Journal of Biology0.7840,523info:eu-repo/semantics/openAccess2024-01-07T06:23:35Zoai:repositorio.unesp.br:11449/75296Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-01-07T06:23:35Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Variação sazonal da comunidade protozooplanctônica em um ambiente oligotrófico tropical (reservatório de Ilha Solteira, Brasil) Seasonal variation of the protozooplanktonic community in a tropical oligotrophic environment (Ilha Solteira reservoir, Brazil) |
title |
Variação sazonal da comunidade protozooplanctônica em um ambiente oligotrófico tropical (reservatório de Ilha Solteira, Brasil) |
spellingShingle |
Variação sazonal da comunidade protozooplanctônica em um ambiente oligotrófico tropical (reservatório de Ilha Solteira, Brasil) Mansano, A. S. Ciliates Freshwater Protozoans Testate amoebae |
title_short |
Variação sazonal da comunidade protozooplanctônica em um ambiente oligotrófico tropical (reservatório de Ilha Solteira, Brasil) |
title_full |
Variação sazonal da comunidade protozooplanctônica em um ambiente oligotrófico tropical (reservatório de Ilha Solteira, Brasil) |
title_fullStr |
Variação sazonal da comunidade protozooplanctônica em um ambiente oligotrófico tropical (reservatório de Ilha Solteira, Brasil) |
title_full_unstemmed |
Variação sazonal da comunidade protozooplanctônica em um ambiente oligotrófico tropical (reservatório de Ilha Solteira, Brasil) |
title_sort |
Variação sazonal da comunidade protozooplanctônica em um ambiente oligotrófico tropical (reservatório de Ilha Solteira, Brasil) |
author |
Mansano, A. S. |
author_facet |
Mansano, A. S. Hisatugo, K. F. Leite, M. A. [UNESP] Luzia, A. P. Regali-Seleghim, M. H. |
author_role |
author |
author2 |
Hisatugo, K. F. Leite, M. A. [UNESP] Luzia, A. P. Regali-Seleghim, M. H. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de São Carlos (UFSCar) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Mansano, A. S. Hisatugo, K. F. Leite, M. A. [UNESP] Luzia, A. P. Regali-Seleghim, M. H. |
dc.subject.por.fl_str_mv |
Ciliates Freshwater Protozoans Testate amoebae |
topic |
Ciliates Freshwater Protozoans Testate amoebae |
description |
The seasonal variation of the protozooplanktonic community (ciliates and testate amoebae) was studied in a tropical oligotrophic reservoir in Brazil, which was under the influence of two contrasting climatic seasons (rainy/warm and dry/cold). The aim of this study was to evaluate the effect of these climatic changes on physical, chemical and biological variables in the dynamic of this community. The highest mean density of total protozoans occurred in the rainy/warm season (5683.2 ind L-1), while the lowest was in the dry/cold (2016.0 ind L-1). Considering the seasonal variations, the protozoan groups that are truly planktonic, such as the oligotrichs (Spirotrichea), predominated in the dry season, whereas during the rainy season, due to the material input and resuspension of sediment, sessile protozoans of the Peritrichia group were the most important ones. The dominant protozoans were Urotricha globosa, Cothurnia annulata, Pseudodifflugia sp. and Halteria grandinella. The highest densities of H. grandinella were associated with more oxygenated and transparent water conditions, while the highest densities of C. annulata occurred in sites with high turbidity, pH and trophic state index (TSI). The study demonstrated that density and composition of protozooplanktonic species and groups of the reservoir suffered seasonal variation due to the environmental variables (mainly temperature, turbidity, water transparency, dissolved oxygen and TSI) and the biological variables (e.g. morphological characteristics, eating habits and escape strategies from predation of the species). |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-05-01 2014-05-27T11:29:05Z 2014-05-27T11:29:05Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S1519-69842013000200012 Brazilian Journal of Biology, v. 73, n. 2, p. 321-330, 2013. 1519-6984 1678-4375 http://hdl.handle.net/11449/75296 10.1590/S1519-69842013000200012 S1519-69842013000200012 WOS:000322536400011 2-s2.0-84880760652 2-s2.0-84880760652.pdf 7536465302063969 |
url |
http://dx.doi.org/10.1590/S1519-69842013000200012 http://hdl.handle.net/11449/75296 |
identifier_str_mv |
Brazilian Journal of Biology, v. 73, n. 2, p. 321-330, 2013. 1519-6984 1678-4375 10.1590/S1519-69842013000200012 S1519-69842013000200012 WOS:000322536400011 2-s2.0-84880760652 2-s2.0-84880760652.pdf 7536465302063969 |
dc.language.iso.fl_str_mv |
eng por |
language |
eng por |
dc.relation.none.fl_str_mv |
Brazilian Journal of Biology 0.784 0,523 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
321-330 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1797790225337942016 |