An assessment of the factors determining rotifer assemblage in river-lake systems: the effects of seasonality and habitat

Detalhes bibliográficos
Autor(a) principal: Serafim-Júnior,Moacyr
Data de Publicação: 2019
Outros Autores: Perbiche-Neves,Gilmar, Lansac-Tôha,Fabio A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Zoologia (Curitiba. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702019000100305
Resumo: ABSTRACT Zooplankton exhibit several trends of variation in space and time, and these trends can be more evident in natural environments without anthropic perturbations. Examples of anthropic factors are climate change, eutrophication and construction of reservoirs. This study evaluated the influence of three factors - seasonality, type of environment and the presence of aquatic macrophytes - on various ecological attributes of rotifers in a river-lake system located in the Paraná River floodplain. Monthly samplings were conducted during 1993 and 1994. The mean species richness per sample was 60 species. The seasonality and the type of environment influenced the ecological attributes of rotifer assemblages, while the presence or absence of aquatic macrophytes did not. Species richness was highest in the lake system and during the months when water levels were low. Multivariate analysis indicates a small group of species associated with the low water-level phase. In contrast, many species were associated with high water levels or increasing water levels. The seasonal variation of hydrological cycle and the type of environment are the most important factors for rotifer structure in natural conditions.
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spelling An assessment of the factors determining rotifer assemblage in river-lake systems: the effects of seasonality and habitatEcologylimnologyRotiferaUpper Paraná River floodplainABSTRACT Zooplankton exhibit several trends of variation in space and time, and these trends can be more evident in natural environments without anthropic perturbations. Examples of anthropic factors are climate change, eutrophication and construction of reservoirs. This study evaluated the influence of three factors - seasonality, type of environment and the presence of aquatic macrophytes - on various ecological attributes of rotifers in a river-lake system located in the Paraná River floodplain. Monthly samplings were conducted during 1993 and 1994. The mean species richness per sample was 60 species. The seasonality and the type of environment influenced the ecological attributes of rotifer assemblages, while the presence or absence of aquatic macrophytes did not. Species richness was highest in the lake system and during the months when water levels were low. Multivariate analysis indicates a small group of species associated with the low water-level phase. In contrast, many species were associated with high water levels or increasing water levels. The seasonal variation of hydrological cycle and the type of environment are the most important factors for rotifer structure in natural conditions.Sociedade Brasileira de Zoologia2019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702019000100305Zoologia (Curitiba) v.36 2019reponame:Zoologia (Curitiba. Online)instname:Sociedade Brasileira de Zoologiainstacron:SBZ10.3897/zoologia.36.e24191info:eu-repo/semantics/openAccessSerafim-Júnior,MoacyrPerbiche-Neves,GilmarLansac-Tôha,Fabio A.eng2019-06-04T00:00:00Zoai:scielo:S1984-46702019000100305Revistahttp://www.scielo.br/zoolONGhttps://old.scielo.br/oai/scielo-oai.phpsbz@sbzoologia.org.br1984-46891984-4670opendoar:2019-06-04T00:00Zoologia (Curitiba. Online) - Sociedade Brasileira de Zoologiafalse
dc.title.none.fl_str_mv An assessment of the factors determining rotifer assemblage in river-lake systems: the effects of seasonality and habitat
title An assessment of the factors determining rotifer assemblage in river-lake systems: the effects of seasonality and habitat
spellingShingle An assessment of the factors determining rotifer assemblage in river-lake systems: the effects of seasonality and habitat
Serafim-Júnior,Moacyr
Ecology
limnology
Rotifera
Upper Paraná River floodplain
title_short An assessment of the factors determining rotifer assemblage in river-lake systems: the effects of seasonality and habitat
title_full An assessment of the factors determining rotifer assemblage in river-lake systems: the effects of seasonality and habitat
title_fullStr An assessment of the factors determining rotifer assemblage in river-lake systems: the effects of seasonality and habitat
title_full_unstemmed An assessment of the factors determining rotifer assemblage in river-lake systems: the effects of seasonality and habitat
title_sort An assessment of the factors determining rotifer assemblage in river-lake systems: the effects of seasonality and habitat
author Serafim-Júnior,Moacyr
author_facet Serafim-Júnior,Moacyr
Perbiche-Neves,Gilmar
Lansac-Tôha,Fabio A.
author_role author
author2 Perbiche-Neves,Gilmar
Lansac-Tôha,Fabio A.
author2_role author
author
dc.contributor.author.fl_str_mv Serafim-Júnior,Moacyr
Perbiche-Neves,Gilmar
Lansac-Tôha,Fabio A.
dc.subject.por.fl_str_mv Ecology
limnology
Rotifera
Upper Paraná River floodplain
topic Ecology
limnology
Rotifera
Upper Paraná River floodplain
description ABSTRACT Zooplankton exhibit several trends of variation in space and time, and these trends can be more evident in natural environments without anthropic perturbations. Examples of anthropic factors are climate change, eutrophication and construction of reservoirs. This study evaluated the influence of three factors - seasonality, type of environment and the presence of aquatic macrophytes - on various ecological attributes of rotifers in a river-lake system located in the Paraná River floodplain. Monthly samplings were conducted during 1993 and 1994. The mean species richness per sample was 60 species. The seasonality and the type of environment influenced the ecological attributes of rotifer assemblages, while the presence or absence of aquatic macrophytes did not. Species richness was highest in the lake system and during the months when water levels were low. Multivariate analysis indicates a small group of species associated with the low water-level phase. In contrast, many species were associated with high water levels or increasing water levels. The seasonal variation of hydrological cycle and the type of environment are the most important factors for rotifer structure in natural conditions.
publishDate 2019
dc.date.none.fl_str_mv 2019-01-01
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=S1984-46702019000100305
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702019000100305
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.3897/zoologia.36.e24191
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 Sociedade Brasileira de Zoologia
publisher.none.fl_str_mv Sociedade Brasileira de Zoologia
dc.source.none.fl_str_mv Zoologia (Curitiba) v.36 2019
reponame:Zoologia (Curitiba. Online)
instname:Sociedade Brasileira de Zoologia
instacron:SBZ
instname_str Sociedade Brasileira de Zoologia
instacron_str SBZ
institution SBZ
reponame_str Zoologia (Curitiba. Online)
collection Zoologia (Curitiba. Online)
repository.name.fl_str_mv Zoologia (Curitiba. Online) - Sociedade Brasileira de Zoologia
repository.mail.fl_str_mv sbz@sbzoologia.org.br
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