Rotifers of the upper Paraná River floodplain: additions to the checklist

Rotifers present a high diversity in freshwater ecosystems. This study registered 11 genera and 42 species, new records for the Upper Paraná River floodplain. These results showed an increase in rotifer diversity in this ecosystem from 184 to 230 species. Among them some were registered only in the...

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Main Authors: M. Jr Serafim, C. C. Bonecker, D. C. Rossa, F. A. Lansac-Tôha, C. L. Costa
Format: Article
Language:English
Published: Instituto Internacional de Ecologia
Series:Brazilian Journal of Biology
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842003000200005&lng=en&tlng=en
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author M. Jr Serafim
C. C. Bonecker
D. C. Rossa
F. A. Lansac-Tôha
C. L. Costa
author_facet M. Jr Serafim
C. C. Bonecker
D. C. Rossa
F. A. Lansac-Tôha
C. L. Costa
author_sort M. Jr Serafim
collection DOAJ
description Rotifers present a high diversity in freshwater ecosystems. This study registered 11 genera and 42 species, new records for the Upper Paraná River floodplain. These results showed an increase in rotifer diversity in this ecosystem from 184 to 230 species. Among them some were registered only in the rivers and others in the lagoons. Thirty-seven species occurred in the littoral zone and 34 species in the pelagic; 3 species were registered only in the former zone and 2 species only in the latter. The lagoons presented the greatest richness, probably because of the greater stability, low current velocity, and the extensive aquatic macrophyte banks in the littoral zone of these environments as compared to those of the rivers. The highest number of species in the littoral habitats occurred due to the greater influence of shoreline vegetation, which allows greater habitat diversification. This fact contributed to the occurrence of non-planktonic species in the zooplankton samples.
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spelling doaj.art-c21918e0da2d4a72b38fac6594aefad32022-12-22T00:19:03ZengInstituto Internacional de EcologiaBrazilian Journal of Biology1678-437563220721210.1590/S1519-69842003000200005S1519-69842003000200005Rotifers of the upper Paraná River floodplain: additions to the checklistM. Jr Serafim0C. C. Bonecker1D. C. Rossa2F. A. Lansac-Tôha3C. L. Costa4Universidade Estadual de MaringáUniversidade Estadual de MaringáUniversidade Estadual de MaringáUniversidade Estadual de MaringáUniversidade Estadual de MaringáRotifers present a high diversity in freshwater ecosystems. This study registered 11 genera and 42 species, new records for the Upper Paraná River floodplain. These results showed an increase in rotifer diversity in this ecosystem from 184 to 230 species. Among them some were registered only in the rivers and others in the lagoons. Thirty-seven species occurred in the littoral zone and 34 species in the pelagic; 3 species were registered only in the former zone and 2 species only in the latter. The lagoons presented the greatest richness, probably because of the greater stability, low current velocity, and the extensive aquatic macrophyte banks in the littoral zone of these environments as compared to those of the rivers. The highest number of species in the littoral habitats occurred due to the greater influence of shoreline vegetation, which allows greater habitat diversification. This fact contributed to the occurrence of non-planktonic species in the zooplankton samples.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842003000200005&lng=en&tlng=enrotifersfloodplainrichnessnew recordsParaná river
spellingShingle M. Jr Serafim
C. C. Bonecker
D. C. Rossa
F. A. Lansac-Tôha
C. L. Costa
Rotifers of the upper Paraná River floodplain: additions to the checklist
Brazilian Journal of Biology
rotifers
floodplain
richness
new records
Paraná river
title Rotifers of the upper Paraná River floodplain: additions to the checklist
title_full Rotifers of the upper Paraná River floodplain: additions to the checklist
title_fullStr Rotifers of the upper Paraná River floodplain: additions to the checklist
title_full_unstemmed Rotifers of the upper Paraná River floodplain: additions to the checklist
title_short Rotifers of the upper Paraná River floodplain: additions to the checklist
title_sort rotifers of the upper parana river floodplain additions to the checklist
topic rotifers
floodplain
richness
new records
Paraná river
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842003000200005&lng=en&tlng=en
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