Fish species diversity in headwaters streams of Paraguay and Paraná Basins

Fish species diversity in headwaters streams of Paraguay and Paraná Basins

The influence of spatial, temporal and environmental factors on fish species diversity in headwater streams in Paraguay and Paraná basins, Brazil was examined. A total of 4,605 individuals were sampled, distributed in 60 species. The sampled streams in Paraná basin presented a larger total species richness (42) than Paraguay streams (40). However the estimated richness was larger in Paraguay basin (53) than Paraná streams (50). The streams of Paraná basin had a greater mean species richness and evenness, while more individuals per sample were found in the Paraguay basin. Difference between the sub-basins were found in the Paraguay basin, while for the basin of Paraná, richness and evenness vary significantly between the sub-basins, but the number of individuals varied seasonally. The most important environmental factors to species diversity and abundance were altitude, water temperature, stream width and stream depth for both the basins.

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Main Authors: Súarez,Yzel Rondon, Valério,Sabrina Bigatão, Tondado,Karina Keyla, Florentino,Alexandro Cezar, Felipe,Thiago Rota Alves, Ximenes,Lidiani Queli Lubas, Lourenço,Luzia da Silva
Format: Digital revista
Language:English
Published: Instituto de Tecnologia do Paraná - Tecpar 2007
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000700014
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spelling oai:scielo:S1516-891320070007000142008-03-03Fish species diversity in headwaters streams of Paraguay and Paraná BasinsSúarez,Yzel RondonValério,Sabrina BigatãoTondado,Karina KeylaFlorentino,Alexandro CezarFelipe,Thiago Rota AlvesXimenes,Lidiani Queli LubasLourenço,Luzia da Silva Community ecology fish diversity streams Paraguay Basin Paraná Basin The influence of spatial, temporal and environmental factors on fish species diversity in headwater streams in Paraguay and Paraná basins, Brazil was examined. A total of 4,605 individuals were sampled, distributed in 60 species. The sampled streams in Paraná basin presented a larger total species richness (42) than Paraguay streams (40). However the estimated richness was larger in Paraguay basin (53) than Paraná streams (50). The streams of Paraná basin had a greater mean species richness and evenness, while more individuals per sample were found in the Paraguay basin. Difference between the sub-basins were found in the Paraguay basin, while for the basin of Paraná, richness and evenness vary significantly between the sub-basins, but the number of individuals varied seasonally. The most important environmental factors to species diversity and abundance were altitude, water temperature, stream width and stream depth for both the basins.info:eu-repo/semantics/openAccessInstituto de Tecnologia do Paraná - TecparBrazilian Archives of Biology and Technology v.50 n.6 20072007-11-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000700014en10.1590/S1516-89132007000700014
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Súarez,Yzel Rondon
Valério,Sabrina Bigatão
Tondado,Karina Keyla
Florentino,Alexandro Cezar
Felipe,Thiago Rota Alves
Ximenes,Lidiani Queli Lubas
Lourenço,Luzia da Silva
spellingShingle Súarez,Yzel Rondon
Valério,Sabrina Bigatão
Tondado,Karina Keyla
Florentino,Alexandro Cezar
Felipe,Thiago Rota Alves
Ximenes,Lidiani Queli Lubas
Lourenço,Luzia da Silva
Fish species diversity in headwaters streams of Paraguay and Paraná Basins
author_facet Súarez,Yzel Rondon
Valério,Sabrina Bigatão
Tondado,Karina Keyla
Florentino,Alexandro Cezar
Felipe,Thiago Rota Alves
Ximenes,Lidiani Queli Lubas
Lourenço,Luzia da Silva
author_sort Súarez,Yzel Rondon
title Fish species diversity in headwaters streams of Paraguay and Paraná Basins
title_short Fish species diversity in headwaters streams of Paraguay and Paraná Basins
title_full Fish species diversity in headwaters streams of Paraguay and Paraná Basins
title_fullStr Fish species diversity in headwaters streams of Paraguay and Paraná Basins
title_full_unstemmed Fish species diversity in headwaters streams of Paraguay and Paraná Basins
title_sort fish species diversity in headwaters streams of paraguay and paraná basins
description The influence of spatial, temporal and environmental factors on fish species diversity in headwater streams in Paraguay and Paraná basins, Brazil was examined. A total of 4,605 individuals were sampled, distributed in 60 species. The sampled streams in Paraná basin presented a larger total species richness (42) than Paraguay streams (40). However the estimated richness was larger in Paraguay basin (53) than Paraná streams (50). The streams of Paraná basin had a greater mean species richness and evenness, while more individuals per sample were found in the Paraguay basin. Difference between the sub-basins were found in the Paraguay basin, while for the basin of Paraná, richness and evenness vary significantly between the sub-basins, but the number of individuals varied seasonally. The most important environmental factors to species diversity and abundance were altitude, water temperature, stream width and stream depth for both the basins.
publisher Instituto de Tecnologia do Paraná - Tecpar
publishDate 2007
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000700014
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