Fish diversity from tributaries of the Chavantes Reservoir, upper Paraná River basin, PR
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Biotemas (Online) |
Texto Completo: | https://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2016v29n2p33 |
Resumo: | Distribution and abundance of stream fish species can be influenced by environmental characteristics related to the aquatic environment and its margins. The objective of this study was to inventory the ichthyofauna of the Cruz, Taquaruçu, and Taquaruçu II streams, in the Paranapanema River basin, and to analyze the diversity parameters and associate them with abiotic variables. A total of 4,956 specimens were collected, in 27 species, with a predominance of Characiformes and Siluriformes. The greater width, depth, and the riparian forest are the environmental variables that best explain the higher diversity of species in the Taquaruçu II stream, while the species dominance observed in the Cruz and Taquaruçu streams may reflect anthropogenic impacts, such as high degree of erosion. Hydrological connectivity could be related to the greater similarity in species composition between the Cruz and Taquaruçu streams. Electrical conductivity and width of the streams were the abiotic variables that correlated the most with the abundance and diversity of species in the sampled streams. The results of this study demonstrate the ecological importance of conserving aquatic ecosystems to maintain fish diversity, in addition to showing the effect of anthropogenic impacts on the ichthyofauna. |
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Fish diversity from tributaries of the Chavantes Reservoir, upper Paraná River basin, PRDiversidade de peixes de tributários do reservatório de Chavantes, PR, bacia do alto rio ParanáDistribution and abundance of stream fish species can be influenced by environmental characteristics related to the aquatic environment and its margins. The objective of this study was to inventory the ichthyofauna of the Cruz, Taquaruçu, and Taquaruçu II streams, in the Paranapanema River basin, and to analyze the diversity parameters and associate them with abiotic variables. A total of 4,956 specimens were collected, in 27 species, with a predominance of Characiformes and Siluriformes. The greater width, depth, and the riparian forest are the environmental variables that best explain the higher diversity of species in the Taquaruçu II stream, while the species dominance observed in the Cruz and Taquaruçu streams may reflect anthropogenic impacts, such as high degree of erosion. Hydrological connectivity could be related to the greater similarity in species composition between the Cruz and Taquaruçu streams. Electrical conductivity and width of the streams were the abiotic variables that correlated the most with the abundance and diversity of species in the sampled streams. The results of this study demonstrate the ecological importance of conserving aquatic ecosystems to maintain fish diversity, in addition to showing the effect of anthropogenic impacts on the ichthyofauna.A distribuição e abundância das espécies de peixes de riacho podem ser influenciadas por características ambientais relacionadas ao meio aquático e às suas margens. O objetivo do presente trabalho foi inventariar a fauna de peixes dos riachos da Cruz, Taquaruçu e Taquaruçu II, localizados na bacia do rio Paranapanema, analisando parâmetros de diversidade da ictiofauna e associando-os com variáveis abióticas. Foram coletados 4.956 exemplares, distribuídos em 27 espécies, com predominância de Characiformes e Siluriformes. A largura, a profundidade e a floresta ripária foram as variáveis ambientais que melhor explicaram a diversidade de espécies encontrada no riacho Taquaruçu II, enquanto a dominância de espécies nos riachos da Cruz e Taquaruçu pode refletir os impactos antrópicos presentes nestes ambientes, como alto grau de erosão das margens. A maior similaridade da ictiofauna entre os riachos da Cruz e Taquaruçu pode estar relacionada com suas conectividades hidrológicas. A condutividade elétrica e a largura dos riachos foram as variáveis abióticas que mais se correlacionaram com a abundância e diversidade de espécies nos riachos amostrados. Os resultados do presente estudo demonstram a importância da conservação dos ecossistemas aquáticos para a manutenção da diversidade de peixes, além de alertar para o efeito de impactos antropogênicos sobre a ictiofauna.Universidade Federal de Santa Catarina2016-05-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2016v29n2p3310.5007/2175-7925.2016v29n2p33Biotemas; v. 29 n. 2 (2016); 33-432175-79250103-1643reponame:Biotemas (Online)instname:Universidade Federal de Santa Catarina (UFSC)instacron:UFSCporhttps://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2016v29n2p33/31669Copyright (c) 2016 Rafael Rogério Rosa, Dyego Leonardo Ferraz Caetano, Sybelle Bellay, Verônica Rodrigues de Moraes, Fernando Emmanuel Gonçalves Vieirainfo:eu-repo/semantics/openAccessRosa, Rafael RogérioCaetano, Dyego Leonardo FerrazBellay, SybelleMoraes, Verônica Rodrigues deVieira, Fernando Emmanuel Gonçalves2017-10-18T18:55:30Zoai:periodicos.ufsc.br:article/39036Revistahttp://www.biotemas.ufsc.br/index.htmPUBhttps://periodicos.ufsc.br/index.php/biotemas/oai||carlospinto@ccb.ufsc.br2175-79250103-1643opendoar:2017-10-18T18:55:30Biotemas (Online) - Universidade Federal de Santa Catarina (UFSC)false |
dc.title.none.fl_str_mv |
Fish diversity from tributaries of the Chavantes Reservoir, upper Paraná River basin, PR Diversidade de peixes de tributários do reservatório de Chavantes, PR, bacia do alto rio Paraná |
title |
Fish diversity from tributaries of the Chavantes Reservoir, upper Paraná River basin, PR |
spellingShingle |
Fish diversity from tributaries of the Chavantes Reservoir, upper Paraná River basin, PR Rosa, Rafael Rogério |
title_short |
Fish diversity from tributaries of the Chavantes Reservoir, upper Paraná River basin, PR |
title_full |
Fish diversity from tributaries of the Chavantes Reservoir, upper Paraná River basin, PR |
title_fullStr |
Fish diversity from tributaries of the Chavantes Reservoir, upper Paraná River basin, PR |
title_full_unstemmed |
Fish diversity from tributaries of the Chavantes Reservoir, upper Paraná River basin, PR |
title_sort |
Fish diversity from tributaries of the Chavantes Reservoir, upper Paraná River basin, PR |
author |
Rosa, Rafael Rogério |
author_facet |
Rosa, Rafael Rogério Caetano, Dyego Leonardo Ferraz Bellay, Sybelle Moraes, Verônica Rodrigues de Vieira, Fernando Emmanuel Gonçalves |
author_role |
author |
author2 |
Caetano, Dyego Leonardo Ferraz Bellay, Sybelle Moraes, Verônica Rodrigues de Vieira, Fernando Emmanuel Gonçalves |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Rosa, Rafael Rogério Caetano, Dyego Leonardo Ferraz Bellay, Sybelle Moraes, Verônica Rodrigues de Vieira, Fernando Emmanuel Gonçalves |
description |
Distribution and abundance of stream fish species can be influenced by environmental characteristics related to the aquatic environment and its margins. The objective of this study was to inventory the ichthyofauna of the Cruz, Taquaruçu, and Taquaruçu II streams, in the Paranapanema River basin, and to analyze the diversity parameters and associate them with abiotic variables. A total of 4,956 specimens were collected, in 27 species, with a predominance of Characiformes and Siluriformes. The greater width, depth, and the riparian forest are the environmental variables that best explain the higher diversity of species in the Taquaruçu II stream, while the species dominance observed in the Cruz and Taquaruçu streams may reflect anthropogenic impacts, such as high degree of erosion. Hydrological connectivity could be related to the greater similarity in species composition between the Cruz and Taquaruçu streams. Electrical conductivity and width of the streams were the abiotic variables that correlated the most with the abundance and diversity of species in the sampled streams. The results of this study demonstrate the ecological importance of conserving aquatic ecosystems to maintain fish diversity, in addition to showing the effect of anthropogenic impacts on the ichthyofauna. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-05-11 |
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 |
https://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2016v29n2p33 10.5007/2175-7925.2016v29n2p33 |
url |
https://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2016v29n2p33 |
identifier_str_mv |
10.5007/2175-7925.2016v29n2p33 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2016v29n2p33/31669 |
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 Federal de Santa Catarina |
publisher.none.fl_str_mv |
Universidade Federal de Santa Catarina |
dc.source.none.fl_str_mv |
Biotemas; v. 29 n. 2 (2016); 33-43 2175-7925 0103-1643 reponame:Biotemas (Online) instname:Universidade Federal de Santa Catarina (UFSC) instacron:UFSC |
instname_str |
Universidade Federal de Santa Catarina (UFSC) |
instacron_str |
UFSC |
institution |
UFSC |
reponame_str |
Biotemas (Online) |
collection |
Biotemas (Online) |
repository.name.fl_str_mv |
Biotemas (Online) - Universidade Federal de Santa Catarina (UFSC) |
repository.mail.fl_str_mv |
||carlospinto@ccb.ufsc.br |
_version_ |
1799940553886924800 |