Contribution of different mesohabitats to the maintenance of fish richness and diversity in the lower Preto River
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta Scientiarum Biological Sciences |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/27356 |
Resumo: | The presence of different mesohabitats in freshwater systems can support higher local and regional fish richness. Thus, their suppression by dam-building represents a real threat to aquatic biodiversity. Our aims were: (1) to survey the fish fauna in two different mesohabitats in lower Preto River: a riffle indirectly threatened by dam-building and a run with different physical structure; and (2) to analyze and compare the fish community structure in these different mesohabitats. Six samplings were made during one year in two reaches (R1 and R2). We conducted a ‘one way’ ANOSIM to assess the differences in fish community structure between R1 and R2. Fifty-three species were recorded, with the occurrence of Aphyocheirodon hemigrammus and Myleus tiete, two Brazilian threatened species. The highest richness was observed in R2. Nevertheless, diversity and evenness were significantly higher in R1. Rheophilic species were more common and restricted to R1 and species typical of lentic environments were predominant in R2. Fish community structure was different between R1 and R2 (R = 1, p = 0.02). Our results demonstrated that mesohabitats mosaic through rivers can contribute to the maintenance of a diverse fish assemblage. |
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Contribution of different mesohabitats to the maintenance of fish richness and diversity in the lower Preto Riverconservationdam-buildingichthyofaunarifflesthreatened speciesEcologiaThe presence of different mesohabitats in freshwater systems can support higher local and regional fish richness. Thus, their suppression by dam-building represents a real threat to aquatic biodiversity. Our aims were: (1) to survey the fish fauna in two different mesohabitats in lower Preto River: a riffle indirectly threatened by dam-building and a run with different physical structure; and (2) to analyze and compare the fish community structure in these different mesohabitats. Six samplings were made during one year in two reaches (R1 and R2). We conducted a ‘one way’ ANOSIM to assess the differences in fish community structure between R1 and R2. Fifty-three species were recorded, with the occurrence of Aphyocheirodon hemigrammus and Myleus tiete, two Brazilian threatened species. The highest richness was observed in R2. Nevertheless, diversity and evenness were significantly higher in R1. Rheophilic species were more common and restricted to R1 and species typical of lentic environments were predominant in R2. Fish community structure was different between R1 and R2 (R = 1, p = 0.02). Our results demonstrated that mesohabitats mosaic through rivers can contribute to the maintenance of a diverse fish assemblage. Universidade Estadual De Maringá2015-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2735610.4025/actascibiolsci.v37i3.27356Acta Scientiarum. Biological Sciences; Vol 37 No 3 (2015); 301-308Acta Scientiarum. Biological Sciences; v. 37 n. 3 (2015); 301-3081807-863X1679-9283reponame:Acta Scientiarum Biological Sciencesinstname:Universidade Estadual de Maringá (UEM)instacron:UEMenghttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/27356/pdf_67Zeni, Jaquelini OliveiraSantos, Ana CláudiaCarvalho, Fernando Rogérioinfo:eu-repo/semantics/openAccess2022-02-17T22:01:23Zoai:periodicos.uem.br/ojs:article/27356Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/oai||actabiol@uem.br1807-863X1679-9283opendoar:2022-02-17T22:01:23Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Contribution of different mesohabitats to the maintenance of fish richness and diversity in the lower Preto River |
title |
Contribution of different mesohabitats to the maintenance of fish richness and diversity in the lower Preto River |
spellingShingle |
Contribution of different mesohabitats to the maintenance of fish richness and diversity in the lower Preto River Zeni, Jaquelini Oliveira conservation dam-building ichthyofauna riffles threatened species Ecologia |
title_short |
Contribution of different mesohabitats to the maintenance of fish richness and diversity in the lower Preto River |
title_full |
Contribution of different mesohabitats to the maintenance of fish richness and diversity in the lower Preto River |
title_fullStr |
Contribution of different mesohabitats to the maintenance of fish richness and diversity in the lower Preto River |
title_full_unstemmed |
Contribution of different mesohabitats to the maintenance of fish richness and diversity in the lower Preto River |
title_sort |
Contribution of different mesohabitats to the maintenance of fish richness and diversity in the lower Preto River |
author |
Zeni, Jaquelini Oliveira |
author_facet |
Zeni, Jaquelini Oliveira Santos, Ana Cláudia Carvalho, Fernando Rogério |
author_role |
author |
author2 |
Santos, Ana Cláudia Carvalho, Fernando Rogério |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Zeni, Jaquelini Oliveira Santos, Ana Cláudia Carvalho, Fernando Rogério |
dc.subject.por.fl_str_mv |
conservation dam-building ichthyofauna riffles threatened species Ecologia |
topic |
conservation dam-building ichthyofauna riffles threatened species Ecologia |
description |
The presence of different mesohabitats in freshwater systems can support higher local and regional fish richness. Thus, their suppression by dam-building represents a real threat to aquatic biodiversity. Our aims were: (1) to survey the fish fauna in two different mesohabitats in lower Preto River: a riffle indirectly threatened by dam-building and a run with different physical structure; and (2) to analyze and compare the fish community structure in these different mesohabitats. Six samplings were made during one year in two reaches (R1 and R2). We conducted a ‘one way’ ANOSIM to assess the differences in fish community structure between R1 and R2. Fifty-three species were recorded, with the occurrence of Aphyocheirodon hemigrammus and Myleus tiete, two Brazilian threatened species. The highest richness was observed in R2. Nevertheless, diversity and evenness were significantly higher in R1. Rheophilic species were more common and restricted to R1 and species typical of lentic environments were predominant in R2. Fish community structure was different between R1 and R2 (R = 1, p = 0.02). Our results demonstrated that mesohabitats mosaic through rivers can contribute to the maintenance of a diverse fish assemblage. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-07-01 |
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 |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/27356 10.4025/actascibiolsci.v37i3.27356 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/27356 |
identifier_str_mv |
10.4025/actascibiolsci.v37i3.27356 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/27356/pdf_67 |
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 Estadual De Maringá |
publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Biological Sciences; Vol 37 No 3 (2015); 301-308 Acta Scientiarum. Biological Sciences; v. 37 n. 3 (2015); 301-308 1807-863X 1679-9283 reponame:Acta Scientiarum Biological Sciences instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum Biological Sciences |
collection |
Acta Scientiarum Biological Sciences |
repository.name.fl_str_mv |
Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
||actabiol@uem.br |
_version_ |
1799317396359479296 |