The influence of sand extraction on fish assemblages in campinarana streams in Cruzeiro do Sul – AC, Brazil
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Data de Publicação: | 2019 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Biotemas (Online) |
Texto Completo: | https://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2019v32n3p73 |
Resumo: | Habitat destruction promoted by sand extraction from streambeds can cause the loss of some species and change the dynamics of fish assemblages. The present study investigated the effect of sand extraction on fish assemblages in campinarana streams in the region of Cruzeiro do Sul, Acre, between June 2017 and August 2018. Six streams were evaluated, including three degraded by sand extraction and three in forested areas. Richness, a Shannon diversity index, equitability and abundance of species were evaluated. To verify differences between these parameters, a Student’s t-test was conducted. NMDS and PERMANOVA were summarized to evaluate the composition of fish species. We collected 705 individuals distributed in 60 fish species. We found a significant difference between the areas regarding richness (t = 11.1, p = 0.0001), abundance (t = 4.5, p = 0.006) and diversity (t = 4.1, p = 0.01). The species composition also varied (Pseudo-F = 3.79, P = 0.01), since 35% of the species were restricted to preserved environments. Thus, it is suggested that the anthropic disturbance in the campinaranas caused the loss of the most sensitive and specialized species, which caused an increase in opportunistic individuals, altering the structure of the assemblages and reducing local diversity. |
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The influence of sand extraction on fish assemblages in campinarana streams in Cruzeiro do Sul – AC, BrazilInfluência da extração de areia sobre a assembleia de peixes em riachos de Campinarana.Habitat destruction promoted by sand extraction from streambeds can cause the loss of some species and change the dynamics of fish assemblages. The present study investigated the effect of sand extraction on fish assemblages in campinarana streams in the region of Cruzeiro do Sul, Acre, between June 2017 and August 2018. Six streams were evaluated, including three degraded by sand extraction and three in forested areas. Richness, a Shannon diversity index, equitability and abundance of species were evaluated. To verify differences between these parameters, a Student’s t-test was conducted. NMDS and PERMANOVA were summarized to evaluate the composition of fish species. We collected 705 individuals distributed in 60 fish species. We found a significant difference between the areas regarding richness (t = 11.1, p = 0.0001), abundance (t = 4.5, p = 0.006) and diversity (t = 4.1, p = 0.01). The species composition also varied (Pseudo-F = 3.79, P = 0.01), since 35% of the species were restricted to preserved environments. Thus, it is suggested that the anthropic disturbance in the campinaranas caused the loss of the most sensitive and specialized species, which caused an increase in opportunistic individuals, altering the structure of the assemblages and reducing local diversity.A destruição de habitats, promovida pela extração de areia de leitos de riachos, pode causar a perda de algumas espécies e a alteração na dinâmica das assembleias de peixes. Assim, o presente estudo investigou o efeito da extração de areia sobre as assembleias de peixes em riachos de Campinarana, localizados na região de Cruzeiro do Sul, Acre, entre junho a agosto de 2017 e 2018. Seis riachos foram avaliados, sendo três degradados (pela extração de areia) e três florestados. Riqueza, diversidade de Shannon, equitabilidade e abundância de espécies foram avaliadas. Para verificar diferenças entre esses parâmetros, foi realizado o teste t de Student. NMDS e PERMANOVA foram sumarizadas para avaliar a composição de espécies de peixes. Foram coletadas 60 espécies de peixes com 705 indivíduos. Houve uma diferença significativa entre as áreas com relação à riqueza (t = 11,1; p = 0,0001), à abundância (t = 4,5; p = 0,006) e à diversidade (t = 4,1; p = 0,01). A composição de espécies também variou (Pseudo-F = 3,79; p = 0,01), onde 35% das espécies foram restritas aos ambientes preservados. Assim, sugere-se que a perturbação antrópica nas campinaranas, causou perda das espécies mais sensíveis e especializadas, permitindo o aumento dos indivíduos oportunistas, alterando a organização das assembleias e reduzindo a diversidade local.Universidade Federal de Santa Catarina2019-08-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2019v32n3p7310.5007/2175-7925.2019v32n3p73Biotemas; v. 32 n. 3 (2019); 73-852175-79250103-1643reponame:Biotemas (Online)instname:Universidade Federal de Santa Catarina (UFSC)instacron:UFSCenghttps://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2019v32n3p73/40666Copyright (c) 2019 Ana Luiza Costa Silva, Lucena Rocha Virgílioinfo:eu-repo/semantics/openAccessSilva, Ana Luiza CostaVirgilio, Lucena Rocha2019-08-21T09:21:41Zoai:periodicos.ufsc.br:article/59949Revistahttp://www.biotemas.ufsc.br/index.htmPUBhttps://periodicos.ufsc.br/index.php/biotemas/oai||carlospinto@ccb.ufsc.br2175-79250103-1643opendoar:2019-08-21T09:21:41Biotemas (Online) - Universidade Federal de Santa Catarina (UFSC)false |
dc.title.none.fl_str_mv |
The influence of sand extraction on fish assemblages in campinarana streams in Cruzeiro do Sul – AC, Brazil Influência da extração de areia sobre a assembleia de peixes em riachos de Campinarana. |
title |
The influence of sand extraction on fish assemblages in campinarana streams in Cruzeiro do Sul – AC, Brazil |
spellingShingle |
The influence of sand extraction on fish assemblages in campinarana streams in Cruzeiro do Sul – AC, Brazil Silva, Ana Luiza Costa |
title_short |
The influence of sand extraction on fish assemblages in campinarana streams in Cruzeiro do Sul – AC, Brazil |
title_full |
The influence of sand extraction on fish assemblages in campinarana streams in Cruzeiro do Sul – AC, Brazil |
title_fullStr |
The influence of sand extraction on fish assemblages in campinarana streams in Cruzeiro do Sul – AC, Brazil |
title_full_unstemmed |
The influence of sand extraction on fish assemblages in campinarana streams in Cruzeiro do Sul – AC, Brazil |
title_sort |
The influence of sand extraction on fish assemblages in campinarana streams in Cruzeiro do Sul – AC, Brazil |
author |
Silva, Ana Luiza Costa |
author_facet |
Silva, Ana Luiza Costa Virgilio, Lucena Rocha |
author_role |
author |
author2 |
Virgilio, Lucena Rocha |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Silva, Ana Luiza Costa Virgilio, Lucena Rocha |
description |
Habitat destruction promoted by sand extraction from streambeds can cause the loss of some species and change the dynamics of fish assemblages. The present study investigated the effect of sand extraction on fish assemblages in campinarana streams in the region of Cruzeiro do Sul, Acre, between June 2017 and August 2018. Six streams were evaluated, including three degraded by sand extraction and three in forested areas. Richness, a Shannon diversity index, equitability and abundance of species were evaluated. To verify differences between these parameters, a Student’s t-test was conducted. NMDS and PERMANOVA were summarized to evaluate the composition of fish species. We collected 705 individuals distributed in 60 fish species. We found a significant difference between the areas regarding richness (t = 11.1, p = 0.0001), abundance (t = 4.5, p = 0.006) and diversity (t = 4.1, p = 0.01). The species composition also varied (Pseudo-F = 3.79, P = 0.01), since 35% of the species were restricted to preserved environments. Thus, it is suggested that the anthropic disturbance in the campinaranas caused the loss of the most sensitive and specialized species, which caused an increase in opportunistic individuals, altering the structure of the assemblages and reducing local diversity. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-08-20 |
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/2175-7925.2019v32n3p73 10.5007/2175-7925.2019v32n3p73 |
url |
https://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2019v32n3p73 |
identifier_str_mv |
10.5007/2175-7925.2019v32n3p73 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2019v32n3p73/40666 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2019 Ana Luiza Costa Silva, Lucena Rocha Virgílio info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2019 Ana Luiza Costa Silva, Lucena Rocha Virgílio |
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. 32 n. 3 (2019); 73-85 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 |
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1799940554461544448 |