River damming affects seedling communities of a floodplain forest in the Central Amazon
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta Botanica Brasilica |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000100192 |
Resumo: | ABSTRACT The flood pulse of black water rivers in the Amazon basin determines the composition of species along the flood gradient in igapó forests. The Balbina dam, built on the Uatumã River, has altered the flood pulse and caused changes in the floristic composition of adult trees throughout the downstream area. There is a lack of studies on how communities of seedlings in igapó forests respond to changes in the flood pulse. This study investigates the response of seedling communities in the igapó forest downstream the Balbina dam and compares it with two pristine areas. The areas were sampled with transects of 1x25 m within 36 plots (25x25 m) along the flood gradient. Richness and dominance were calculated by simple regression and ordination analyses. The pristine areas had the same pattern of richness, dominance and genera distribution along the flood gradient. However, the affected Uatumã area formed different groups of genera by NMDS analysis, which divided them along the flood gradient with significantly increased dominance of three genera. The insertion of the Balbina dam resulted a loss of lateral and longitudinal connectivity for the Uatumã River, and the alteration to seedling communities may alter the future landscape of downstream igapó forests. |
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River damming affects seedling communities of a floodplain forest in the Central Amazondamsenvironmental stressflood gradientfloodplainhydrologic cycleseedlingstropical riversABSTRACT The flood pulse of black water rivers in the Amazon basin determines the composition of species along the flood gradient in igapó forests. The Balbina dam, built on the Uatumã River, has altered the flood pulse and caused changes in the floristic composition of adult trees throughout the downstream area. There is a lack of studies on how communities of seedlings in igapó forests respond to changes in the flood pulse. This study investigates the response of seedling communities in the igapó forest downstream the Balbina dam and compares it with two pristine areas. The areas were sampled with transects of 1x25 m within 36 plots (25x25 m) along the flood gradient. Richness and dominance were calculated by simple regression and ordination analyses. The pristine areas had the same pattern of richness, dominance and genera distribution along the flood gradient. However, the affected Uatumã area formed different groups of genera by NMDS analysis, which divided them along the flood gradient with significantly increased dominance of three genera. The insertion of the Balbina dam resulted a loss of lateral and longitudinal connectivity for the Uatumã River, and the alteration to seedling communities may alter the future landscape of downstream igapó forests.Sociedade Botânica do Brasil2020-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000100192Acta Botanica Brasilica v.34 n.1 2020reponame:Acta Botanica Brasilicainstname:Sociedade Botânica do Brasil (SBB)instacron:SBB10.1590/0102-33062019abb0263info:eu-repo/semantics/openAccessRocha,Maíra daFeitosa,Yuri OliveiraWittmann,FlorianPiedade,Maria Teresa FernandezResende,Angélica Faria deAssis,Rafael Leandro deeng2020-03-16T00:00:00Zoai:scielo:S0102-33062020000100192Revistahttps://www.scielo.br/j/abb/ONGhttps://old.scielo.br/oai/scielo-oai.phpacta@botanica.org.br||acta@botanica.org.br|| f.a.r.santos@gmail.com1677-941X0102-3306opendoar:2020-03-16T00:00Acta Botanica Brasilica - Sociedade Botânica do Brasil (SBB)false |
dc.title.none.fl_str_mv |
River damming affects seedling communities of a floodplain forest in the Central Amazon |
title |
River damming affects seedling communities of a floodplain forest in the Central Amazon |
spellingShingle |
River damming affects seedling communities of a floodplain forest in the Central Amazon Rocha,Maíra da dams environmental stress flood gradient floodplain hydrologic cycle seedlings tropical rivers |
title_short |
River damming affects seedling communities of a floodplain forest in the Central Amazon |
title_full |
River damming affects seedling communities of a floodplain forest in the Central Amazon |
title_fullStr |
River damming affects seedling communities of a floodplain forest in the Central Amazon |
title_full_unstemmed |
River damming affects seedling communities of a floodplain forest in the Central Amazon |
title_sort |
River damming affects seedling communities of a floodplain forest in the Central Amazon |
author |
Rocha,Maíra da |
author_facet |
Rocha,Maíra da Feitosa,Yuri Oliveira Wittmann,Florian Piedade,Maria Teresa Fernandez Resende,Angélica Faria de Assis,Rafael Leandro de |
author_role |
author |
author2 |
Feitosa,Yuri Oliveira Wittmann,Florian Piedade,Maria Teresa Fernandez Resende,Angélica Faria de Assis,Rafael Leandro de |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Rocha,Maíra da Feitosa,Yuri Oliveira Wittmann,Florian Piedade,Maria Teresa Fernandez Resende,Angélica Faria de Assis,Rafael Leandro de |
dc.subject.por.fl_str_mv |
dams environmental stress flood gradient floodplain hydrologic cycle seedlings tropical rivers |
topic |
dams environmental stress flood gradient floodplain hydrologic cycle seedlings tropical rivers |
description |
ABSTRACT The flood pulse of black water rivers in the Amazon basin determines the composition of species along the flood gradient in igapó forests. The Balbina dam, built on the Uatumã River, has altered the flood pulse and caused changes in the floristic composition of adult trees throughout the downstream area. There is a lack of studies on how communities of seedlings in igapó forests respond to changes in the flood pulse. This study investigates the response of seedling communities in the igapó forest downstream the Balbina dam and compares it with two pristine areas. The areas were sampled with transects of 1x25 m within 36 plots (25x25 m) along the flood gradient. Richness and dominance were calculated by simple regression and ordination analyses. The pristine areas had the same pattern of richness, dominance and genera distribution along the flood gradient. However, the affected Uatumã area formed different groups of genera by NMDS analysis, which divided them along the flood gradient with significantly increased dominance of three genera. The insertion of the Balbina dam resulted a loss of lateral and longitudinal connectivity for the Uatumã River, and the alteration to seedling communities may alter the future landscape of downstream igapó forests. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-03-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000100192 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000100192 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0102-33062019abb0263 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Botânica do Brasil |
publisher.none.fl_str_mv |
Sociedade Botânica do Brasil |
dc.source.none.fl_str_mv |
Acta Botanica Brasilica v.34 n.1 2020 reponame:Acta Botanica Brasilica instname:Sociedade Botânica do Brasil (SBB) instacron:SBB |
instname_str |
Sociedade Botânica do Brasil (SBB) |
instacron_str |
SBB |
institution |
SBB |
reponame_str |
Acta Botanica Brasilica |
collection |
Acta Botanica Brasilica |
repository.name.fl_str_mv |
Acta Botanica Brasilica - Sociedade Botânica do Brasil (SBB) |
repository.mail.fl_str_mv |
acta@botanica.org.br||acta@botanica.org.br|| f.a.r.santos@gmail.com |
_version_ |
1752126663762640896 |