Late Holocene Palynological Record in Sediments of the Piraquê-Açu River Estuary, Espírito Santo, Brazil

Detalhes bibliográficos
Autor(a) principal: Freitas, Alex da Silva de
Data de Publicação: 2017
Outros Autores: Barreto, Cintia Ferreira, Barth, Ortrud Monika, Bastos, Alex Cardoso, Baptista-Neto, José Antônio
Tipo de documento: Artigo
Idioma: por
Título da fonte: Anuário do Instituto de Geociências (Online)
Texto Completo: https://revistas.ufrj.br/index.php/aigeo/article/view/7849
Resumo: The Piraquê-Acu river is located at the municipality of Aracruz, 83 km north of Vitória city, Espírito Santo State, Brazil. Palynological analysis was performed based on one core (PA20) collected at coordinates 19°56'13.63"S and 40°10'29.50"W and approximately 110 cm long. The main purpose of this study was to recognise and interpret the vegetation dynamics in the region around the collection site during last 1700 cal. yrs BP for future investigations. The core was sampled at each 10 cm and the samples were submitted to standard palynological processes. One tablet of exotic spore Lycopodium clavatum was added to calculate palynomorph concentration. The material of four levels has been dated obtaining the oldest age of 1758 À 68 cal. yrs BP at an approximately 105 cm depth. The core analysis indicates a strong presence of mangrove vegetation, mainly characterized by the Rhizophora pollen type. The Alluvial Community and the Ombrophilous Forest vegetation were well represented also experiencing minor fluctuations. The increase of this elements in 10 cm depth may be associated with the human activity caused by the arrival of immigrants into the estuary area. The core top presented Eucalyptus pollen type, being related to the started expansion of large scale planting species of this genus in the Espírito Santo State.
id UFRJ-21_b19c3181cea6788a1fca0e5e6964d1bc
oai_identifier_str oai:www.revistas.ufrj.br:article/7849
network_acronym_str UFRJ-21
network_name_str Anuário do Instituto de Geociências (Online)
repository_id_str
spelling Late Holocene Palynological Record in Sediments of the Piraquê-Açu River Estuary, Espírito Santo, BrazilRegistro Palinológico do Holoceno Tardio em Sedimentos Estuarinos do Rio Piraquê-Açu, Espírito Santo, BrasilPalynological analysis; Fluvial sediments; Late HoloceneAnálise palinológica; Sedimento fluvial; Holoceno tardioThe Piraquê-Acu river is located at the municipality of Aracruz, 83 km north of Vitória city, Espírito Santo State, Brazil. Palynological analysis was performed based on one core (PA20) collected at coordinates 19°56'13.63"S and 40°10'29.50"W and approximately 110 cm long. The main purpose of this study was to recognise and interpret the vegetation dynamics in the region around the collection site during last 1700 cal. yrs BP for future investigations. The core was sampled at each 10 cm and the samples were submitted to standard palynological processes. One tablet of exotic spore Lycopodium clavatum was added to calculate palynomorph concentration. The material of four levels has been dated obtaining the oldest age of 1758 À 68 cal. yrs BP at an approximately 105 cm depth. The core analysis indicates a strong presence of mangrove vegetation, mainly characterized by the Rhizophora pollen type. The Alluvial Community and the Ombrophilous Forest vegetation were well represented also experiencing minor fluctuations. The increase of this elements in 10 cm depth may be associated with the human activity caused by the arrival of immigrants into the estuary area. The core top presented Eucalyptus pollen type, being related to the started expansion of large scale planting species of this genus in the Espírito Santo State.O rio Piraquê-Açu está localizado no município de Aracruz, 83 km a norte da cidade de Vitória, Estado do Espírito Santo, Brasil. No presente trabalho foram realizadas análises palinológicas a partir de um testemunho de sondagem (PA20) coletado nas coordenadas 19°56'13.63"S e 40°10'29.50"W com cerca de 110 cm de profundidade. O principal objetivo do estudo foi de reconhecer e interpretar a dinâmica vegetacional na região do entorno do local de coleta ocorrida nos últimos 1700 cal. anos AP, auxiliando estudos futuros. O testemunho foi subamostrado a cada 10 cm sendo as amostras submetidas ao processamento palinológico padrão. Foi inserida uma pastilha do esporo exótico Lycopodium clavatum para o cálculo da concentração dos palinomorfos. O material foi datado em quatro profundidades tendo a idade mais antiga cerca de 1758À68 cal. anos AP em 105 cm. A análise do testemunho indicou uma presença marcante da vegetação de Mangue, caracterizado principalmente pela presença do tipo polínico Rizophora. A Comunidade Aluvial e a Floresta Ombrófila também estiveram bem representadas sofrendo pequenas flutuações ao longo do testemunho. Foi observado o aumento da Comunidade Aluvial e a queda da Floresta Ombrófila nos últimos 10 cm de profundidade, o que pode estar associado a uma maior atividade antrópica causada pela chegada de imigrantes ao entorno do estuário. No topo do testemunho observa-se a presença do tipo polínico Eucalyptus, estando relacionado ao início da expansão da plantação de espécies deste gênero em larga escala no Estado do Espírito Santo.Universidade Federal do Rio de Janeiro2017-02-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://revistas.ufrj.br/index.php/aigeo/article/view/784910.11137/2015_1_107_115Anuário do Instituto de Geociências; Vol 38, No 1 (2015); 107-115Anuário do Instituto de Geociências; Vol 38, No 1 (2015); 107-1151982-39080101-9759reponame:Anuário do Instituto de Geociências (Online)instname:Universidade Federal do Rio de Janeiro (UFRJ)instacron:UFRJporhttps://revistas.ufrj.br/index.php/aigeo/article/view/7849/6330Copyright (c) 2016 Anuário do Instituto de Geociênciashttp://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessFreitas, Alex da Silva deBarreto, Cintia FerreiraBarth, Ortrud MonikaBastos, Alex CardosoBaptista-Neto, José Antônio2017-02-15T17:59:16Zoai:www.revistas.ufrj.br:article/7849Revistahttps://revistas.ufrj.br/index.php/aigeo/indexPUBhttps://revistas.ufrj.br/index.php/aigeo/oaianuario@igeo.ufrj.br||1982-39080101-9759opendoar:2017-02-15T17:59:16Anuário do Instituto de Geociências (Online) - Universidade Federal do Rio de Janeiro (UFRJ)false
dc.title.none.fl_str_mv Late Holocene Palynological Record in Sediments of the Piraquê-Açu River Estuary, Espírito Santo, Brazil
Registro Palinológico do Holoceno Tardio em Sedimentos Estuarinos do Rio Piraquê-Açu, Espírito Santo, Brasil
title Late Holocene Palynological Record in Sediments of the Piraquê-Açu River Estuary, Espírito Santo, Brazil
spellingShingle Late Holocene Palynological Record in Sediments of the Piraquê-Açu River Estuary, Espírito Santo, Brazil
Freitas, Alex da Silva de
Palynological analysis; Fluvial sediments; Late Holocene
Análise palinológica; Sedimento fluvial; Holoceno tardio
title_short Late Holocene Palynological Record in Sediments of the Piraquê-Açu River Estuary, Espírito Santo, Brazil
title_full Late Holocene Palynological Record in Sediments of the Piraquê-Açu River Estuary, Espírito Santo, Brazil
title_fullStr Late Holocene Palynological Record in Sediments of the Piraquê-Açu River Estuary, Espírito Santo, Brazil
title_full_unstemmed Late Holocene Palynological Record in Sediments of the Piraquê-Açu River Estuary, Espírito Santo, Brazil
title_sort Late Holocene Palynological Record in Sediments of the Piraquê-Açu River Estuary, Espírito Santo, Brazil
author Freitas, Alex da Silva de
author_facet Freitas, Alex da Silva de
Barreto, Cintia Ferreira
Barth, Ortrud Monika
Bastos, Alex Cardoso
Baptista-Neto, José Antônio
author_role author
author2 Barreto, Cintia Ferreira
Barth, Ortrud Monika
Bastos, Alex Cardoso
Baptista-Neto, José Antônio
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Freitas, Alex da Silva de
Barreto, Cintia Ferreira
Barth, Ortrud Monika
Bastos, Alex Cardoso
Baptista-Neto, José Antônio
dc.subject.por.fl_str_mv Palynological analysis; Fluvial sediments; Late Holocene
Análise palinológica; Sedimento fluvial; Holoceno tardio
topic Palynological analysis; Fluvial sediments; Late Holocene
Análise palinológica; Sedimento fluvial; Holoceno tardio
description The Piraquê-Acu river is located at the municipality of Aracruz, 83 km north of Vitória city, Espírito Santo State, Brazil. Palynological analysis was performed based on one core (PA20) collected at coordinates 19°56'13.63"S and 40°10'29.50"W and approximately 110 cm long. The main purpose of this study was to recognise and interpret the vegetation dynamics in the region around the collection site during last 1700 cal. yrs BP for future investigations. The core was sampled at each 10 cm and the samples were submitted to standard palynological processes. One tablet of exotic spore Lycopodium clavatum was added to calculate palynomorph concentration. The material of four levels has been dated obtaining the oldest age of 1758 À 68 cal. yrs BP at an approximately 105 cm depth. The core analysis indicates a strong presence of mangrove vegetation, mainly characterized by the Rhizophora pollen type. The Alluvial Community and the Ombrophilous Forest vegetation were well represented also experiencing minor fluctuations. The increase of this elements in 10 cm depth may be associated with the human activity caused by the arrival of immigrants into the estuary area. The core top presented Eucalyptus pollen type, being related to the started expansion of large scale planting species of this genus in the Espírito Santo State.
publishDate 2017
dc.date.none.fl_str_mv 2017-02-15
dc.type.none.fl_str_mv

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://revistas.ufrj.br/index.php/aigeo/article/view/7849
10.11137/2015_1_107_115
url https://revistas.ufrj.br/index.php/aigeo/article/view/7849
identifier_str_mv 10.11137/2015_1_107_115
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://revistas.ufrj.br/index.php/aigeo/article/view/7849/6330
dc.rights.driver.fl_str_mv Copyright (c) 2016 Anuário do Instituto de Geociências
http://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2016 Anuário do Instituto de Geociências
http://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal do Rio de Janeiro
publisher.none.fl_str_mv Universidade Federal do Rio de Janeiro
dc.source.none.fl_str_mv Anuário do Instituto de Geociências; Vol 38, No 1 (2015); 107-115
Anuário do Instituto de Geociências; Vol 38, No 1 (2015); 107-115
1982-3908
0101-9759
reponame:Anuário do Instituto de Geociências (Online)
instname:Universidade Federal do Rio de Janeiro (UFRJ)
instacron:UFRJ
instname_str Universidade Federal do Rio de Janeiro (UFRJ)
instacron_str UFRJ
institution UFRJ
reponame_str Anuário do Instituto de Geociências (Online)
collection Anuário do Instituto de Geociências (Online)
repository.name.fl_str_mv Anuário do Instituto de Geociências (Online) - Universidade Federal do Rio de Janeiro (UFRJ)
repository.mail.fl_str_mv anuario@igeo.ufrj.br||
_version_ 1797053539769384960

Registros relacionados