Please use this identifier to cite or link to this item: https://www.arca.fiocruz.br/handle/icict/29622
Title: Late holocene palynological record and landscape change from the Piraquê-Açu and Piraquê-Mirim estuarine system, Espírito Santo, Brazil
Authors: Freitas, Alex da Silva
Barreto, Cintia Ferreira
Barth, Ortrud Monika
Bastos, Alex Cardoso
Baptista Neto, José Antonio
Affilliation: Universidade Federal Fluminense. Instituto de Geociências. Departamento de Geologia. Niterói, RJ, Brasil.
Universidade Federal Fluminense. Instituto de Geociências. Departamento de Geologia. Niterói, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ. Brasil.
Universidade Federal do Espírito Santo. Centro de Ciências Humanas e Naturais. Departamento de Ecologia e Recursos Naturais. Vitória, ES, Brasil.
Universidade Federal Fluminense. Instituto de Geociências. Departamento de Geologia. Niterói, RJ, Brasil.
Abstract: The Piraquê-Açu and Piraquê-Mirim estuarine system (PAPMES) is located next to the Aracruz City (19˚ 57' S and 40˚ 9' W), Espírito Santo State, Brazil. Palynological analyses were conducted based on two sediment cores (PA20 and PM1). The main purpose of the present study was to recognize and interpret the vegetation dynamics in the region around the collection site in the last 2000 cal yrs BP. The sediment cores were subsampled at each 10 cm depth. The samples were submitted to standard palynological processes. The PA20 sediment core obtained the oldest age of 1758±68 cal yrs BP at a depth of approximately 105-cm. However, the PM1 sediment core obtained the oldest age of ≈2071±82 cal yrs BP at a depth of 95-cm. The comparative record of the sediment cores demonstrated that palynomorphs deposition were directly influenced by local water circulation. Pollen analysis indicated the striking presence of mangrove vegetation, which is mainly characterised by the Rhizophora pollen type. The other vegetation communities underwent little variation over the studied period. The top sediment layers of both sediment cores are characterized by the presence of exotic pollen grains of Eucalyptus, introduced by humans, and by the decrease of the original vegetation.
Keywords: Holocene
estuarine sediments
palynological analysis
Vegetation
environmental evolution
keywords: Holoceno
Vegetação
Análise palinológica
evolução ambiental
sedimentos estuarinos
Issue Date: 2016
Publisher: Universidade do Estado do Rio de Janeiro
Citation: FREITAS, Alex da Silva: et al. Late Holocene palynoligcal record and landscape change from the Piraquê-Açu and Piraquê-Mirim system, Espírito Santo, Brazil. Journal of Sedimentary Environments,, v.1, n.2, p.171-183, Apr.-June 2016.
DOI: 10.12957/jse.2016.21878
ISSN: 2447-9462
Copyright: open access
Appears in Collections:IOC - Artigos de Periódicos

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