Please use this identifier to cite or link to this item: https://www.arca.fiocruz.br/handle/icict/29033
Title: Pollen analysis of Holocene sediments from the Poço das Antas National Biological Reserve, Silva Jardim, Rio de Janeiro, Brazil
Authors: Coelho, Luciane G.
Barth, Ortrud Monika
Araujo, Dorothy S. D. de
Affilliation: Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis. Coordenação Geral de Petróleo e Gás. Rio de Janeiro, RJ, Brasil / Universidade Federal do Rio de Janeiro. Instituto de Biologia. Departamento de Botânica. Laboratório de Palinologia. Rio de Janeiro, RJ, Brasil.
Universidade Federal do Rio de Janeiro. Instituto de Biologia. Departamento de Botânica. Laboratório de Palinologia. Rio de Janeiro, RJ, Brasil / Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Virologia. Laboratório de Ultra-estrutura viral. Rio de Janeiro, RJ, Brasil
Universidade Federal do Rio de Janeiro. Centro de Ciências da Saúde. Instituto de Biologia. Departamento de Ecologia. Laboratório de Ecologia Vegetal. Rio de Janeiro, RJ, Brasil.
Abstract: The Poço das Antas National Biological Reserve is located in Rio de Janeiro State, southeast Brazil. This paper presents information on past environmental characteristics of the area through pollen analysis. Two sedimentary columns were collected and five samples were selected for radiocarbon dating. The following ages of the columns from bottom to top were detected: column 1 – 1.20-1.16 m: 6080 ±40 years BP, 0.775-0.735 m: 4090 ±40 years BP, 0.385-0.345 m: 1880 ± 80 years BP; column 2 – 1.22-1.18 m: 3520 ± 40 years BP, 0.23-0.19 m: 1810 ± 40 years BP. Three samples from column 1 and two samples from column 2 were selected for pollen analysis: 1.20 m, 0.77 m and 0.37 m of column 1 and 1.22 m and 0.21 m of column 2. Chemical treatment followed standard methodology. The palynological analysis shows that around 6080 years BP the study area was dominated by a rain forest and from around 4090 years BP the vegetation changed to a fragmented forest, restricted to low hills and surrounded by an open area of grassland and pioneer plants, swamps and peat areas. The pollen assemblage of the samples 3520, 1880 and 1810 years BP suggest the permanence of this kind of vegetation between 4000 years BP and the actual.
Keywords: Palynology
paleo-environment
Holocene
Brazil
Rio de janeiro
Poço das Antas National Biological Reserve
keywords: Palinologia
Holoceno
Brasil
paleo-ambiente
Reserva Biológica Nacional do Poço das Antas
Issue Date: 2008
Publisher: Academia Brasileira de Ciências
Citation: COELHO, Luciane G. et al. Pollen analysis of Holocene sediments from the Poço das Antas National Biological Reserve, Silva Jardim, Rio de Janeiro, Brazil. Anais da Academia Brasileira de Ciências, v. 80, n.3, p.531-541, 2008.
ISSN: 0001-3765
Copyright: open access
Appears in Collections:IOC - Artigos de Periódicos

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