Paleoenvironment interpretation of a 1760 years B.P. old sediment in a mangrove area of the Bay of Guanabara, using pollen analysis-Reference-Cited by-同舟云学术

Paleoenvironment interpretation of a 1760 years B.P. old sediment in a mangrove area of the Bay of Guanabara, using pollen analysis

Published:2006-06 Issue:2 Volume:78 Page:227-229
ISSN:0001-3765
Container-title:Anais da Academia Brasileira de Ciências
language:
Short-container-title:An. Acad. Bras. Ciênc.

Author:

Barth Ortrud M.¹,São-Thiago Luiz E.U.²,Barros Marcia A.²

Affiliation:

1. Fiocruz, Brasil

2. Universidade Federal do Rio de Janeiro, Brasil

Abstract

A sediment sample was obtained at 122 cm from the top of a drilling core in the Guapimirim mangrove, Bay of Guanabara, and analyzed using pollen analysis. This muddy core reached a sandy ground at 133 cm. 14C datation got the age of 1760 ± 50 years B.P. The most frequent pollen grains were mangrove species of Rhizophora mangle, Laguncularia racemosa and Avicennia schaueriana. "Restinga" and tropical rain forest vegetation was recognized behind the mangrove. After the last sea transgression at 2500 years B.P., the water level lowered to its actual size, allowing the installation of this mangrove.

Publisher

FapUNIFESP (SciELO)

Subject

Multidisciplinary

Link

http://www.scielo.br/pdf/aabc/v78n2/a04v78n2.pdf

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