Please use this identifier to cite or link to this item: https://www.arca.fiocruz.br/handle/icict/26074
Title: Palynological evidence of the replacement of the hygrophilous forest by field vegetation during the last 7,000 years B.P. in the northern coast of Rio de Janeiro, Brazil
Authors: Luz, Cynthia F. P. da
Barth, Ortrud Monika
Martin, Louis
Silva, Cleverson G.
Turcq, Bruno J.
Affilliation: Instituto de Botânica. Núcleo de Pesquisa em Palinologia. São Paulo, SP, Brasil / Universidade Federal do Rio de Janeiro, Instituto de Geociências. Departamento de Geologia. Laboratório de Palinologia. Rio de Janeiro, RJ, Brasil.
Universidade Federal do Rio de Janeiro, Instituto de Geociências. Departamento de Geologia. 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.
Institut de Recherche pour le Développment. Centre IRD d’Ile de France. France.
Universidade Federal Fluminense. Instituto de Geociências. Laboratório de Geologia Marinha. Niterói, RJ, Brasil.
Institut de Recherche pour le Développment. Centre IRD d’Ile de France. France.
Abstract: Historians claim that European colonizers of the northern coast of Rio de Janeiro State found vast herbaceous fields when arrived in this region. Hypotheses about the origin of these fields include forest burning by the Goitacás indians and periodical floods by the Paraíba do Sul River and the lagoon system. The palynologycal analysis of two lake cores obtained in the municipality of Campos dos Goytacazes revealed opening episodes of hygrophilous forest and the establishment of field vegetation, recorded at ca. 6,500 and ca. 4,000 14C yr BP. The partial replacement of forest by field vegetation in the first episode was probably caused by floods of the lower areas during the development of the Holocene lagoon phase. During the second episode, successions of vegetational patterns occurred due to lowering of the sea level. Drying and enlarging of the coastal plain have allowed its colonization by herbs and heliophyte plants. The palynological analysis does not provide any evidence that sustains the theories of use of fire and agricultural activities by indigenous groups during these periods.
Keywords: Brazil
Campos dos Goytacazes
Holocene
Vegetation dynamics
Palinology
keywords: Campos dos Goytacazes
Brasil
Holoceno
Dinâmica da vegetação
Palinologia
Issue Date: 2011
Publisher: Academia Brasileira de Ciências
Citation: LUZ, Cynthia F. P. da; et al. Palynological evidence of the replacement of the hygrophilous forest by field vegetation during the last 7,000 years B.P. in the northern coast of Rio de Janeiro, Brazil. Anais da Academia Brasileira de Ciências, v..83, n.3, p.939-951, 2011.
ISSN: 0001-3765
Copyright: open access
Appears in Collections:IOC - Artigos de Periódicos

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