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A dinâmica das florestas alagadas durante o holoceno no litoral de Calçoene, Amapá
(Universidade Federal do Pará, 2008-02-25) GUIMARÃES, José Tasso Felix; COHEN, Marcelo Cancela Lisboa; http://lattes.cnpq.br/8809787145146228
The integration of palynological and spectrophometric data with radiocarbon dating of sediment cores has allowed to propose developing model and vegetation dynamic according to climatic and relative sea-level changes during the Late Holocene in the Calçoene Coastal Plain- Amapá. Thus, this work suggests three periods characterized by marine influence between 2000- 800, 500-300, e 80 years BP - modern, as well as, two fluvial periods between 800-500 years BP and 300-80 years BP. The analysis of current patterns of geobotanical units distribution and palaeovegetation indicate a mangrove (311 Km 2 ) and várzea forest (684 Km 2 ) migration on inundated field (1.021 Km 2 ) positioned in elevated topographically areas of this coastal plain, which may be related to a local relative sea-level rise.