%0 Journal Article
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@dissemination WEBSCI; PORTALCAPES.
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%3 clarisse.pdf
%X Wetland dynamics in the eastern Amazon region during the past 7000 years were studied using pollen, textural and structural analyses of sediment cores, as well as AMS radiocarbon dating. Four sediment cores were sampled from Marajó Island, which is located at the mouth of the Amazon River. Marajó Island is covered mainly by Amazon coastal forest, as well as herbaceous and varzea vegetation. Three cores were sampled from Lake Arari, which is surrounded by herbaceous vegetation flooded by freshwater. One core was sampled from a herbaceous plain located 15 km southeast of Lake Arari. Pollen preservation in the sedimentary deposits from this lake and from its drainage basin suggests significant vegetation changes on Marajó Island during the mid- and late-Holocene. Between 73287168 and 23062234 cal. yr BP, mangrove vegetation was more widely distributed on the island than it is today. During the past 23062234 cal. yr BP herbaceous vegetation expanded. Sedimentary structures and pollen data suggest a lagoon system until ~ 2300 cal. yr BP. The current distribution of mangroves along the Pará littoral, together with the presence of mangrove pollen and the sedimentary structures of the cores, indicates greater marine influence during the mid-Holocene. This may be attributed to the association between the eustatic sea-level change and the dry period recorded in Amazonia during the early- and mid-Holocene, followed by a wet phase over the past 2000 years.
%@mirrorrepository sid.inpe.br/mtc-m19@80/2009/08.21.17.02.53
%N 1
%T Holocene Coastal vegetation changes at the mouth of the Amazon river
%@secondarytype PRE PI
%K * Amazon region,     * climatic change herbaceous vegetation,     * mangrove,     * palynology.
%@usergroup administrator
%@usergroup secretaria.cpa@dir.inpe.br
%@group
%@group
%@group
%@group
%@group
%@group DSR-OBT-INPE-MCT-BR
%@e-mailaddress secretaria.cpa@dir.inpe.br
%@secondarykey INPE--PRE/
%@secondarymark B3_BIOTECNOLOGIA B1_ECOLOGIA_E_MEIO_AMBIENTE B1_GEOCIÊNCIAS
%@issn 0034-6667
%2 sid.inpe.br/mtc-m19/2011/12.29.13.40.37
%@affiliation Federal University of Pará, Avenida Perimentral 2651, Terra Firme, CEP: 66077-530, Belém (PA), Brazil
%@affiliation Faculty of Oceanography, Federal University of Pará, Rua Augusto Corrêa 1, Guama, CEP: 66075-110, Belém (PA), Brazil
%@affiliation Universidade de São Paulo, Laboratório de C 14.
%@affiliation São Paulo University, 14C Laboratory, Avenida Centenário 303, 13416000 Piracicaba, SP, Brazil
%@affiliation Federal University of Pará, Avenida Perimentral 2651, Terra Firme, CEP: 66077-530, Belém (PA), Brazil
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Center for Tropical Marine Ecology (ZMT), Fahrenheitstr. 6, 28359 Bremen, Germany
%B Review of Palaeobotany and Palynology
%@versiontype publisher
%P 21-30
%4 sid.inpe.br/mtc-m19/2011/12.29.13.40
%@documentstage not transferred
%D 2011
%V 168
%@doi 10.1016/j.revpalbo.2011.09.008
%A Smith, C. B.,
%A Cohen, M. C. L.,
%A Ruiz Pessenda, Luiz Carlos,
%A França, M. C.,
%A Guimaraes, J. T. F.,
%A Rossetti, Dilce Fátima,
%A Lara, R. J.,
%@area SRE