Registro completo |
Provedor de dados: |
Acta Botanica
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País: |
Brazil
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Título: |
Palynological evidence of vegetation change during the last 10,000 years in the mid-valley of the Rio Doce, Brazil
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Autores: |
Fonseca-Silva,Fernanda Mara
Carvalho,Marcelo de Araujo
Ribeiro,Sérvio Pontes
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Data: |
2019-03-01
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Ano: |
2019
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Palavras-chave: |
Holocene
Paleovegetation
Parque Estadual do Rio Doce (PERD)
Pollen analysis
South America
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Resumo: |
ABSTRACT In order to reconstruct the vegetation history of the last 10.000 years, palynological analyses were carried out using 17 sedimentary samples of a core drilled in Parque Estadual do Rio Doce (PERD-MG). Twenty-one species of fern spores, 52 species of pollen grains and six species of fungi were identified. Phase 1 (10.375 - 9.350 cal. years BP) is characterized by a low concentration and diversity of pollen grains and is thus interpreted as a fluvial system with the presence of coarse-grained sediments. Phase 2 (9.062 - 8.195 cal. Years BP) is interpreted as a transition from a fluvial to lacustrine environment. Phase 3 (7.905 - 4.785 cal years BP) is characterized by increased trend of palynomorph concentration, highlighted by a high abundance and diversity of fern spores, which are indicative of a more a humid condition. The uppermost phase, Phase 4 (4.785 - 50 cal. Years AP), possessed a lower abundance of herbaceous flora, which is replaced by other vegetation groups (e.g. marsh, cerrado, Atlantic Forest). The uppermost sample represents the contemporary environment (~50 years), which is characterized as seasonally-flooded.
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Tipo: |
Info:eu-repo/semantics/article
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Idioma: |
Inglês
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Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000100029
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Editor: |
Sociedade Botânica do Brasil
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Relação: |
10.1590/0102-33062018abb0128
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Formato: |
text/html
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Fonte: |
Acta Botanica Brasilica v.33 n.1 2019
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Direitos: |
info:eu-repo/semantics/openAccess
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