Fitólitos De Sedimentos E Plantas – Métodos De Extração E Suas Aplicações

Coe, Heloisa Helena Gomes; Machado, David Oldack Barcelos Ferreira; Ricardo, Sarah Domingues Fricks; Chueng, Karina Ferreira

doi:10.22533/at.ed.12321130111

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“…Previous paleoenvironmental reconstitution studies based on phytolith indicators (Chueng et al, 2018;Chueng et al, 2020;Coe et al, 2020;Coe et al, 2021) have noted the development, during the Holocene, of a favorable climate for ancient human occupations of hunter-gatherer and horticultural groups in southeastern and southern Brazil. Our phytolith results proved promising for archaeobotanical understanding and paleoenvironmental reconstruction to infer the climatic, vegetational, and regional context, thus elucidating the natural and cultural repertoire of the Itapeva Shelter.…”

Section: Discussionmentioning

confidence: 99%

The paleoenvironment of southeastern São Paulo: contributions from Itapeva shelter to a discussion on anthropic and natural insertion

Souza¹,

Chueng

Rizzi

2022

Rev. Mus. Arqueol. Etnol.

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Paleoclimate reconstitution for the state of São Paulo results from past and ongoing research efforts in palynology, anthracology, and stable isotope studies. In cases such as southern São Paulo, however, researchers are required to extrapolate data from the states of Paraná, Santa Catarina, and Rio Grande do Sul for comparisons. Phytoliths and seeds were collected from sediments retrieved from excavation units D18 and G6 at the Abrigo de Itapeva [Itapeva Shelter] archeological site and analyzed. Seed results indicate that Ocotea (Lauraceae) is present in the initial levels, whereas Syagrus romanzoffiana predominates at all other stratigraphic levels. The former is a species of Atlantic Forest that occurs in Araucaria Forests; the latter is a palm species found in southeastern and southern Brazil. Phytoliths analysis reveals a change from a drier climate with grassland vegetation to a woody forest in the later periods of shelter occupation. As such, grassland and forest vegetation types occur from base stratigraphic levels up to level seven, dating from 5,510 cal BP to 730 cal BP. Conversely, from level seven up to the surface levels, dated from 730 cal BP to 560 cal BP, we see species linked to Araucaria Forest proliferation which may indicate the presence of Jê groups in the study area, thus corroborating studies on the possible anthropization of São Paulo forests from 1,000 BP.

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Section: Discussionmentioning

confidence: 99%