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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Late Quaternary vegetation and climate dynamics in central-eastern Brazil: insights from a similar to 35k cal a bp peat record in the Cerrado biome

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Autor(es):
Horak-Terra, Ingrid [1] ; Martinez Cortizas, Antonio [2] ; Pinto Da Luz, Cynthia Fernandes [3] ; Silva, Alexandre Christofaro [4] ; Mighall, Tim [5] ; De Camargo, Plinio Barbosa [6] ; Mendonca-Filho, Carlos Victor [7] ; De Oliveira, Paulo Eduardo [8] ; Cruz, Francisco Willian [8] ; Vidal-Torrado, Pablo [9]
Número total de Autores: 10
Afiliação do(s) autor(es):
[1] Univ Fed Vales Jequitinhonha & Mucuri ICA UFVJM, Inst Ciencias Agr, BR 251 Av Univ 1000, BR-38610000 Unai, MG - Brazil
[2] Univ Santiago de Compostela USC, Fac Biol, EcoPast GI 1553, Santiago De Compostela 15782 - Spain
[3] Secretaria Infraestrutura & Meio Ambiente Estado, Inst Bot, Nuc Pesquisa Palinol, BR-04301902 Sao Paulo, SP - Brazil
[4] Univ Fed Vales Jequitinhonha & Mucuri UFVJM, Dept Engn Florestal, BR-39100000 Diamantina, MG - Brazil
[5] Univ Aberdeen, Sch Geosci, G22 St Marys, Aberdeen - Scotland
[6] Ctr Energia Nucl Agr CENA USP, Lab Ecol Isotop, BR-13416903 Piracicaba, SP - Brazil
[7] Univ Fed Vales Jequitinhonha & Mucuri UFVJM, Dept Ciencias Biol, BR-39100000 Diamantina, MG - Brazil
[8] Inst Geociencias IGc USP, Dept Geol Sedimentar & Ambiental, BR-05508080 Sao Paulo, SP - Brazil
[9] Escola Super Agr Luiz de Queiroz ESALQ USP, Dept Ciencia Solo, BR-13418900 Piracicaba, SP - Brazil
Número total de Afiliações: 9
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF QUATERNARY SCIENCE; v. 35, n. 5 MAY 2020.
Citações Web of Science: 0
Resumo

The late Quaternary evolution of central-eastern Brazil has been under-researched. Questions remain as to the origin of the Cerrado, a highly endangered biome, and other types of vegetation, such as the Capoes - small vegetation islands of semi-deciduous and mountain forests. We investigated the factors that influenced the expansion and contraction of the Cerrado and Capoes during the late Quaternary (last similar to 35 ka), using a multi-proxy approach: stable isotopes (delta C-13, delta N-15), geochemistry, pollen and multivariate statistics derived from a peat core (Pinheiro mire, Serra do Espinhaco Meridional). Five major shifts in precipitation, temperature, vegetation and landscape stability occurred at different timescales. Our study revealed that changes in the South Atlantic Convergence Zone (SACZ) seem to have been coeval with these shifts: from the Late Glacial Maximum to mid-Holocene the SACZ remained near (similar to 29.6 to similar to 16.5k cal a bp) and over (similar to 16.5 to similar to 6.1 k cal a bp) the study area, providing humidity to the region. This challenges previous research which suggested that climate was drier for this time period. At present, the Capoes are likely to be a remnant of a more humid climate; meanwhile, the Cerrado biome seems to have stablished in the late Holocene, after similar to 3.1 k cal a bp. (AU)

Processo FAPESP: 10/51637-0 - Reconstrução paleoambiental da Serra do Espinhaço Meridional durante o quartenário baseado nos registros polínicos, geoquímicos e isotópicos em organossolos
Beneficiário:Ingrid Horák Terra
Linha de fomento: Bolsas no Brasil - Doutorado
Processo FAPESP: 12/00676-1 - Evidências geoquímicas das mudanças ambientais durante o quaternário na Serra do Espinhaço meridional, Minas Gerais
Beneficiário:Ingrid Horák Terra
Linha de fomento: Bolsas no Exterior - Estágio de Pesquisa - Doutorado