Paleoenvironmental reconstruction of a Late Quaternary lagoon system in southern Brazil (Jaguaruna region, Santa Catarina state) based on multi-proxy analysis

Autor(es)

Carvalho do Amaral, Paula Garcia ^{[1, 2]} ; Fonseca Giannini, Paulo Cesar ^[2] ; Sylvestre, Florence ^[1] ; Ruiz Pessenda, Luiz Carlos ^[3]

Afiliação do(s) autor(es)

^[1] Aix Marseille Univ, CEREGE, CNRS, IRD, F-13545 Aix En Provence 4 - France

^[2] Univ Sao Paulo, Inst Geociencias, Dept Geol Sedimentar & Ambiental, BR-01498 Sao Paulo - Brazil

^[3] Univ Sao Paulo, CENA, Lab Carbono 14, Piracicaba, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF QUATERNARY SCIENCE; v. 27, n. 2, p. 181-191, FEB 2012.
• Citações Web of Science: 12

Resumo

This paper provides a paleoenvironmental reconstruction of a Late Quaternary lagoon system in the Jaguaruna region of Santa Catarina state, southern Brazil. Integrated results of bulk sedimentary organic matter characterization (delta C-13, delta N-15 and C/N), microfossil (pollen and diatom) and grain-size analysis from three shallow cores (similar to 2.5m depth) allowed us to propose an evolving paleogeographic scenario in this coastal region for the last ca. 5500 cal a BP. The lagoonal system in this area was more extensive during the mid-Holocene than today, with a gradual and continuous lagoon-sea disconnection until the present. We add to the debate regarding relative sea-level (RSL) variations for the Brazilian coast during the Holocene and discuss the importance of sedimentary dynamics for interpreting changes in coastal ecosystems. The multi-proxy analysis suggests that changes in coastal ecosystems could be directly related to local sedimentary processes, which are not necessarily linked to RSL fluctuations and/or to climatic variations. Copyright (c) 2011 John Wiley \& Sons, Ltd. (AU)

• Processo FAPESP: 04/11038-0 - Sambaquis e paisagem: modelando a inter-relação entre processos formativos culturais e naturais no litoral sul de Santa Catarina
• Beneficiário: Paulo Antônio Dantas de Blasis
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 05/51034-6 - Evolução da Floresta Atlântica no sul-sudeste do Brasil: abordagem integrada sedimentológica-micropaleontológica
• Beneficiário: Paulo César Fonseca Giannini
• Modalidade de apoio: Auxílio à Pesquisa - Regular