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Shell sclerochronology and stable isotopes of the bivalve Anomalocardia flexuosa (Linnaeus, 1767) from southern Brazil: Implications for environmental and archaeological studies.(Report)

Colonese, Andre Carlo ; Netto, Sergio Antonio ; Francisco, Andre Silva ; Deblasis, Paulo ; Villagran, Ximena S. ; de Almeida Rocha Ponzoni, Raquel ; Hancock, Y. ; Hausmann, Niklas ; Eloy de Farias, Deisi Sunderlick ; Prendergast, Amy ; Schone, Bernd R. ; Da Cruz, Francisco William ; Giannini, Paulo Cesar Fonseca

Palaeogeography, Palaeoclimatology, Palaeoecology, Oct 15, 2017, Vol.484, p.7 [Periódico revisado por pares]

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  • Título:
    Shell sclerochronology and stable isotopes of the bivalve Anomalocardia flexuosa (Linnaeus, 1767) from southern Brazil: Implications for environmental and archaeological studies.(Report)
  • Autor: Colonese, Andre Carlo ; Netto, Sergio Antonio ; Francisco, Andre Silva ; Deblasis, Paulo ; Villagran, Ximena S. ; de Almeida Rocha Ponzoni, Raquel ; Hancock, Y. ; Hausmann, Niklas ; Eloy de Farias, Deisi Sunderlick ; Prendergast, Amy ; Schone, Bernd R. ; Da Cruz, Francisco William ; Giannini, Paulo Cesar Fonseca
  • Assuntos: Archaeology – Analysis ; Archaeology – Environmental Aspects ; Salinity – Analysis ; Salinity – Environmental Aspects
  • É parte de: Palaeogeography, Palaeoclimatology, Palaeoecology, Oct 15, 2017, Vol.484, p.7
  • Descrição: To access, purchase, authenticate, or subscribe to the full-text of this article, please visit this link: http://dx.doi.org/10.1016/j.palaeo.2017.01.006 Byline: Andre Carlo Colonese [andre.colonese@york.ac.uk] (a,*), Sergio Antonio Netto (b), Andre Silva Francisco (b), Paulo DeBlasis (c), Ximena S. Villagran (c), Raquel de Almeida Rocha Ponzoni (d), Y. Hancock (d,e), Niklas Hausmann (a,f), Deisi Sunderlick Eloy de Farias (g), Amy Prendergast (h), Bernd R. Schone (h), Francisco William da Cruz (i), Paulo Cesar Fonseca Giannini (i) Keywords Eastern South America; Coastal lagoon; Anomalocardia flexuosa shells; Sclerochronology; Light stable isotopes Highlights * Stable isotopes and sclerochronology of the bivalve Anomalocardia flexuosa in a subtropical coastal area of southern Brazil. * Anomalocardia flexuosa is an important food source and has been exploited since pre-Columbian times in in the region. * Shell growth increments, [delta].sup.18O and [delta].sup.13C values reflect environmental conditions, including temperature and salinity. * The [delta].sup.18O and [delta].sup.13C values of archaeological shells reveal distinct environmental conditions at 3 ka cal BP. Abstract This study presents the first stable isotopic and sclerochronological calibration of the bivalve Anomalocardia flexuosa (Linnaeus, 1767) in relation to environmental variables in a subtropical coastal area of southern Brazil. We investigate incremental shell growth patterns and [delta].sup.18O and [delta].sup.13C values of modern specimens collected alive from the Laguna Lagoonal System (LLS). Shells of Anomalocardia flexuosa are also one of the main biological components of pre-Columbian archaeological shell mounds and middens distributed along the Brazilian coastline. We therefore selected archaeological specimens from a local late Holocene shell mound (Cabecuda) to compare their stable carbon and oxygen isotope values with those of modern specimens. Shell growth increments, [delta].sup.18O and [delta].sup.13C values respond to a complex of environmental conditions, involving, for example, the effects of temperature and salinity. The isotopic information extracted from archaeological specimens from Cabecuda shell midden in the LLS indirectly indicates that environmental conditions during the late Holocene were different from present day. In particular, intra-shell [delta].sup.18O and [delta].sup.13C values of archaeological shells reveal a stronger marine influence at 3 ka cal BP, which is in contrast to the seasonal freshwater/seawater balance that currently prevails at the LLS. Author Affiliation: (a) BioArCh, Department of Archaeology, University of York, Environment Building, Wentworth Way, York, YO10 5DD, UK. (b) Marine Science Laboratory, Universidade do Sul de Santa Catarina (UNISUL), Av J. Acacio Moreira, 787, Dehon, Tubarao 88704-900, Brazil. (c) Museu de Arqueologia e Etnologia, Universidade de Sao Paulo (USP), Av. Prof. Almeida Prado, 1466, Butanta, Sao Paulo 05508-070, Brazil. (d) Department of Physics, University of York, Heslington, York YO10 5DD, UK. (e) York Centre for Complex Systems Analysis, University of York, York YO10 5GE, UK. (f) Institute of Electronic Structure and Laser, Foundation for Research and Technology - Hellas, P.O. Box 1527, GR-711 10 Heraklion, Greece. (g) Grupep, Universidade do Sul de Santa Catarina (UNISUL), Av J. Acacio Moreira, 787, Dehon, Tubarao 88704-900, Brazil. (h) Institute of Geosciences, University of Mainz, J.-J.-Becher-Weg 21, 55128 Mainz, Germany. (i) Instituto de GeociA*ncias, Universidade de Sao Paulo (USP), R. do Lago, 562, Cidade Universitaria, Sao Paulo 05508-080, Brazil. * Corresponding author. Article History: Received 3 August 2016; Revised 5 December 2016; Accepted 4 January 2017
  • Idioma: Inglês

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