globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2017.01.006
论文题名:
Shell sclerochronology and stable isotopes of the bivalve Anomalocardia flexuosa (Linnaeus, 1767) from southern Brazil: Implications for environmental and archaeological studies
作者: Colonese A.C.; Netto S.A.; Francisco A.S.; DeBlasis P.; Villagran X.S.; de Almeida Rocha Ponzoni R.; Hancock Y.; Hausmann N.; Eloy de Farias D.S.; Prendergast A.; Schöne B.R.; da Cruz F.W.; Giannini P.C.F.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2017
卷: 484
起始页码: 7
结束页码: 21
语种: 英语
英文关键词: Anomalocardia flexuosa shells ; Coastal lagoon ; Eastern South America ; Light stable isotopes ; Sclerochronology
英文摘要: 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 δ18O and δ13C 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 (Cabeçuda) to compare their stable carbon and oxygen isotope values with those of modern specimens. Shell growth increments, δ18O and δ13C 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 Cabeçuda shell midden in the LLS indirectly indicates that environmental conditions during the late Holocene were different from present day. In particular, intra-shell δ18O and δ13C 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. © 2017 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/67761
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作者单位: BioArCh, Department of Archaeology, University of York, Environment Building, Wentworth Way, York, United Kingdom; Marine Science Laboratory, Universidade do Sul de Santa Catarina (UNISUL), Av J. Acácio Moreira, 787, Dehon, Tubarão, Brazil; Museu de Arqueologia e Etnologia, Universidade de São Paulo (USP), Av. Prof. Almeida Prado, 1466, Butantã, São Paulo, Brazil; Department of Physics, University of York, Heslington, York, United Kingdom; York Centre for Complex Systems Analysis, University of York, York, United Kingdom; Institute of Electronic Structure and Laser, Foundation for Research and Technology - Hellas, P.O. Box 1527, Heraklion, Greece; Grupep, Universidade do Sul de Santa Catarina (UNISUL), Av J. Acácio Moreira, 787, Dehon, Tubarão, Brazil; Institute of Geosciences, University of Mainz, J.-J.-Becher-Weg 21, Mainz, Germany; Instituto de Geociências, Universidade de São Paulo (USP), R. do Lago, 562, Cidade Universitária, São Paulo, Brazil

Recommended Citation:
Colonese A.C.,Netto S.A.,Francisco A.S.,et al. Shell sclerochronology and stable isotopes of the bivalve Anomalocardia flexuosa (Linnaeus, 1767) from southern Brazil: Implications for environmental and archaeological studies[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2017-01-01,484
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