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

Colonese, André Carlo Colonese; Netto, Sergio Antônio; Francisco, André Silva Francisco

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

dc.contributor.author	Colonese, André Carlo Colonese
dc.contributor.author	Netto, Sergio Antônio
dc.contributor.author	Francisco, André Silva Francisco
dc.coverage.spatial	Holanda	pt_BR
dc.date.accessioned	2019-12-19T15:33:04Z
dc.date.accessioned	2020-11-26T17:39:36Z
dc.date.available	2019-12-19T15:33:04Z
dc.date.available	2020-11-26T17:39:36Z
dc.date.issued	2017	pt_BR
dc.description.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 δ18O and δ13C values of modern specimens collected alive fromthe Laguna Lagoonal System (LLS). Shells of Anomalocardia flexuosa are also one of themain biological components of pre-Columbian archaeological shell mounds and middens distributed along the Brazilian coastline. We therefore selected archaeological specimens froma 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 frompresent 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.	pt_BR
dc.description.sponsorship	Fapesp CNPq	pt_BR
dc.format.extent	p. 7–21	pt_BR
dc.identifier	janeiro	pt_BR
dc.identifier.issn	0031-0182	pt_BR
dc.identifier.uri	https://www.sciencedirect.com/science/article/pii/S003101821730010X	pt_BR
dc.identifier.uri	https://repositorio.animaeducacao.com.br/handle/ANIMA/2662
dc.language.iso	en	pt_BR
dc.relation.ispartofseries	484	pt_BR
dc.rights	Attribution-NonCommercial-NoDerivs 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/br/	*
dc.subject	Coastal lagoon	pt_BR
dc.subject	Anomalocardia flexuosa	pt_BR
dc.subject	Laguna	pt_BR
dc.subject	Sclerochronology	pt_BR
dc.subject	Salinity	pt_BR
dc.title	Shell sclerochronology and stable isotopes of the bivalve Anomalocardia flexuosa (Linnaeus, 1767) from southern Brazil: Implications for environmental and archaeological studies	pt_BR
dc.type	Artigo de Periodico	pt_BR
local.affiliation.ies	Unisul
local.author.curso	Produção Científica	pt_BR
local.author.unidade	Ânima	pt_BR
local.rights.policy	Acesso embargado	pt_BR
local.subject.area	Ciências Exatas e da Terra	pt_BR
local.subject.areaanima	Ciências Humanas	pt_BR