Environmental changes recorded in the Holocene sedimentary infill of a tropical estuary

12 páginas.-- 7 figuras.-- 2 tablas.-- 79 referencias.-- Supplementary data related to this article can be found at https://doi.org/10.1016/j.quaint.2018.03.006 .--

Detalhes bibliográficos
Autores: Kumar, Mukesh, Boski, Tomasz, Lima‐Filho, Francisco P., Bezerra, Francisco H.R., González-Vila, Francisco Javier, González-Pérez, José Antonio
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2018
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/163031
Acesso em linha:http://hdl.handle.net/10261/163031
Access Level:acceso abierto
Palavra-chave:Analytical pyrolysis
Sea level changes
Holocene
Vegetation biomarkers
Paleoenvironmental conditions
id ES_4c4daf8b461aa4fc4dc2745dcfa900a5
oai_identifier_str oai:digital.csic.es:10261/163031
network_acronym_str ES
network_name_str España
repository_id_str
spelling Environmental changes recorded in the Holocene sedimentary infill of a tropical estuaryKumar, MukeshBoski, TomaszLima‐Filho, Francisco P.Bezerra, Francisco H.R.González-Vila, Francisco JavierGonzález-Pérez, José AntonioAnalytical pyrolysisSea level changesHoloceneVegetation biomarkersPaleoenvironmental conditions12 páginas.-- 7 figuras.-- 2 tablas.-- 79 referencias.-- Supplementary data related to this article can be found at https://doi.org/10.1016/j.quaint.2018.03.006 .--Early-to late Holocene sedimentary infill of the Potengi-Jundiai Estuary (Brazil) was studied in a 31.5 m long sediment core. The borehole was drilled in a mangrove area within the central part of the flood tide delta. The sedimentary record, encompassing the last 10 kyr, was studied for sediment texture and for the n-alkanes composition of organic matter (OM). Sediments rich in OM and bivalve shells accumulated during the period of sea-level rise, mostly in an intertidal environment of mangrove forest, mudflat and subtidal estuarine flood delta. The characterization of n-alkanes (C10-C33) and lignin methoxyphenols by means of direct analytical pyrolysis (Py-GC/MS) technique allowed determining the sources of the extant OM. Downcore fluctuations were observed in n-alkanes and in several n-alkane based indices, such as long chain carbon preference index (CPI C24-C33), long to short chain ratio (L/S) and average chain length (ACL), as well as in the relative proportion of lignin derived compounds. The n-alkanes distribution points to changing sources of OM input to the estuarine sediments over most of the Holocene period. Major inputs of terrestrial vegetation alternated with periods of mixed input from aquatic macrophytes as the rate of sea-level rise changed over time. The n-alkanes distribution and the lignin markers were useful for reconstructing paleoenvironmental conditions, particularly during the early Holocene when the lower Potengi River valley (now an estuarine area) could accommodate terrestrial forest vegetation before switching to halophytic mangroves as sea levels rose.This study has been carried out within the framework of the project PVE 060/2012 - MUNIM, funded by CAPES, Ciência sem Fronteira, program of the Brazilian Government. We would like to express our gratitude to Professors F. Pinheiro Lima Filho and F.H. Rego Bezerra for their invaluable help during all phases of field work. Also acknowledge is EU Erasmus Mundus Joint Doctorate fellowship administered by FUECA, University of Cádiz, Spain to Mukesh Kumar. Research was supported by EU contract numbers FP7-ENV-2011, Grant agreement No. 282845, and FP7-ENV-2012 Grant agreement No. 308392 and MINECO Spain project INTERCARBON (CGL2016-78937-R). Alba Carmona Navarro, and Desire Monis Carrere from IRNAS-CSIC are thanked for their technical assistance.Peer reviewedElsevierUniversidad de CádizEuropean CommissionMinisterio de Economía y Competitividad (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201820182018info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/163031reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/FP7/282845info:eu-repo/grantAgreement/EC/FP7/308392info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2016-78937-Rhttp://dx.doi.org/10.1016/j.quaint.2018.03.006Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1630312026-05-22T06:33:51Z
dc.title.none.fl_str_mv Environmental changes recorded in the Holocene sedimentary infill of a tropical estuary
title Environmental changes recorded in the Holocene sedimentary infill of a tropical estuary
spellingShingle Environmental changes recorded in the Holocene sedimentary infill of a tropical estuary
Kumar, Mukesh
Analytical pyrolysis
Sea level changes
Holocene
Vegetation biomarkers
Paleoenvironmental conditions
title_short Environmental changes recorded in the Holocene sedimentary infill of a tropical estuary
title_full Environmental changes recorded in the Holocene sedimentary infill of a tropical estuary
title_fullStr Environmental changes recorded in the Holocene sedimentary infill of a tropical estuary
title_full_unstemmed Environmental changes recorded in the Holocene sedimentary infill of a tropical estuary
title_sort Environmental changes recorded in the Holocene sedimentary infill of a tropical estuary
dc.creator.none.fl_str_mv Kumar, Mukesh
Boski, Tomasz
Lima‐Filho, Francisco P.
Bezerra, Francisco H.R.
González-Vila, Francisco Javier
González-Pérez, José Antonio
author Kumar, Mukesh
author_facet Kumar, Mukesh
Boski, Tomasz
Lima‐Filho, Francisco P.
Bezerra, Francisco H.R.
González-Vila, Francisco Javier
González-Pérez, José Antonio
author_role author
author2 Boski, Tomasz
Lima‐Filho, Francisco P.
Bezerra, Francisco H.R.
González-Vila, Francisco Javier
González-Pérez, José Antonio
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad de Cádiz
European Commission
Ministerio de Economía y Competitividad (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Analytical pyrolysis
Sea level changes
Holocene
Vegetation biomarkers
Paleoenvironmental conditions
topic Analytical pyrolysis
Sea level changes
Holocene
Vegetation biomarkers
Paleoenvironmental conditions
description 12 páginas.-- 7 figuras.-- 2 tablas.-- 79 referencias.-- Supplementary data related to this article can be found at https://doi.org/10.1016/j.quaint.2018.03.006 .--
publishDate 2018
dc.date.none.fl_str_mv 2018
2018
2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/163031
url http://hdl.handle.net/10261/163031
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/FP7/282845
info:eu-repo/grantAgreement/EC/FP7/308392
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2016-78937-R
http://dx.doi.org/10.1016/j.quaint.2018.03.006
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869407618589523968
score 15,812429

Registos relacionados