Tracing sinking organic matter sources in the NW Iberian upwelling system (NE Atlantic Ocean): comparison between elemental, isotopic and molecular indicators

30 pages, 8 figures, 2 tables

Detalles Bibliográficos
Autores: Zúñiga, Diana, Villacieros-Robineau, Nicolás, Froján, M., Alonso Pérez, Fernando, Granda Grandoso, Francisco de la, Castro, Carmen G.
Tipo de recurso: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2019
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:dnet:digitalcsic_::095ab0dd505a20cc30d931adc25bdc78
Acceso en línea:http://hdl.handle.net/10261/176261
Access Level:acceso abierto
Palabra clave:Organic matter
Stable isotopes
Pyrolysis-GC-MS
Coastal upwelling systems
NW Iberian margin
Sediment traps
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spelling Tracing sinking organic matter sources in the NW Iberian upwelling system (NE Atlantic Ocean): comparison between elemental, isotopic and molecular indicatorsZúñiga, DianaVillacieros-Robineau, NicolásFroján, M.Alonso Pérez, FernandoGranda Grandoso, Francisco de laCastro, Carmen G.Organic matterStable isotopesPyrolysis-GC-MSCoastal upwelling systemsNW Iberian marginSediment traps30 pages, 8 figures, 2 tablesWe studied the seasonal fluctuations in the composition of sinking particulate organic matter (POM) in the only upwelling-affected continental margin of Europe, to improve our understanding of the carbon (C) cycle of such systems. The methods employed targeted the elemental, stable isotope (δ13Coc and δ15N) and molecular (Py-GC-MS) composition. The results showed that the sinking POM in this margin is predominantly of marine origin, with δ15N (5.2 ± 0.3 ‰) and C/N (9.7 ± 1.0) values similar to those of marine plankton, and high abundances of pyrolysis products with isoprenoid structures, N-containing products from proteins (indoles, cyanobenzenes, etc.), and N-acetylated polysaccharides (acetamide, acetamidofurans) from chitin and peptidoglycan. Furthermore, the dataset demonstrates seasonal differences in POM composition under different oceanographic scenarios: i) dominance of most N-compounds, fatty acids and isoprenoid products during highly productive upwelling seasons, and ii) an increase in the relative abundance of linear alkanes/alkenes, phenols, lignin and PAH reflecting terrestrial influence during downwelling periods. In addition, the detection of isoprenoid alkylthiophenes traces (compounds formed under reducing conditions in the sediment) point to resuspended sediment in the trap material due to hydrodynamic effects of currents and waves on the seafloor. The results show that analytical pyrolysis is a useful tool for identifying different types of autochthonous and terrestrial POM, and therefore identification of the sources of sinking POM.This study was sponsored by EU FEDER projects RAIA (INTERREG 2009/2011-0313/RAIA/E) and RAIA.co (INTERREG 2011/2013-052/RAIA.co/1E), Spanish Government project CAIBEX (CTM2007-66408-C02-01/MAR), EXCAPA project (10MDS402013PR) supported by the Xunta de Galicia and the CALIBERIA project (PTDC/MAR/102045/2008) financed by Fundação para a Ciência e a Tecnologia (FCT-Portugal). D.Z. was funded by a postdoctoral fellowship (Plan I2C) from Xunta de Galicia (Spain)Peer reviewedElsevierEuropean CommissionXunta de GaliciaFundação para a Ciência e a Tecnologia (Portugal)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201920192019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Preprintinfo:eu-repo/semantics/submittedVersionhttp://hdl.handle.net/10261/176261reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MEC//CTM2007-66408-C02-01Kaal, Joeri; Froján, M.; Granda Grandoso, Francisco de la; Castro, Carmen G.; Alonso Pérez, Fernando; Zúñiga, Villacieros-Robineau, Nicolás; Diana; 2019; Data for: Tracing sinking organic matter sources in the NW Iberian upwelling system (NE Atlantic Ocean) [Dataset]; Mendeley Data; Version 1; http://doi.org/10.17632/35374bsdnn.1Zúñiga, Diana; Castro, Carmen G; 2019 ; "RAIA sediment trap total mass fluxes near Cape Silleiro (NW Iberia) [Dataset]"; DIGITAL.CSIC; http://dx.doi.org/10.20350/digitalCSIC/8958https://doi.org/10.1016/j.jaap.2019.01.016Síinfo:eu-repo/semantics/openAccessoai:dnet:digitalcsic_::095ab0dd505a20cc30d931adc25bdc782026-05-22T06:33:51Z
dc.title.none.fl_str_mv Tracing sinking organic matter sources in the NW Iberian upwelling system (NE Atlantic Ocean): comparison between elemental, isotopic and molecular indicators
title Tracing sinking organic matter sources in the NW Iberian upwelling system (NE Atlantic Ocean): comparison between elemental, isotopic and molecular indicators
spellingShingle Tracing sinking organic matter sources in the NW Iberian upwelling system (NE Atlantic Ocean): comparison between elemental, isotopic and molecular indicators
Zúñiga, Diana
Organic matter
Stable isotopes
Pyrolysis-GC-MS
Coastal upwelling systems
NW Iberian margin
Sediment traps
title_short Tracing sinking organic matter sources in the NW Iberian upwelling system (NE Atlantic Ocean): comparison between elemental, isotopic and molecular indicators
title_full Tracing sinking organic matter sources in the NW Iberian upwelling system (NE Atlantic Ocean): comparison between elemental, isotopic and molecular indicators
title_fullStr Tracing sinking organic matter sources in the NW Iberian upwelling system (NE Atlantic Ocean): comparison between elemental, isotopic and molecular indicators
title_full_unstemmed Tracing sinking organic matter sources in the NW Iberian upwelling system (NE Atlantic Ocean): comparison between elemental, isotopic and molecular indicators
title_sort Tracing sinking organic matter sources in the NW Iberian upwelling system (NE Atlantic Ocean): comparison between elemental, isotopic and molecular indicators
dc.creator.none.fl_str_mv Zúñiga, Diana
Villacieros-Robineau, Nicolás
Froján, M.
Alonso Pérez, Fernando
Granda Grandoso, Francisco de la
Castro, Carmen G.
author Zúñiga, Diana
author_facet Zúñiga, Diana
Villacieros-Robineau, Nicolás
Froján, M.
Alonso Pérez, Fernando
Granda Grandoso, Francisco de la
Castro, Carmen G.
author_role author
author2 Villacieros-Robineau, Nicolás
Froján, M.
Alonso Pérez, Fernando
Granda Grandoso, Francisco de la
Castro, Carmen G.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv European Commission
Xunta de Galicia
Fundação para a Ciência e a Tecnologia (Portugal)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Organic matter
Stable isotopes
Pyrolysis-GC-MS
Coastal upwelling systems
NW Iberian margin
Sediment traps
topic Organic matter
Stable isotopes
Pyrolysis-GC-MS
Coastal upwelling systems
NW Iberian margin
Sediment traps
description 30 pages, 8 figures, 2 tables
publishDate 2019
dc.date.none.fl_str_mv 2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Preprint
info:eu-repo/semantics/submittedVersion
format article
status_str submittedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/176261
url http://hdl.handle.net/10261/176261
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MEC//CTM2007-66408-C02-01
Kaal, Joeri; Froján, M.; Granda Grandoso, Francisco de la; Castro, Carmen G.; Alonso Pérez, Fernando; Zúñiga, Villacieros-Robineau, Nicolás; Diana; 2019; Data for: Tracing sinking organic matter sources in the NW Iberian upwelling system (NE Atlantic Ocean) [Dataset]; Mendeley Data; Version 1; http://doi.org/10.17632/35374bsdnn.1
Zúñiga, Diana; Castro, Carmen G; 2019 ; "RAIA sediment trap total mass fluxes near Cape Silleiro (NW Iberia) [Dataset]"; DIGITAL.CSIC; http://dx.doi.org/10.20350/digitalCSIC/8958
https://doi.org/10.1016/j.jaap.2019.01.016
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
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