Atmospheric and Oceanographic Forcing Impact Particle Flux Composition and Carbon Sequestration in the Eastern Mediterranean Sea: A Three-Year Time-Series Study in the Deep Ierapetra Basin.

Pedrosa Pàmies, Rut; Parinos, C.; Sanchez-Vidal, Anna; Calafat Frau, Antoni; Canals Artigas, Miquel; Velaoras, D.; Mihalopoulos, N.; Kanakidou, M.; Lampadariou, N.; Gogou, A.

Atmospheric and Oceanographic Forcing Impact Particle Flux Composition and Carbon Sequestration in the Eastern Mediterranean Sea: A Three-Year Time-Series Study in the Deep Ierapetra Basin.

Sinking particles are a critical conduit for the export of organic material from surface waters to the deep ocean. Despite their importance in oceanic carbon cycling, little is known about the biotic composition and seasonal variability of sinking particles reaching abyssal depths. Herein, sinking p...

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Autores:	Pedrosa Pàmies, Rut, Parinos, C., Sanchez-Vidal, Anna, Calafat Frau, Antoni, Canals Artigas, Miquel, Velaoras, D., Mihalopoulos, N., Kanakidou, M., Lampadariou, N., Gogou, A.
Tipo de recurso:	artículo
Estado:	Versión publicada
Fecha de publicación:	2021
País:	España
Institución:	Universidad de Barcelona
Repositorio:	Dipòsit Digital de la UB
OAI Identifier:	oai:diposit.ub.edu:2445/174947
Acceso en línea:	https://hdl.handle.net/2445/174947
Access Level:	acceso abierto
Palabra clave:	Geologia submarina Fons marins Mediterrània (Mar) Geoquímica orgànica Submarine geology Ocean bottom Mediterranean Sea Organic geochemistry

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spelling	Atmospheric and Oceanographic Forcing Impact Particle Flux Composition and Carbon Sequestration in the Eastern Mediterranean Sea: A Three-Year Time-Series Study in the Deep Ierapetra Basin.Pedrosa Pàmies, RutParinos, C.Sanchez-Vidal, AnnaCalafat Frau, AntoniCanals Artigas, MiquelVelaoras, D.Mihalopoulos, N.Kanakidou, M.Lampadariou, N.Gogou, A.Geologia submarinaFons marinsMediterrània (Mar)Geoquímica orgànicaSubmarine geologyOcean bottomMediterranean SeaOrganic geochemistrySinking particles are a critical conduit for the export of organic material from surface waters to the deep ocean. Despite their importance in oceanic carbon cycling, little is known about the biotic composition and seasonal variability of sinking particles reaching abyssal depths. Herein, sinking particle flux data, collected in the deep Ierapetra Basin for a three-year period (June 2010 to June 2013), have been examined at the light of atmospheric and oceanographic parameters and main mass components (lithogenic, opal, carbonates, nitrogen, and organic carbon), stable isotopes of particulate organic carbon (POC) and source-specific lipid biomarkers. Our aim is to improve the current understanding of the dynamics of particle fluxes and the linkages between atmospheric dynamics and ocean biogeochemistry shaping the export of organic matter in the deep Eastern Mediterranean Sea. Overall, particle fluxes showed seasonality and interannual variability over the studied period. POC fluxes peaked in spring April-May 2012 (12.2 mg m−2 d−1) related to extreme atmospheric forcing. Summer export was approximately fourfold higher than mean wintertime, fall, and springtime (except for the episodic event of spring 2012), fueling efficient organic carbon sequestration. Lipid biomarkers indicate a high relative contribution of natural and anthropogenic, marine- and land-derived POC during both spring (April-May) and summer (June-July) reaching the deep-sea floor. Moreover, our results highlight that both seasonal and episodic pulses are crucial for POC export, while the coupling of extreme weather events and atmospheric deposition can trigger the influx of both marine labile carbon and anthropogenic compounds to the deep Levantine Sea. Finally, the comparison of time series data of sinking particulate flux with the corresponding biogeochemical parameters data previously reported for surface sediment samples from the deep-sea shed light on the benthic-pelagic coupling in the study area. Thus, this study underscores that accounting the seasonal and episodic pulses of organic carbon into the deep sea is critical in modeling the depth and intensity of natural and anthropogenic POC sequestration, and for a better understanding of the global carbon cycle.Frontiers Media2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/174947Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.3389/feart.2021.591948Frontiers in Earth Science, 2021, vol. 9, num. 591948, p. 1-27https://doi.org/10.3389/feart.2021.591948cc-by (c) Pedrosa Pàmies, Rut et al., 2021http://creativecommons.org/licenses/by/3.0/esinfo:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1749472026-05-27T06:46:51Z
dc.title.none.fl_str_mv	Atmospheric and Oceanographic Forcing Impact Particle Flux Composition and Carbon Sequestration in the Eastern Mediterranean Sea: A Three-Year Time-Series Study in the Deep Ierapetra Basin.
title	Atmospheric and Oceanographic Forcing Impact Particle Flux Composition and Carbon Sequestration in the Eastern Mediterranean Sea: A Three-Year Time-Series Study in the Deep Ierapetra Basin.
spellingShingle	Atmospheric and Oceanographic Forcing Impact Particle Flux Composition and Carbon Sequestration in the Eastern Mediterranean Sea: A Three-Year Time-Series Study in the Deep Ierapetra Basin. Pedrosa Pàmies, Rut Geologia submarina Fons marins Mediterrània (Mar) Geoquímica orgànica Submarine geology Ocean bottom Mediterranean Sea Organic geochemistry
title_short	Atmospheric and Oceanographic Forcing Impact Particle Flux Composition and Carbon Sequestration in the Eastern Mediterranean Sea: A Three-Year Time-Series Study in the Deep Ierapetra Basin.
title_full	Atmospheric and Oceanographic Forcing Impact Particle Flux Composition and Carbon Sequestration in the Eastern Mediterranean Sea: A Three-Year Time-Series Study in the Deep Ierapetra Basin.
title_fullStr	Atmospheric and Oceanographic Forcing Impact Particle Flux Composition and Carbon Sequestration in the Eastern Mediterranean Sea: A Three-Year Time-Series Study in the Deep Ierapetra Basin.
title_full_unstemmed	Atmospheric and Oceanographic Forcing Impact Particle Flux Composition and Carbon Sequestration in the Eastern Mediterranean Sea: A Three-Year Time-Series Study in the Deep Ierapetra Basin.
title_sort	Atmospheric and Oceanographic Forcing Impact Particle Flux Composition and Carbon Sequestration in the Eastern Mediterranean Sea: A Three-Year Time-Series Study in the Deep Ierapetra Basin.
dc.creator.none.fl_str_mv	Pedrosa Pàmies, Rut Parinos, C. Sanchez-Vidal, Anna Calafat Frau, Antoni Canals Artigas, Miquel Velaoras, D. Mihalopoulos, N. Kanakidou, M. Lampadariou, N. Gogou, A.
author	Pedrosa Pàmies, Rut
author_facet	Pedrosa Pàmies, Rut Parinos, C. Sanchez-Vidal, Anna Calafat Frau, Antoni Canals Artigas, Miquel Velaoras, D. Mihalopoulos, N. Kanakidou, M. Lampadariou, N. Gogou, A.
author_role	author
author2	Parinos, C. Sanchez-Vidal, Anna Calafat Frau, Antoni Canals Artigas, Miquel Velaoras, D. Mihalopoulos, N. Kanakidou, M. Lampadariou, N. Gogou, A.
author2_role	author author author author author author author author author
dc.subject.none.fl_str_mv	Geologia submarina Fons marins Mediterrània (Mar) Geoquímica orgànica Submarine geology Ocean bottom Mediterranean Sea Organic geochemistry
topic	Geologia submarina Fons marins Mediterrània (Mar) Geoquímica orgànica Submarine geology Ocean bottom Mediterranean Sea Organic geochemistry
description	Sinking particles are a critical conduit for the export of organic material from surface waters to the deep ocean. Despite their importance in oceanic carbon cycling, little is known about the biotic composition and seasonal variability of sinking particles reaching abyssal depths. Herein, sinking particle flux data, collected in the deep Ierapetra Basin for a three-year period (June 2010 to June 2013), have been examined at the light of atmospheric and oceanographic parameters and main mass components (lithogenic, opal, carbonates, nitrogen, and organic carbon), stable isotopes of particulate organic carbon (POC) and source-specific lipid biomarkers. Our aim is to improve the current understanding of the dynamics of particle fluxes and the linkages between atmospheric dynamics and ocean biogeochemistry shaping the export of organic matter in the deep Eastern Mediterranean Sea. Overall, particle fluxes showed seasonality and interannual variability over the studied period. POC fluxes peaked in spring April-May 2012 (12.2 mg m−2 d−1) related to extreme atmospheric forcing. Summer export was approximately fourfold higher than mean wintertime, fall, and springtime (except for the episodic event of spring 2012), fueling efficient organic carbon sequestration. Lipid biomarkers indicate a high relative contribution of natural and anthropogenic, marine- and land-derived POC during both spring (April-May) and summer (June-July) reaching the deep-sea floor. Moreover, our results highlight that both seasonal and episodic pulses are crucial for POC export, while the coupling of extreme weather events and atmospheric deposition can trigger the influx of both marine labile carbon and anthropogenic compounds to the deep Levantine Sea. Finally, the comparison of time series data of sinking particulate flux with the corresponding biogeochemical parameters data previously reported for surface sediment samples from the deep-sea shed light on the benthic-pelagic coupling in the study area. Thus, this study underscores that accounting the seasonal and episodic pulses of organic carbon into the deep sea is critical in modeling the depth and intensity of natural and anthropogenic POC sequestration, and for a better understanding of the global carbon cycle.
publishDate	2021
dc.date.none.fl_str_mv	2021
dc.type.none.fl_str_mv	info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion
format	article
status_str	publishedVersion
dc.identifier.none.fl_str_mv	https://hdl.handle.net/2445/174947
url	https://hdl.handle.net/2445/174947
dc.language.none.fl_str_mv	Inglés
language_invalid_str_mv	Inglés
dc.relation.none.fl_str_mv	Reproducció del document publicat a: https://doi.org/10.3389/feart.2021.591948 Frontiers in Earth Science, 2021, vol. 9, num. 591948, p. 1-27 https://doi.org/10.3389/feart.2021.591948
dc.rights.none.fl_str_mv	cc-by (c) Pedrosa Pàmies, Rut et al., 2021 http://creativecommons.org/licenses/by/3.0/es info:eu-repo/semantics/openAccess
rights_invalid_str_mv	cc-by (c) Pedrosa Pàmies, Rut et al., 2021 http://creativecommons.org/licenses/by/3.0/es
eu_rights_str_mv	openAccess
dc.format.none.fl_str_mv	application/pdf
dc.publisher.none.fl_str_mv	Frontiers Media
publisher.none.fl_str_mv	Frontiers Media
dc.source.none.fl_str_mv	Articles publicats en revistes (Dinàmica de la Terra i l'Oceà) reponame:Dipòsit Digital de la UB instname:Universidad de Barcelona
instname_str	Universidad de Barcelona
reponame_str	Dipòsit Digital de la UB
collection	Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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Atmospheric and Oceanographic Forcing Impact Particle Flux Composition and Carbon Sequestration in the Eastern Mediterranean Sea: A Three-Year Time-Series Study in the Deep Ierapetra Basin.

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