Processes driving seagrass soils composition along the western Mediterranean: The case of the southeast Iberian Peninsula

Seagrasses are distributed all along the coast of the Mediterranean Sea being Posidonia oceanica and Cymodocea nodosa the most common species. They promote sedimentation, leading to the formation of well-structured soils. Over the last decade, a growing attention has been paid to their role as CO2 s...

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Autores: Piñeiro Juncal, Nerea, Díaz-Almela, Elena, Leiva-Dueñas, Carmen, Deulofeu, Ona, Frigola, Jaime, Soler Roig, Montserrat, Martínez Cortizas, Antonio, Giralt, Santiago, García-Orellana, Jordi, Mateo, Miguel Ángel
Tipo de recurso: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2021
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/227117
Acceso en línea:http://hdl.handle.net/10261/227117
Access Level:acceso abierto
Palabra clave:Seagrass sediments
Subaquatic soils
Pedogenetical processes
Coastal zones
Blue carbon
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spelling Processes driving seagrass soils composition along the western Mediterranean: The case of the southeast Iberian PeninsulaPiñeiro Juncal, NereaDíaz-Almela, ElenaLeiva-Dueñas, CarmenDeulofeu, OnaFrigola, JaimeSoler Roig, MontserratMartínez Cortizas, AntonioGiralt, SantiagoGarcía-Orellana, JordiMateo, Miguel ÁngelSeagrass sedimentsSubaquatic soilsPedogenetical processesCoastal zonesBlue carbonSeagrasses are distributed all along the coast of the Mediterranean Sea being Posidonia oceanica and Cymodocea nodosa the most common species. They promote sedimentation, leading to the formation of well-structured soils. Over the last decade, a growing attention has been paid to their role as CO2 sinks in the form of organic carbon (Corg) and to their use as environmental archives. However, most of the knowledge about pedogenetic processes in these soils refer to the rhizosphere. This study aims to understand seagrass soils biogeochemistry in the rhizosphere and below, which in turn can help to understand their long term formation processes. Fifteen cores were strategically sampled along a 350km stretch of the Southeast Iberian coast, and analyzed for elemental composition (XRF core-scanning), magnetic susceptibility, Corg content and gran size distribution. The cores were dated by 210Pb and 14C-AMS techniques to estimate soil accretion. Principal component analysis was used to explore the main geochemical processes linked to soil formation. The results showed that terrestrial runoff plays a key role in meadow soil composition. Furthermore, Corg accumulation did not follow any general depth trend in our soil records, suggesting that temporal variation in Corg inputs is an important factor in determining carbon depth distribution within the soil. We obtained evidence that the establishment of well-developed, stable C. nodosa meadows in the Mediterranean Sea may be promoted by adverse environmental conditions to P. oceanica settlement. Metal's behavior within the meadow deposit and their interaction with organic matter and carbonates is unclear. The results presented in this paper highlight the importance of the influence of land-based inputs in the characteristics of seagrass meadow deposits, highly determining their Corg content, as well as the need for further studies on metal behavior, to understand their full potential as environmental records. Copyright © 2020 Elsevier B.V. All rights reserved.This research was funded by the LIFE BLUE NATURA project (LIFE14CCM/ES/000957). Carmen Leiva-Dueñas was supported by a PhD scholarship funded by the Spanish Ministry of Science, Innovation and Universities (FPU15/01934). This is a paper of the Group of Benthic Ecology 2014 SGR 120 in collaboration with the 2017 SGR 1588.Peer reviewedElsevier BVMinisterio de Ciencia, Innovación y Universidades (España)Giralt, Santiago [0000-0001-8570-7838]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202120212021info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Preprintinfo:eu-repo/semantics/submittedVersionhttp://hdl.handle.net/10261/227117reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1016/j.scitotenv.2020.144352Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2271172026-05-22T06:33:51Z
dc.title.none.fl_str_mv Processes driving seagrass soils composition along the western Mediterranean: The case of the southeast Iberian Peninsula
title Processes driving seagrass soils composition along the western Mediterranean: The case of the southeast Iberian Peninsula
spellingShingle Processes driving seagrass soils composition along the western Mediterranean: The case of the southeast Iberian Peninsula
Piñeiro Juncal, Nerea
Seagrass sediments
Subaquatic soils
Pedogenetical processes
Coastal zones
Blue carbon
title_short Processes driving seagrass soils composition along the western Mediterranean: The case of the southeast Iberian Peninsula
title_full Processes driving seagrass soils composition along the western Mediterranean: The case of the southeast Iberian Peninsula
title_fullStr Processes driving seagrass soils composition along the western Mediterranean: The case of the southeast Iberian Peninsula
title_full_unstemmed Processes driving seagrass soils composition along the western Mediterranean: The case of the southeast Iberian Peninsula
title_sort Processes driving seagrass soils composition along the western Mediterranean: The case of the southeast Iberian Peninsula
dc.creator.none.fl_str_mv Piñeiro Juncal, Nerea
Díaz-Almela, Elena
Leiva-Dueñas, Carmen
Deulofeu, Ona
Frigola, Jaime
Soler Roig, Montserrat
Martínez Cortizas, Antonio
Giralt, Santiago
García-Orellana, Jordi
Mateo, Miguel Ángel
author Piñeiro Juncal, Nerea
author_facet Piñeiro Juncal, Nerea
Díaz-Almela, Elena
Leiva-Dueñas, Carmen
Deulofeu, Ona
Frigola, Jaime
Soler Roig, Montserrat
Martínez Cortizas, Antonio
Giralt, Santiago
García-Orellana, Jordi
Mateo, Miguel Ángel
author_role author
author2 Díaz-Almela, Elena
Leiva-Dueñas, Carmen
Deulofeu, Ona
Frigola, Jaime
Soler Roig, Montserrat
Martínez Cortizas, Antonio
Giralt, Santiago
García-Orellana, Jordi
Mateo, Miguel Ángel
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia, Innovación y Universidades (España)
Giralt, Santiago [0000-0001-8570-7838]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Seagrass sediments
Subaquatic soils
Pedogenetical processes
Coastal zones
Blue carbon
topic Seagrass sediments
Subaquatic soils
Pedogenetical processes
Coastal zones
Blue carbon
description Seagrasses are distributed all along the coast of the Mediterranean Sea being Posidonia oceanica and Cymodocea nodosa the most common species. They promote sedimentation, leading to the formation of well-structured soils. Over the last decade, a growing attention has been paid to their role as CO2 sinks in the form of organic carbon (Corg) and to their use as environmental archives. However, most of the knowledge about pedogenetic processes in these soils refer to the rhizosphere. This study aims to understand seagrass soils biogeochemistry in the rhizosphere and below, which in turn can help to understand their long term formation processes. Fifteen cores were strategically sampled along a 350km stretch of the Southeast Iberian coast, and analyzed for elemental composition (XRF core-scanning), magnetic susceptibility, Corg content and gran size distribution. The cores were dated by 210Pb and 14C-AMS techniques to estimate soil accretion. Principal component analysis was used to explore the main geochemical processes linked to soil formation. The results showed that terrestrial runoff plays a key role in meadow soil composition. Furthermore, Corg accumulation did not follow any general depth trend in our soil records, suggesting that temporal variation in Corg inputs is an important factor in determining carbon depth distribution within the soil. We obtained evidence that the establishment of well-developed, stable C. nodosa meadows in the Mediterranean Sea may be promoted by adverse environmental conditions to P. oceanica settlement. Metal's behavior within the meadow deposit and their interaction with organic matter and carbonates is unclear. The results presented in this paper highlight the importance of the influence of land-based inputs in the characteristics of seagrass meadow deposits, highly determining their Corg content, as well as the need for further studies on metal behavior, to understand their full potential as environmental records. Copyright © 2020 Elsevier B.V. All rights reserved.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021
2021
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/10261/227117
url http://hdl.handle.net/10261/227117
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1016/j.scitotenv.2020.144352
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier BV
publisher.none.fl_str_mv Elsevier BV
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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score 15,81155

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