Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/227117
Share/Export:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Title

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

AuthorsPiñeiro Juncal, Nerea CSIC ORCID CVN ; Díaz-Almela, Elena CSIC ORCID ; Leiva-Dueñas, Carmen; Deulofeu, Ona CSIC ORCID; Frigola, Jaime; Soler Roig, Montserrat CSIC ORCID ; Martinez-Cortizas, Antonio; Giralt, Santiago CSIC ORCID ; García-Orellana, Jordi; Mateo, Miguel Ángel CSIC ORCID
KeywordsSeagrass sediments
Subaquatic soils
Pedogenetical processes
Coastal zones
Blue carbon
Issue DateMay-2021
PublisherElsevier BV
CitationScience of The Total Environment, 768: 144352 (2021)
AbstractSeagrasses 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.
Publisher version (URL)https://doi.org/10.1016/j.scitotenv.2020.144352
URIhttp://hdl.handle.net/10261/227117
DOI10.1016/j.scitotenv.2020.144352
ISSN0048-9697
E-ISSN1879-1026
Appears in Collections:(Geo3Bcn) Artículos
(CEAB) Artículos




Files in This Item:
Show full item record
Review this work

CORE Recommender

SCOPUSTM   
Citations

7
checked on Jul 21, 2024

WEB OF SCIENCETM
Citations

7
checked on Feb 26, 2024

Page view(s)

208
checked on Jul 19, 2024

Download(s)

58
checked on Jul 19, 2024

Google ScholarTM

Check

Altmetric

Altmetric


This item is licensed under a Creative Commons License Creative Commons