Distribution of modern dinocysts and pollen in the western Mediterranean Sea (Algerian Margin and Gulf of Lion)

The Mediterranean Sea is generally described as an oligotrophic area where primary productivity is limited to a few coastal environments with nutrient-enriched fluvial input. However, several studies have revealed that the hydrology of the western Mediterranean has major seasonal productive patterns linked either to significant riverine input or to seasonal upwelling cells. This study aims to: i) discuss organic microfossils (i.e. pollen and dinoflagellate cyst assemblages, as well as other non-pollen palynomorphs) from two different productive areas of the western Mediterranean Sea, and ii) examine the importance of the interconnections between marine and continental influences responsible for modern palynomorph distributions. Based on 25 samples from the Gulf of Lion (GoL) and Algerian Margin, this study key findings are: i) that GoL marine productivity is driven by the combination of discharges from the Rhône River and seasonal upwelling mechanisms, ii) that the strong productive pattern of the northern African coast is driven by water density front mixings and related upwellings. These two patterns are discussed in the light of major links that provide a better understanding of the signatures of marine and continental bio-indicators. The dinocyst Lingulodinium machaerophorum can be considered as a tracer of Rhône River plume influence in the GoL. Brigantedinium taxa are shown to be upwelling-sensitive in both studied areas. Typical differences in vegetation across the north–south climate gradient in the western Mediterranean Basin are highlighted by the larger ratio of Euro-Siberian to Mediterranean pollen taxa in the northern sector. Synoptic maps also illustrate the complex interactions of environmental drivers determining the distributions of continental and marine palynomorphs in the western Mediterranean Sea.

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Date (Publication)
2022
Date (Revision)
2022-08-17
Other citation details

Coussin Vincent, Penaud Aurelie, Combourieu-Nebout Nathalie, Peyron Odile, Schmidt Sabine, Zaragosi Sebastien, de Vernal Anne, Babonneau Nathalie (2022). Distribution of modern dinocysts and pollen in the western Mediterranean Sea (Algerian Margin and Gulf of Lion). SEANOE. https://doi.org/10.17882/87317

In addition to properly cite this dataset, it would be appreciated that the following work(s) be cited too, when using this dataset in a publication :

Coussin V., Penaud A., Combourieu-Nebout N., Peyron O., Schmidt S., Zaragosi S., de Vernal A., Babonneau N. (2022). Distribution of modern dinocysts and pollen in the western Mediterranean Sea (Algerian margin and Gulf of Lion). Marine Micropaleontology, 175. https://doi.org/10.1016/j.marmicro.2022.102157

Credit
This work was part of a PhD thesis (Coussin V.) financed by the Région Bretagne and UBO (University of Brest). This work was supported by the French national programme (CNRS) LEFE-EC2CO (‘DATAPOL’), by the ‘ISblue’ project (Interdisciplinary graduate school for the blue planet; ANR-17-EURE-0015), and was co-funded by a grant from the French government under the program Investissements d'Avenir. We thank the captains, crews and scientific teams of the cruises that collected studied cores: GMO1 (Pierre Cochonat, Bernard Dennielou), GMO2-CARNAC (Nabil Sultan, Michel Voisset), BEACHMED (Catherine Satra Le Bris) and RHOSOS (Serge Berné, Bernard Dennielou). We also thank the Ifremer for access to the sedimentology laboratory and Marion Genet for the sample sharing. We acknowledge the ANR BRAISE project, grant ANR-19-CE01-0001-01, for the funding of the 210Pbxs measurements of the Gulf of Lion sediments. We thank Yannick Miras for his help with the determination of non-pollen palynomorphs and discussion about their ecological signature.
Author
  Univ Brest, CNRS, Ifremer, Geo-ocean, UMR6538, F-29850 Plouzané, France - Coussin Vincent
Author
  Univ Brest, CNRS, Ifremer, Geo-ocean, UMR6538, F-29850 Plouzané, France - Penaud Aurelie
Author
  HNHP, CNRS, UMR 7194, Département de Préhistoire du Muséum d’Histoire Naturelle, F-75013 Paris, France - Combourieu-Nebout Nathalie
Author
  Univ Montpellier, CNRS, UMR 5554, Institut des Sciences de l’Evolution de Montpellier (ISEM), 34095 Montpellier cedex 05, France - Peyron Odile
Author
  Univ Bordeaux, CNRS, UMR 5805 Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC), F-33615 Pessac, France - Schmidt Sabine
Author
  Univ Bordeaux, CNRS, UMR 5805 Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC), F-33615 Pessac, France - Zaragosi Sebastien
Author
  Geotop, Université du Québec à Montréal (UQAM), 201 Avenue du Président Kennedy, Montréal, Québec, H3C 3P8, Canada - de Vernal Anne
Author
  Univ Brest, CNRS, Ifremer, Geo-ocean, UMR6538, F-29850 Plouzané, France - BABONNEAU Nathalie
Publisher
  SEANOE
Theme
  • western Mediterranean Sea
  • Gulf of Lion
  • Algerian Margin
  • dinoflagellate cysts
  • productivity
  • fluvial discharge
  • upwelling cells
  • pollen and spores
  • vegetation gradients
  • non-pollen palynomorphs
  • Marine geology
ODATIS aggregation parameters and Essential Variable names
SeaDataNet Parameter Disciplines
Type de jeux de donnée ODATIS
Use limitation
CC-BY (Creative Commons - Attribution)
Use constraints
Other restrictions
Date (Publication)
2022
Publisher
  Elsevier BV
Author
  Coussin V.
Author
  Penaud A.
Author
  Combourieu-Nebout N.
Author
  Peyron O.
Author
  Schmidt S.
Author
  Zaragosi S.
Author
  de Vernal A.
Author
  Babonneau N.
Unique resource identifier
10.1016/j.marmicro.2022.102157
Association Type
Cross reference
Initiative Type
Study
Date (Publication)
2022
Publisher
  Elsevier
Author
  Coussin Vincent
Author
  Penaud A.
Author
  Combourieu-Nebout N.
Author
  Peyron O.
Author
  Schmidt S.
Author
  Zaragosi S.
Author
  de Vernal A.
Author
  Babonneau Nathalie
Unique resource identifier
10.1016/j.marmicro.2022.102157
Association Type
Cross reference
Initiative Type
Study
Unique resource identifier
10.17600/4020010
Association Type
Cross reference
Initiative Type
Platform
Unique resource identifier
10.17600/1020040
Association Type
Cross reference
Initiative Type
Platform
Unique resource identifier
10.17600/2020080
Association Type
Cross reference
Initiative Type
Platform
Unique resource identifier
10.17600/3020100
Association Type
Cross reference
Initiative Type
Platform
Unique resource identifier
10.17600/5020080
Association Type
Cross reference
Initiative Type
Platform
Unique resource identifier
10.17600/7010090
Association Type
Cross reference
Initiative Type
Platform
Unique resource identifier
10.17600/13010050
Association Type
Cross reference
Initiative Type
Platform
Unique resource identifier
10.17600/8020040
Association Type
Cross reference
Initiative Type
Platform
Metadata language
English
Topic category
  • Oceans
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  • XLS, XLSX ( )

OnLine resource
Raw data ( WWW:DOWNLOAD-1.0-link--download )

Datation data, used environmental parameters and palynological data (rough counts) - 42 KB

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DOI of the product ( WWW:LINK-1.0-http--metadata-URL )
OnLine resource
Seanoe ( rel-canonical )
Hierarchy level
Dataset
Statement
Datation data of the study samples, exctracted and used environmental parameters at samples coordinates (from Levitus.org), palynological counts for dinoflagellates cysts and pollen
File identifier
seanoe:87317 XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2022-08-17
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
1.0
Point of contact
  Univ Brest, CNRS, Ifremer, Geo-ocean, UMR6538, F-29850 Plouzané, France - Coussin Vincent
 
 

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Keywords

Algerian Margin Gulf of Lion Marine geology dinoflagellate cysts fluvial discharge non-pollen palynomorphs pollen and spores productivity upwelling cells vegetation gradients western Mediterranean Sea
ODATIS aggregation parameters and Essential Variable names
Nutrients Phytoplankton Suspended matter
Type de jeux de donnée ODATIS
/Observational data/in-situ

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