Lagrangian Approach to Phytoplankton Mesoscale Biogeography in the Kerguelen Region
Alice Della Penna
(1)
,
Simon Wotherspoon
(1)
,
Thomas W. Trull
(2)
,
Silvia de Monte
(3)
,
Craig Johnson
(1)
,
Francesco d'Ovidio
(4)
Alice Della Penna
- Fonction : Auteur
- PersonId : 976502
Simon Wotherspoon
- Fonction : Auteur
- PersonId : 772515
- ORCID : 0000-0002-6947-4445
Silvia de Monte
- Fonction : Auteur
- PersonId : 178336
- IdHAL : silvia-de-monte
- ORCID : 0000-0001-7953-5494
- IdRef : 174654103
Francesco d'Ovidio
- Fonction : Auteur
- PersonId : 12019
- IdHAL : francescodovidio
- ORCID : 0000-0002-9664-7778
- IdRef : 184536677
Résumé
One of the purposes of biogeography is to identify areas within which a characteristic ecosystem is expected to occur. In the case of phytoplanktonic communities this knowledge is key to separate regions characterized by different biogeochemical processes, design efficient sampling strategies and recognize ecological hotspots. Meso- and submesoscale (1–100 km, few days to months) high variability interacts with typical bloom spatial and temporal scales and makes investigating phytoplankton biogeography challenging especially in remote regions like the Southern Ocean, where in-situ observations are extremely sparse. In this study we use a Lagrangian approach to interpret the mesoscale biogeography of diatom dominance of iron-enriched Kerguelen bloom. We define a “threshold” model relating diatom dominance with Lagrangian properties of water parcels. We find out that, in spite of the simplicity of this approach, the threshold model can reproduce the plume of diatom dominance that can be observed using the ocean color re-analysis PHYSAT.
Domaines
Géophysique [physics.geo-ph]Format du dépôt | Notice |
---|---|
Type de dépôt | Communication dans un congrès |
Résumé |
en
One of the purposes of biogeography is to identify areas within which a characteristic ecosystem is expected to occur. In the case of phytoplanktonic communities this knowledge is key to separate regions characterized by different biogeochemical processes, design efficient sampling strategies and recognize ecological hotspots. Meso- and submesoscale (1–100 km, few days to months) high variability interacts with typical bloom spatial and temporal scales and makes investigating phytoplankton biogeography challenging especially in remote regions like the Southern Ocean, where in-situ observations are extremely sparse. In this study we use a Lagrangian approach to interpret the mesoscale biogeography of diatom dominance of iron-enriched Kerguelen bloom. We define a “threshold” model relating diatom dominance with Lagrangian properties of water parcels. We find out that, in spite of the simplicity of this approach, the threshold model can reproduce the plume of diatom dominance that can be observed using the ocean color re-analysis PHYSAT.
|
Titre |
en
Lagrangian Approach to Phytoplankton Mesoscale Biogeography in the Kerguelen Region
|
Auteur(s) |
Alice Della Penna
1
, Simon Wotherspoon
1
, Thomas W. Trull
2
, Silvia de Monte
3
, Craig Johnson
1
, Francesco d'Ovidio
4
1
IMAS -
Institute for Marine and Antarctic Studies [Hobart]
( 214821 )
- Private bag 129 Hobart TAS 7001
- Australie
2
CSIRO -
Commonwealth Scientific and Industrial Research Organisation [Canberra]
( 300095 )
- GPO Box 1700, Canberra ACT 2600
- Australie
3
Eco-évolution mathématique - IBENS
( 532536 )
- 46 rue d'Ulm
75005 Paris
- France
4
PEPS -
Processus de couplage à Petite Echelle, Ecosystèmes et Prédateurs Supérieurs
( 394358 )
- France
|
Langue du document |
Anglais
|
Vulgarisation |
Non
|
Comité de lecture |
Oui
|
Invité |
Non
|
Audience |
Internationale
|
Actes |
Non
|
Date de publication |
2017
|
Titre de la collection |
Springer Proceedings in Complexity
|
Titre du congrès |
First Complex Systems Digital Campus World E-Conference 2015
|
Date début congrès |
2015-09-28
|
Date fin congrès |
2015-10-02
|
Ville |
Phoenix
|
Pays |
États-Unis
|
URL du congrès ou éditeur |
http://cs-dc-15.org/
|
Éditeur scientifique |
|
Domaine(s) |
|
Voir aussi |
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