Colloquium


Terms of reference

Oceanic primary production is a key component of the marine carbon, oxygen and nutrient cycles as well as the base of the marine food web. Over the past two decades, substantial efforts were deployed to evaluate oceanic primary production. These efforts include in situ measurements of uptake rates using isotopic trace techniques, satellite remote sensing, autonomous instrumentation for bio-optics, carbon or oxygen measurements, and the development of semi-empirical to complex biogeochemical models.

The 45th International Liege Colloquium on Ocean Dynamics will investigate new insights related to the evaluation of primary production and the study of the dynamics between physical forcing and ocean productivity responses at various physical and temporal scales. Particular attention will be focused on the variability at the synoptic to seasonal scales and how it complicates our ability to sample primary production and derive large-scale, climate-driven primary production budgets.

More specifically, the following topics will be covered:

  • Importance of physical factors, such as transport and mixing, controlling light limitation and nutrient supply
  • Primary production spatial variability: from the sub-mesoscale to the global scale
  • Primary production temporal variability: from season to century-scale
  • Progress in in-situ evaluation, resolution of in-situ data
  • Progress in primary production retrieval from space (e.g. algorithms dealing with Case II waters and PFT distribution)
  • Fate of primary produced material
  • Ocean PP variability: bottom up versus top down control (e.g. role of viruses, grazing, scavenging)
  • Progress in biogeochemical models in relation to phytoplankton physiology, the representation of variable stoichiometric ratios, the role of mixotrophy.
  • Biodiversity of primary producers as addressed by in-situ measurements, satellite data and biogeochemical models
  • interoperability of in-situ, satellite and modelling estimates of primary production
  • Primary production in polar regions and sea-ice, coastal versus deep ocean processes,
  • Impact of benthic Habitat (e.g. seagrass coral) on primary production and importance of benthic diagenetic processes on pelagic primary production.

Thematic sessions and Keynote talks

  • Opening Keynote talk by John Marra
  • Primary Production in the Arctic Ocean (convener: Marcel Babin, Keynote: Eddy Carmack)
  • Primary Production in the Antarctic Ocean (convener: Pedro Monteiro, Keynote: Mchael Bender)
  • Primary Production in sea-Ice (convener: David Thomas, Keynote CJ Mundy)
  • Phytoplankton Functional Types (convener: Shubha Sathyendranath, Keynote : Mike Follows)
  • Benthic- pelagic coupling (conveners: M. Vichi, P. Régnier: Keynote: Sandra Arndt)
  • Primary production variability and coastal-offshore export in upwelling regions (IMBER session, convener Javier Arístegui: Keynote: Francisco Chavez)
  • Impact of meso/submesoscale on Primary Production (convener: Marina Lévy, Keynote: Amala Mahadevan)
  • Modelling (convenor: Marilaure Grégoire)
  • Field estimates of Primary Production (convener, John Marra, Keynote: Emilio Marañòn)
  • Satellite (convenor: Gavin Tilstone)

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List of participants

The list of participants click here for a description

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Scientific Organizing Committee

  • Icarus Allen (UK)
  • Javier Arístegui (Spain)
  • Marcel Babin (Canada)
  • Michael Bender (USA)
  • Laurent Bopp(France)
  • Alberto Borges (Belgium)
  • Pierre Brasseur (France)
  • Peter Franks (USA)
  • Marion Gehlen (France)
  • Marilaure Grégoire (Belgium)
  • Nathalie Gypens (Belgium)
  • Pierre Lermusiaux (USA)
  • Julien LeSommer (France)
  • Marina Lévy (France)
  • John Marra (USA)
  • Adrian Martin (UK)
  • Richard Matear (Australia)
  • Pedro Monteiro (South Africa)
  • Pierre Régnier (Belgium)
  • Rui Santos (Portugal)
  • Vedula.V.S.S. Sarma (India)
  • Shubha Sathyendranath (UK)
  • Karline Soetaert (The Netherlands)
  • Frede Thingstad (Norway)
  • David Thomas (UK)
  • Gavin Tilstone (UK)
  • Marcello Vichi (Italy)
  • Sinjae Yoo (Korea)

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  • 13 March 2013: decision of the Scientific organizing committee of accepted abstracts
  • 31 March 2013: preliminary program will be sent to registered participants
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    Program

    Program 2013

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    Abstracts

    Online Presentations

    Opening Talk: John Marra

    Ocean Productivity: A Personal Perspective

    Session 1 : Primary Production in the Arctic Ocean

    Convener: M. Babin

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    Keynote: E. Carmack

    Processes Affecting Primary Productivity in the Arctic Ocean: an Overview and Perspective

    Henson S., H. Cole, C. Beaulieu, A. YooL

    The impact of global warming on seasonality of ocean primary production

    Vancoppenolle M., Bopp L., Madec G., Dunne J., Ilyina T., Halloran P., Steiner N.

    Future Arctic Primary Productivity from CMIP5 Simulations: Uncertain Outcome, but Consistent Mechanisms

    Spitz Y. H., Ashjian C. J., Campbell R. G., Steele M., Zhang J.

    Western Arctic Ocean Primary Productivity Changes over the Last Three Decades and in the Future: not a Simple Story

    Stanley R. H. R., Sandwith Z. O., Williams W. J.

    Rates of Summertime Biological Productivity in the Beaufort Gyre: A Comparison between the Record-Low Ice Conditions of August 2012 and Typical Conditions of August 2011

    Juul-Pedersen T, K Engel Arendt, J Mortensen, M Blicher, S Rysgaard

    A 6-year study of pelagic primary production in a freshwater influenced sub-Arctic fjord system – with a view to the past

    Session 2 : Primary Production in the Antarctic Ocean

    Convener: P. Monteiro

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    Keynote: M. Bender

    On the small range of net community production rates in the open ocean

    Blain S.

    What is the upper limit for primary production in the Southern Ocean?

    Castro-Morales K., Cassar N., Kaiser J.

    Biological production and the influence of vertical physical processes in the Bellingshausen Sea, Southern Ocean

    Cavagna A.-J., Dehairs F., Jacquet S., Planchon F.

    Primary production and potential for carbon export in naturally iron-fertilized waters in the Southern Ocean

    Joubert W, Thomalla S, Swart S and Monteiro PMS

    The Sensitivity of the Seasonal Cycle of Phytoplankton Productivity to sub-Seasonal Mixed Layer Dynamics in the Sub-Antarctic Region

    Tagliabue A, J-B Sallée, A Bowie, P Boyd, M Lévy, S Swart

    Towards Reconciling Iron Supply and Demand in the Southern Ocean

    Sallée J-B, Llort J., Tagliabue A., Lesommer J., Lévy M.

    Towards understanding the spatial variability of bloom onset in the Southern Ocean

    Shadwick E. H., Cassar N., Tilbrook B., Trull T.

    Influence of net community production and physical processes on surface oxygen and carbon distribution along a north-south section across the Australian Sector of the Southern Ocean

    Swart S., Thomalla S. J., Monteiro P. M. S.

    Resolving the seasonal cycle of mixed layer physics and phytoplankton biomass in the Sub-Antarctic Zone using high resolution glider data

    Trull T., Weeding B., Davies D., Bray S., Jansen P.

    Productivity estimates from hourly automated measurements at the Australian Southern Ocean Time Series site

    Session 3 : Primary Production in sea-Ice

    Convener: D. Thomas

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    Keynote: C.J. Mundy

    Arctic spring: key processes influencing timing of primary producers in ice-covered waters

    Meiners K. M., M. Vancoppenolle, S. Thanassekos, Dieckmann G. S., D. N. Thomas , J.-L. Tison, K. R. Arrigo, D. L. Garrison, A. McMinn, D. Lannuzel, P. Van Der Merwe, K. M. Swadling, W. O. Smith JR., I. Melnikov, B. Raymond

    Chlorophyll a in Antarctic sea ice from historical ice core data

    Tedsco L., M. Vichi, H. Kaartokallio

    Sea ice biogeochemistry: a guide for marine ecosystem modellers

    Fernánde-Méndez M., I.Peeken, A.Boetius

    New estimates of primary productivity and its limiting factors in the Central Arctic

    Session 4 : Phytoplankton Functional Types

    Convener: S. Sathyendranath

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    Keynote: M. Follows

    Traits and trade-offs that shape diverse phytoplankton populations

    Anabalón V., J. Arístegui, C.E. Morales, I. Andrade, M. BenavIdes, M. Correa-ramírez, M. Espino, O. Ettahiri, S. Hormazabal, A. MakaoIu, M.F. Montero, A. OrbI

    The structure of planktonic communities under variable coastal upwelling conditions off Cape Ghir (31ºN), in the Canary Current System (NW Africa)

    Bouman H. A., S. Sathyendranath, T. Platt

    Environmental Controls on Phytoplankton Photophysiology and Community Structure in Temperate Coastal and ShelfWaters

    Bretherton L. M. J., T. Lawson, C. M. Moore, A. Poulton, R. J. Geider, D. J. Suggett

    Light availability affects the ocean acidification response in coccolithophores

    Bruggeman J., K.W. Wirtz

    Phytoplankton plasticity controls long-term variability: lessons from a lake

    Dufosse F., V. Gentilhomme, F. Goulard, E. Breton, N. Degros, S. Lefebvre

    Impact of nutrient limitation on the productivity of three functional groups of marine phytoplankton: experimental approach

    Huete-Ortega M., P. Cermeño, A. Fernández, B. Fernández-Castro, N. González, D. López-Sandoval, B. Mouriño-Carballid, C. Sobrino, E. Marañòn

    Environmental control on phytoplankton size-fractionated primary production in the tropical and subtropical Atlantic, Indian and Pacific oceans

    Lew S., A. Martin, T. Anderson, M. Zubkov

    Multiple use of light energy by open ocean keystone cyanobacteria: A modelling study

    Nicholson D., S. Doney, R. Stanley, I. Lima

    Dissolved gas tracers of gross primary production and net community production: perspectives from a global ecosystem and biogeochemistry model.

    Palacz A.P., M.A. St. John, R.J.W. Brewin, T. Hirata

    Distribution of phytoplankton functional types in high-nitrate low-chlorophyll waters in a new diagnostic ecological indicator model

    Sathyendranath S., V. Stuart, H. Bouman, T. PLatt

    Field measurements of bio-optical properties of phytoplankton types for use in primary production models

    Hickman AE, S Dutkiewicz, O Jahn, WW Gregg, MJ Follows

    The role of light for phytoplankton distributions and productivity

    Borchard, C., Wurst, M. and Engel, A.

    Particulate and size-fractionated dissolved primary production derived from Emiliania huxleyi

    Terseleer N., J. Bruggeman, C. Lancelot, N. Gypens

    Trait-based representation of diatom diversity in a Plankton Functional Type model

    Session 5: Benthic- pelagic coupling

    Convener: M. Vichi & P. Regnier

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    Keynote: S. Arndt

    An integrative view of the biological carbon pump: from the surface ocean to the deep sediment

    Borges AV, Champenois W

    Seasonal and inter-annual variations of gross primary production, community respiration, and net community production of a i seagrass meadow

    Closset I., D. Cardinal, F. Thil, S. Bray, T. Trull

    Seasonal variation, origin and fate of settling diatoms in the Southern Ocean tracked by silicon isotope record in deep sediment traps

    Martini E, Desmit X, Lacroix G, Kerckhof F, Degraer S

    Assessing bivalve‘s distribution as a response to phytoplankton/inorganic suspended particles ratio in the Belgian Coastal zone: a trait based model.

    J. Harlay, L. Chou, K. Sabbe, N. Van Oostende, A. Engel, J. Piontek and A. Borges

    Coccolithophore blooms in the Bay of Biscay: Results from the PEACE project

    Stegert C., L. Memery, T. Gorgues, J. Deshayes

    Up or down – Modeling the fates and rates of phytoplankton carbon in the North Atlantic Ocean

    Capet A., M. Grégoire, J.-M. Beckers, F. Meysman, K. Soetart

    Introducing dynamic benthic fluxes in 3D biogeochemical model : an application on the Black Sea North-Western shelf

    Pena A., D. Masson

    The role of physical factors in determining the variability and fate of primary production in the Strait of Georgia: A biophysical model study

    Session 6: Primary production variability and coastal-offshore export in upwelling regions (IMBER Session)

    Convener: J. Arístegui

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    Keynote: F. Chavez

    Climate driven variations in the source and fate of primary production in coastal upwelling systems

    Arístegui J., X.A. Álvarez-Salgado, F. Alonso-Pérez, V. Anabalón, F. Baltar, M. Benavides, M. Espino, F.G. Figueiras, M. Froján, R. Graña, M.F. Montero, X.A. Padí N, F.F. Pérez, T. Reinthaler, A.F. Ríos, G. Rosó N, P. Sangrá, I.G. Texeira, C. Troupin, E.D. Barton

    Variability in primary production, carbon stocks and fluxes, plankton community structure and metabolic balance, along the Cape Guir filament (NW Africa): A lagrangian approach

    Castro C.G., B. Arbones, X.A. Alvarez-Salgado, F. Alonso-Pérez, M. Frojáan, D. Zúñiga, I.G. Teixeira, F.G. Figueiras

    Net ecosystem metabolism in the NW Iberian Upwelling System on an annual cycle

    Figueiras F.G., O. Espinoza-González, B. Arbones, I.G. Teixeira, C.G. Castro

    Estimating phytoplankton size-fractionated primary production in the NW Iberian margin: is mixotrophy relevant in pigmented nanoplankton?

    García-García L. M., M. Ruiz-Villarreal, P. Otero

    Modeling the spring bloom in North and North West Iberia by means of a N2PZD2 model

    Greenwood J., R. Matear, C. Sun, J. McLaughlin

    Impact of submesocale upwelling on phytoplankton production along an oligotrophic boundary current

    Hosegood, P. J., Torres, R. J.

    Nutrient pumping by submesoscale instabilities in the Mauritanian upwelling system

    Messié M., F. P. Chavez

    Regulation of seasonal primary production in eastern boundary upwelling systems

    Morales C.E., S. Hormazabal, I. Andrade, M. Correa-Ramirez

    High resolution time-space variability of satellite chlorophyll-a in the coastal and coastal transition zones off central-southern Chile (33-42ºS)

    Session 7 : Impact of meso/submesoscale on Primary Production

    Convener: M. Lévy

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    Keynote: A. Mahadevan

    Impact of meso- and submeso-scale dynamics on primary production

    Ayata S.-D., O. Bernard, O. Aumont, A. Tagliabue, A. Sciandra, M. Lévy

    Effects of photo-acclimation and variable stoichiometry of phytoplankton on production estimates from 1D and 3D marine ecosystem modelling

    DOvidio F

    The structuring role of horizontal stirring on primary production

    Gaube P., D. Chelton, D. McGillicuddy

    Regional Variability of the Observed Influence of Mesoscale Ocean Eddies on Near-Surface Chlorophyll

    Hardman-Mountford N, C Robinson, R Torres, T Smyth, I Brown, V Kitidis, P Serret, P Nightingale

    Quantifying competing carbon pathways in mesoscale upwelling filaments off NW Africa

    Jonsson B, J Salisbury, A Mahadevan

    Episodicity in Phytoplankton Dynamics on Regional and Global Scales

    Martin A.P., R.E.M. Pidcock, J.T. Allen, S.C. Painter, M.A. Srokosz

    Quantifying the mesoscale influence on primary production in the field

    Matear R

    Climate change projection of phytoplankton concentrations and primary production using an eddy-resolving ocean model

    McKiver W. J., M. Vichi, T. Lovato, A. Storto, S. Masina

    Enhancement of primary production at greater resolved scales: results from the GreenSeas project

    Session 8 : Modelling

    Convener: M. Grégoire

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    Arteaga L., M. Pahlow, A. Oschilies

    Estimating global-ocean primary production, and nutrient-light colimitation by combining remote-sensing data with an optimality-based phytoplankton model

    Daewel U, C Schrum, D Pushpadas

    Processes relevant for multi-decadal changes in primary production in the North Sea and Baltic Sea: hindcast and scenario modelling

    Grosse F, J O. Backhaus, J Pätsch, B Walter

    Parameterising primary production and convection in a 3D model

    Lévy M. and Martin A. P.

    On the magnitude of Primary Production Reynolds effects in the open ocean

    Cossarini G. Lazzari P. and Solidoro C.

    Primary production and the carbonate system in the Mediterranean Sea

    Muacho S., J.C.B. Da Silva, V. Brotas, P.B. Oliveira

    Internal tidal waves effects on near-surface chlorophyll concentration and primary production around Nazaré Canyon (western Portugal) and in the central region of the Bay of Biscay

    Prowe AEF, Andersen KH, T Kiorboe, AW Visser

    Zooplankton feeding traits and community composition in a global ecosystem model

    Völker C., Holtz L., Hauck J., Wang T., Wolf-Gladrow D.

    Ground-truthing variable-stoichiometry models

    Session 9 : Field estimates of Primary Production

    Convener: J. Marra

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    Keynote: E. Marañòn

    Patterns in phytoplankton size structure: abundance, biomass and production in coastal and open-ocean waters

    Ferrari R. , G. Flierl, A. Mignot

    Biological and physical triggers of the North Atlantic Spring Bloom

    Jacox M. G., C.A. Edwards, M. Kahru, D. L. Rudnick and R. M. Kudela

    Potential for Improving Primary Productivity Estimates through Subsurface Chlorophyll and Irradiance Measurement

    Kromkamp J C., G Silsbe, J Waanders, J Peene

    Automated FRRF measurements provide an alternative means to obtain seasonal and annual primary producton estimates in the Eastern andWestern Scheldt Estuaries.

    Li Z, N Cassar

    Estimation of Large-scale Net Community Production Patterns based on in-situ O2/Ar Measurements and Remotely Sensed Properties

    Mantikci M., S. Markager, J.L.S. Hansen

    The ratio of dark respiration to maximum photosynthesis and seasonal variability in two marine coastal waters

    Napoléon C., P. Claquin

    Estimation of primary production at high frequency using multi-parametric relationships between PAM measurements and carbon incorporation.

    Peters F., E. Romero, R. Gallisai, O. Guadyol

    The seasonal variability of chlorophyll with special emphasis in the Mediterranean

    Tilstone G, T Smyth, A Rees

    Spatial and temporal variability in satellite estimates of primary production over the Atlantic basin

    Briggs N., M.J. Perry, E. Dásaro, K Gudmundsson, I. Cetiníc, E. Rehm, C. Lee

    Using diel cycles in O2 and particulate organic carbon to estimate primary productivity from a Lagrangian mixed-layer float during the North Atlantic bloom

    Ayers J. M. , P. G. Strutton

    Low latitude export production and its high latitude nutrient sources: interannual variability

    Session 10 : Satellite

    Convener: G. Tilstone

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    Zhongping Lee

    Sensing primary production from ocean color: Puzzle pieces and their status

    Thomas H, S E Craig, B J. W. Greenan, W J. Burt, G J. Herndl, S Higginson, L Salt, E H. Shadwick, J Urrego-Blanco

    Understanding controls of diel patterns of biological CO2 fixation in the North Atlantic Ocean

    Craig S E., H Thomas, C T. Jones, B J. W. Greenan, W K. W. LI, J Sheng, E Shadwick, W Burt

    The effect of seasonality in phytoplankton community composition on carbon uptake on the Scotian Shelf, northwest Atlantic

    Cole H. S., S. A. Henson, A. P. Martin, A. Yool

    Physical drivers of interannual variability in phytoplankton phenology

    Kahru M, M G. Jacox, R M. Kudela, Z Lee, B. G Mitchell

    Optimized multi-satellite merger to create time series of primary production estimates in the California Current

    Lavigne H., F. Dórtenzio, M. Ribera Dálcalà, H. Claustre

    Mixed layer depth variability and phytoplankton phenology in the Mediterranean Sea

    Soccodato A, F Dóvidio, S De Monte

    Biodiversity hotspots of primary producers at the global scale

    Organelli E., A. Bricaud, D. Antoine, J. Uitz

    Retrieval of phytoplankton size classes from light absorption spectra using a multivariate approach

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    Registration fee

    Registration fee for the 45th International Liège Colloquium on Ocean Dynamics is 275 € if payment is received before March 30th, 2013.

    After March 30th, 2013 the registration fee will be 330 €

    Payements can be made by:

    1. BANK Transfer  (see details below)
    2. Cheques, Eurocheques or Cheques on an American Bank in US Dollars. (Add 10% if you pay by cheque!) (See details below)
    3. Visa/Mastercard/American Express/Paypal  (Paypal account is not necessary to go through paypal paiement, see options)
    4. Optional message to organizers
    5. Cash money.

    The registration fee includes :

    Once paid, the registration fee can not be reimbursed

    Bank transfer

    Modelenvironment account: 001-4193631-09

    IBAN: BE52 001419363109
    BIC: GEBABEBB

    BNP Paribas - FORTIS BANQUE:
    rue du Sart Tilman, 373
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    Do not forget to:

    Cheque

    Cheques must be made out to:

    Dr Salim Djenidi
    Modelenvironment
    University of Liège
    Sart Tilman B5a
    4000, Liège
    Belgium

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    • Add 10% if you pay by cheque for bank charges.
    • mention the name of the participant in the bank transfer communication ("firstname & lastname of the participant / Colloquium 2013").

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    Announcement

    Colloquium announcement 2013

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