Dissolved iron distributions and Fe-limitation C. Guieu & S. Bonnet Laboratoire d’océanographie de Villefranche S. Blain Laboratoire d’océanographie et.

Slides:

Advertisements

Similar presentations

Primary production ( 14 C) and phosphate availability in the south Pacific ocean T. MOUTIN, P. RIMMELIN Laboratoire d Océanographie et de Biogéochimie.

Advertisements

Jacque Kelly University of Hawaii at Manoa. After Oki et al 1999.

Lecture 3 Trace Elements in Seawater What are trace elements? Why are they important? Principal of Oceanographic Consistency. Profiles shapes as clues.

PICODIV RED SEA ANALYSIS Some details of the area: i) continental shelf: 10 m from shore the seafloor drops sharply at station A the depth is 700 m. Can.

Max Jacobson Daniel Sigman Katye Altieri Sarah Fawcett.

JC068 Phytoplankton: Concentrations, Species, and Physiological Status UK-GEOTRACES: Ocean Micronutrient Cycles WP5: Biological responses and cycling of.

UNDERSTANDING OCEAN CHEMISTRY AND BIOLOGY USING REAL-TIME DATA FROM PROFILING FLOATS Kenneth Johnson, George Matsumoto Monterey Bay Aquarium Research Institute.

Nitrogen Isotopes & the biological pump11/8/12 Lecture outline: 1)the nitrogen cycle  15 N overview 3)ocean applications 4)the sedimentary record A.

Nutrient dynamics in the deep blue sea – David M. Karl

Primary production and community structure response to deep seawater enrichment Karin Björkman, PhD OTEC/SWAC meeting 16 September 2011.

Iron fertilization: the biogeochemical basis for carbon sequestration Ken Johnson MBARI.

Ocean Perturbation Experiment (OPEREX) CMORE Cruise, July 30 - August 14, 2008 Objective: To explore the potential and limitations of perturbation experiments.

VOLTAMMETRIC PUMP PROFILING OF O 2, H 2 S AND OTHER DISSOLVED REDUCED SULFUR SPECIES IN THE OXIC/ANOXIC WATER COLUMN OF THE BLACK SEA. S.K. Konovalov and.

Fe, Al and Mn in the Western Equatorial Pacific Zonal and Meridional Distributions of Lia Slemons 1 James Murray 1, Joseph.

Lecture 20 “Preformed” Concentrations Lecture 19 – Summary 1) The concentration of any bioactive element can be considered the sum of preformed and remineralized.

Lecture 3 Trace Metals in Seawater What are trace elements? Why are they important? Principal of Oceanographic Consistency. Profiles shapes as clues for.

OSMOSIS Primary Production from Seagliders April-September 2013 Victoria Hemsley, Stuart Painter, Adrian Martin, Tim Smyth, Eleanor Frajka-Williams.

Absorption properties of marine particles and CDOM: Use of special measurement devices: Ultrapath and PSICAM Marcel Babin Annick Bricaud Edouard Leymarie.

CROZEX- CROZet circulation, iron fertilization and EXport production experiment Three cruises on RRS Discovery: Leg November 2004 to mid-Dec Leg.

SeaHARRE-3 : the third SeaWiFS HPLC Analysis Round Robin Exercise History 2 previous SeaHARRE exercises, coordinated by S. Hooker (NASA) and LOV:  1999:

SEASONAL CHANGES IN BENTHIC FLUXES AND NET ECOSYSTEM METABOLISM IN THE RIA DE VIGO (NW SPAIN) F. Alonso-Pérez, Carmen G. Castro, Zuñiga, D., B. Arbones.

Bacterial production and factors limiting bacterial production BIOSOPE project France Van Wambeke LMGEM, Marseille Villefranche-sur-Mer, presentation 27/01/2004.

Review –Seasonal cycle –spatial variation Food web and microbial loop Eutrophic vs. Oligotrophic food webs Biological pump.

Iron and Biogeochemical Cycles

Coordinator: Liu Xiangjiang 主讲人：刘香江实验性教学项目 An Ecological Survey of Nanhu 南湖生态调查.

What can we learn from natural iron sources ? What can we learn from natural iron fertilization ? ? Iron fertilization symposium WHOI sept 2007 Web.

The distribution of dissolved zinc in the South Atlantic as part of the UK GEOTRACES Programme UK GEOTRACES N. Wyatt 1, A. Milne 1, M. Woodward 2 G. Henderson.

Summary: Within the frame of the TARA expedition, we deployed a Bio-Argo float in the Marquesas plume to investigate and better understand the productivity.

Global connections between aeolian dust, climate and ocean biogeochemistry at the present day and at the last glacial maximum Maher et al., 2010, Earth-Science.

Lead isotopes in South Atlantic seawater from the UK GEOTRACES transect along 40°S Maxence Paul Mark Rehkämper, Tina van de Flierdt, Dominik Weiss.

The Influence of the Indonesian Throughflow on the Eastern Pacific Biogeochimical Conditions Fig.1 The last year of the two runs is used to force offline.

Pre-cruise meeting “Great Belt”-II cruise; R/V Revelle Part I Barney Balch and Ben Twining Bigelow Laboratory for Ocean Sciences, W. Boothbay Harbor, ME.

BIOSOPE CRUISE Laboratoire d’Océanographie et de Biogéochimie Campus de Luminy Marseille cedex 09 Patrick RAIMBAULT Nicole GARCIA Gerd SLAWYK Main.

Basin Scale Variability and Photoreactivity of Chromophoric Dissolved Organic Matter Jenna Robinson 1, Rob Upstill-Goddard 1 & Guenther Uher 1 : Carol.

Fe, Zn, and Cd stable isotopes from the eastern tropical South Pacific from GEOTRACES cruise GP16 – Methods and data Josh Helgoe, Emily Townsend, & Seth.

Sediment trap data. Constraining the seasonal particle flux in the eastern North Atlantic with Thorium isotopes M. Roy-Barman (1), R. El Hayek (1), I.

Intercalibration effort Intercalibration – The process, procedures, and activities used to ensure that the several laboratories engaged in a monitoring.

1 Dynamics of nutrients in the Gdańsk Gulf; numerical simulations.

*Minagawa M, Usui T, Miura Y, Nagao S, Irino T, Kudo I, and Suzuki K, Graduate School of Environmental Science, Hokkaido University, Sapporo ,

Catherine Jeandel, Marseille 2004: Geochemistry in KEOPS Chlorophyll (mg m -3 ) Among the objectives of KEOPS - Identification of the mechanisms of natural.

1 Melting glaciers help fuel productivity hotspots around Antarctica Kevin R. Arrigo Gert van Dijken Stanford University Melting glaciers help fuel productivity.

Lecture 05 Biogeochemical Aspects of Aluminum, Lead, Copper, Cadmium, and Zinc.

OCEAN ROBOTS: WHAT? HOW? WHY? * Lesson Plan PPT to use with students *

Iron : Chemistry, sources and sinks..  Iron is the limiting factor in the surface water of S.O.  HNLC conditions « Iron hypothesis » (Martin et al.

Δ 56 Fe – Motivation GA10 Samples & Planned Work We have deep water profiles from the trace metal casts For JC068 we have stations 8, 11, 12, 13, 16, 18.

Physical and Chemical characterization of the aerosol during the cruise Guieu/Losno/Bonnet/Blain/Gaudichet 1) Scientific objectives:  Determine the particles.

Marine aerosol properties in the Mediterranean: a mesocosm study

Ocean Biological Modeling and Assimilation of Ocean Color Data Watson Gregg NASA/GSFC/Global Modeling and Assimilation Office Assimilation Objectives:

Coupling a Bio-Geo-Chemistry module to HYCOM within the NASA-GISS climate model Anastasia Romanou, Columbia U. and NASA-GISS Rainer Bleck, NASA-GISS Watson.

Aug/Sept 2006 Equator Date Line Iron, Aluminum and Manganese in the Equatorial Pacific James W. Murray Lia Slemons Joe Resing (NOAA/PMEL) Barbara Paul.

Biogenic opal diagenesis in sediments. Biogenic opal What is it? Amorphous silica: (~ 10% water)

Biogenic Silica in Marine Sediments Inputs and Outputs Distribution Burial Efficiency Mechanisms of dissolution & preservation.

Proposed German RV Meteor cruise to the Central Atlantic Ocean Barbados – Las Palmas currently scheduled for April 9 – May 9, 2009.

Food web and microbial loop Eutrophic vs. Oligotrophic food webs

Food web and microbial loop Eutrophic vs. Oligotrophic food webs

Theme 1: Biological uptake and trace element bioavailability

Figure 4: Zonal distribution of Iron and Nitrate in EUC

Class #19 More Ocean Chemistry... NUTRIENT ELEMENTS ORGANIC SUBSTANCES

Iron from melting glaciers fuels the phytoplankton blooms in Amundsen Sea (Southern Ocean): Iron biogeochemistry Lose J.A. Gerringa et al

Ocean Circulation 16.1.

Fall 2007 – Mak Saito Chief Scientist

Stable Isotope Analyses of Bioactive Trace Metals

Iron and Biogeochemical Cycles

Nutrients that limit growth in the ocean

Ocean Currents Chapter 16.1

Ocean Perturbation Experiment (OPEREX)

Programme INTERREG III A : STARDUST

Pick one idea out of all this?

Ocean Perturbation Experiment (OPEREX)

Iron as a limiting nutrient in HNLC regions

Presentation transcript:

Dissolved iron distributions and Fe-limitation C. Guieu & S. Bonnet Laboratoire d’océanographie de Villefranche S. Blain Laboratoire d’océanographie et de biogéochimie (Marseille)

Gyre pacific Nord no data in the BIOSOPE area. - To gather the first Fe data set in the South Pacific gyre including deep waters. EqPac 140°W 12°S. (< 0.05 nM 0-200m) 0.6 nM?? Objective 1 :

- Does natural Fe enrichment of surface waters exist in the wake of Marquesas islands? Does it explain chlorophyll plume? Objective 2 :

(Lacan & jeandel 2001) Profile 0-400m : with special attention paid to the sharing area between SEEC and SEC. What ’s about water circulation around Marquesas islands? Importance of the location of the stations

- To investigate role of iron on biological activity in the oligotrophic area. First priority : In situ observations : To compare the depth of the Fecline and the depths of other nutriclines, max of chloro… Objective 3 : Second priority : Incubation experiments (long station gyre 2) : ?? - Effect of dust addition on biological activity - Others???

Material and methods Ultra-clean sampling technique: -goflo + kevlar line: 0-400m (nutrient analysis required to validate sampling) -or clean pump (10-50m) -or zodiac for surface waters (0-10 m) -rosette for deep profiles (0-4000m) (?) -Clean container. On the deck!!! -On board measurement of Fe by chemiluminescence for different fractions: - ‘dissolvable’ unfiltered and acidified - dissolved - <0.2 µm - soluble (dissolved – colloidal) < 0.02 µm -other analysis - Fe-ligand type porhyrine (analysis at LOB) Concentrations of dissolved iron

- Only possible at long stations (priority gyre 2) To be decided soon because it requires a specific logistic. Incubators, incubation and sub sampling bottles... Material and methods Incubation experiments ?? - But clean seawater can be provided at short stations if requested for specific experiments.