1. European Network of Excellence for Ocean Ecosystems Analysis Data Transformation Project : Biological and biogeochemical responses to ocean acidification Nassim Taalba Laboratoire d'Océanographie de Villefranche, France

2. European Network of Excellence for Ocean Ecosystems Analysis Data Transformation Project : Biological and biogeochemical responses to ocean acidification Gattuso J.P. Laboratoire d'Océanographie de Villefranche. France Bellerby R. University of Bergen. Norway Delille B. Université de Liège. Belgium Geider R. University of Essex. United Kingdom Middelburg J. Netherlands Institute of Ecology. The Netherlands Orr J. Marine Environment Laboratory. Monaco Riebesell U. University of Kiel. Germany Tyrrell T. National Oceanography Center. United Kingdom Wolf-Gladrow D. Alfred Wegener Institute for Polar Research. Germany

3. Context / Motivation  Numerous papers have report on the effects of ocean acidification on marine organisms and communities. However, few papers have offered details concerning carbonate chemistry and other ancillary data. EUROCEANS Data Transformation Project : Biological and biogeochemical responses to ocean acidification pH scales (NBS, total, free or seawater)different sets of equilibrium constants.  When details on carbonate chemistry are given: The carbonate system parameters are often reported on different pH scales (NBS, total, free or seawater) using different sets of equilibrium constants.  Different units + Different sets of constants + Different pH scales Data comparison : difficult !!

4. (1)To gather data on the carbonate chemistry, biogeochemical processes, and other ancillary data that has been already published. EUROCEANS Data Transformation Project : Biological and biogeochemical responses to ocean acidification (2) To analyze and transform the metadata collected. (3) To make them available to the whole community via the EUR-OCEANS network database. 24 K € in Salary Started early January 2008 and run for 7 months duration Objectives

5. Metadata: Methods, Units, Constants, Scales, Time, date, depth, longitude, latitude…etc. This is not an exhaustive list ; it is continuously extended EUROCEANS Data Transformation Project : Biological and biogeochemical responses to ocean acidification Parameters to be Compiled Core Parameters: Parameters of the carbonate chemistry (pH, pCO 2, DIC, and/or TA…etc) and Salinity, temperature. Ancillary Parameters: Photosynthesis, respiration, calcification, growth, abundance, irradiance, nutrients (N, Si, P)…etc

6. EUROCEANS Data Transformation Project : Biological and biogeochemical responses to ocean acidification Exemple of Parameters ParameterUniteExperiment CaCO 3 pmol/cell Batch cultures CaCO3 Rate pmol CaCO3/cell d POC pmol/cell POC pmol POC/cell d CaCO 3 mmol CaCO 3 cm -2 h -1 Lab. Experi. Coral colonies Daily calcification rates mgCaCO 3 g -1 d -1 Daily calcification ratesmgCaCO 3 d -1 Daily growth rate mg d -1 Growth ratemgCaCO 3 cm -2 d -1 Tot. protein per coral nubbinmg Respirationmmol O 2 cm -2 h -1 Fertilized Eggs % Lab. Experi. Sea Urchins Larvae cultures Nb. embryos /Fertilized eggs % Overall Length (OL) µm Postoral arm Length (PL) µm Body Length (BL) µm Mean Shell Length mm Lab. Experi. Mussels growth rate Wet Weight of Soft Body g Dry weight g Intracellular pH Haemolymph of hypercapnic adult mussels pHe pCO 2 mm Hg Ca 2+ mmol l -1 [ HCO 3- ]e mmol l -1

7. EUROCEANS Data Transformation Project : Biological and biogeochemical responses to ocean acidification Data sets sends format

8. EUROCEANS Data Transformation Project : Biological and biogeochemical responses to ocean acidification Data sets compiled format

9. EUROCEANS Data Transformation Project : Biological and biogeochemical responses to ocean acidification Don’t Worry Even if data are treated and transformed to common units The original data are still well identified The final product will be submitted to PANGAEA data base, WDC-MARE