ECOSCOPA network : high frequency environmental database

Date 2022-02
Author(s) Petton SebastienORCID1, Pouvreau StephaneORCID1, Fleury ElodieORCID1
Contributor(s) Penot Julia, Cheve Julien, Le Gall Patrik, Louis Wilfried, Palvadeau Hubert, Bouget Jean-Francois, Pierre Duplessix Olivier, Deborde JonathanORCID, Gueux Aurore, Rigouin Loic, D'Amico Florence, Messiaen Gregory, Lagarde FranckORCID, Le Gall Erwan, Mortreux Serge, Queau Isabelle, Grizon James, Chabirand Jean-Michel, Seugnet Jean-Luc, Auby IsabelleORCID
Affiliation(s) 1 : Ifremer, Univ Brest, CNRS, IRD, LEMAR, F‐29280, Plouzané, France
DOI 10.17882/86131
Publisher SEANOE
Keyword(s) High frequency, coastal monitoring, sea temperature, practical salinity, fluorescence, turbidity

Based on the consolidation of the Ifremer networks RESCO ( and VELYGER (, the general objective of the ECOSCOPA project is to analyze the causes of spatio-temporal variability of the main life traits (Larval stage - Recruitment - Reproduction - Growth – Survival – Cytogenetic anomalies) of the Pacific oyster in France and follow their evolution over the long term in the context of climate change.

The high frequency environmental data are monitored since 2010 at several stations next to oyster farm areas in eight bays of the French coast (from south to north): Thau Lagoon and bays of Arcachon, Marennes Oléron, Bourgneuf, Vilaine, Brest, Mont Saint-Michel and Veys (see map below). Sea temperature and practical salinity are recorded at 15-mins frequency. For several sites, fluorescence and turbidity data are also available.

Data are acquired with automatic probes directly put in oyster bags or fixed on metallic structure at 50 cm over the sediment bottom, except for Thau Lagoon whose probes are deployed at 2m below sea surface. Since 2010, several types of probes were used: STP2, STPS, SMATCH or WiSens CTD from NKE ( and recently ECO FLNTU ( The probes are regularly qualified by calibrations in the Ifremer coastal laboratories.

Precision estimated of the complete data collection process is: temperature (±0.1°C), salinity (±0.5psu), in vivo fluorescence (±10%), turbidity (±10%). The data are qualified into several levels: 0-No Quality Check performed, 1-Good data, 2-Probably good data, 3-Probably bad data, 4-Bad data, 5-Value changed, 7-Nominal value, 8-Interpolated value, 9-Missing value. 

Licence CC-BY-NC-ND
Sensor metadata


SMATCH with localized chlorination, frequency rotation: 4 months

SP2T / STPS / WiSens CTD with rotation: fortnightly in productive period otherwise monthly.

SeaBird (

WetLab ECO FLNTU : Optical sensors which measure chlorophyll fluorescence at 470 nm and turbidity at 700 nm within the same volume. 5 measures at 1Hz every 15 mins. Fluorescence range 0-50 FFU with 0.01 FFU sensitivity / Turbidity range 0-100 NTU with 0.02 NTU sensitivity. No rotation needed, global maintenance at SeaBird facilites every two years.

File Size Format Processing Access
Daily mean data 727 KB XLS, XLSX Processed data Open access
Baie des Veys - Géfosse - 2010_2021 4 MB NC, NetCDF Processed data Open access
Baie du Mont Saint-Michel - Cancale - 2010_2021 2 MB NC, NetCDF Processed data Open access
Rade de Brest - Pointe du Château - 2010_2021 5 MB NC, NetCDF Processed data Open access
Baie de Vilaine - Pénerf - 2010_2021 3 MB NC, NetCDF Processed data Open access
Baie des Bourgneuf - Coupelasse - 2010_2021 3 MB NC, NetCDF Processed data Open access
Baie de Marennes Oléron - D'Agnas - 2010_2021 2 MB NC, NetCDF Processed data Open access
Bassin d'Arcachon - Le Tès - 2010_2021 3 MB NC, NetCDF Processed data Open access
Etang de Thau - Marseillan Est - 2010_2021 2 MB NC, NetCDF Processed data Open access
R script to read the NetCDF format 1 KB R script Open access
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How to cite 

Petton Sebastien, Pouvreau Stephane, Fleury Elodie (2022). ECOSCOPA network : high frequency environmental database. SEANOE.