The data is provided as a layer of points representing submersible dives in the French Mediterranean.

The consolidated database shows the spatial distribution of sampling effort by French and Monaco oceanographic campaigns. The measures are divided between the mouth of the Rhone, the Gulf of Lions, and Ligurian and Provence seas. The database contains 55 campaigns or time series, over 5 decades from 1962 to 2010. 28 are oceanographic campaigns of spatial strategy (some were revisited), 14 of temporal strategy, 2 of spatio-temporal strategy, and 1 one-time campaign. In total, it has 24,886 entries including: 19,027 nitrate data - 13,826 nitrite data - 11,452 ammonium data – 20,936 phosphates data – 14,605 silicates data. The majority (92%) of associated temperature and salinity data is available.

The distribution of hydrological landscapes is determined by a method of comparing multi-tables, to identify groups of individuals with similar variability of hydrological conditions during the year. The data used provides monthly tables showing the selected parameters, calculated over the entire geographic area with a resolution of 0.1 °. The variable chlorophyll-a is extra: it does not contribute to the discrimination of groups. This method identifies 10 hydrological landscapes with a similar annual variability of hydrological conditions.

Map of average monthly non-algal suspended matter carried out in the period 2003-2010. TSS are estimated from the water reflectance using a specific algorithm developed at Ifremer.

Photographies aériennes de Meuvaines réalisées le 30 août 2011 dans le cadre du projet OGIVE (Outils d’aide à la Gestion Intégrée et à la Valorisation des Ecosystèmes conchylicoles, 2005-2013). Les photographies ont été prises pendant les grandes marées de la fin de l’été en parallèle de l’échantillonnage de terrain (Coefficient de marée 111)

The distribution of hydrological landscapes is determined by a method of comparing multi-tables, to identify groups of individuals with similar variability of hydrological conditions during the year. The data used provides monthly tables showing the five selected physical parameters (SS, Phi, SST, MES et CHLA), calculated over the entire geographical area, a common resolution of 0.05°. This method identifies 10 hydrological landscapes showing a similar annual variability of hydrological conditions.

Distribution of spawning herring in the North Atlantic (Clupea harengus) in the Eastern Channel (Downs herring) between November and January. Eggs are laid on the gravel bottom between 20 and 40 m deep.

Layer of Polygons representing the distribution of organisms described in the bibliography and obtained by sampling in the canyons of the French Mediterranean.

Spatial distribution of all oxygen data in degrees integrated vertically and horizontally for all sub-regions of the English Channel, the North Sea, the Celtic Seas and the Bay of Biscay.

3D seasonal temperature range (in ° C) obtained by objective analysis (interpolation) of the raw data in situ, near the seafloor. Within the Bay of Biscay Challenge and the programme of the Operational Coastal Oceanographic Centre Prévimer, the services of SISMER DYNECO-PHYSED of IFREMER have built a joint hydrological database of the Bay of Biscay, from CTD measurements, Bouteilles, XBT / MBT and Profileurs from multiple global data centres to achieve a climatological atlas of the region for temperature and salinity.