A year from the Arctic

Instrumented buoy (Photo : Emilie Diamond)

Vue sous-marine d'un groupe de mésocosmes montrant la structure de flottaison en surface (© Stareso)

Deployment of a profiling float (Photo : Jean-Jacques Pangrazi)

Siphonophore Forskalia formosa (Photo : Fabien Lombard)

Diatom genus Chaetoceros (Photo : Sophie Marro)

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Les Dinoflagellés - Ceratium hexacanthum
chaîne de Ceratium hexacanthum qui restent les uns à la suites des autres au fur et à mesure des divisions.
Le mouvement des flagelles est bien visible.

Dinoflagellate Ceratium pentagonum var robustum (Photo : Sophie Marro)

Dinoflagellate Ceratium teresgyr (Photo : Sophie Marro)

Foraminifera (Photo : Fabien Lombard)

Instrumented buoy (Photo : David Luquet)

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Sea Urchin - Planktonic Origins
Barely visible to the naked eye, sea urchin larvae grow and transform into bottom-dwelling urchins.

Average chlorophyll concentration in the surface ocean (from mi-September 1997 to August 2007) from the ocean color sensor SeaWiFS (NASA). Subtropical gyres, in the center of the oceanic basins, are characterized by very low concentrations of chlorophyll a (dark blue) - Source : NASA's Earth Observatory (http:/earthobservatory.nasa.gov)

Surface chlorophyll a concentration in the Mediterranean Sea.

Posters

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Illustration in synthesized images of the seasons of the ocean: a year from the Arctic - Animation Clement Fontana

Phytoplankton bloom observed in the Barents Sea (North of Norway) in August 2010 by the ocean color sensor MODIS onboard NASA satellite Aqua. Changes in ocean color result from modifications in the phytoplankton composition and concentration. The green colors are likely associated with the presence of diatoms. The shades of light blue result from the occurrence of coccolithophores, phytoplankton organisms that strongly reflect light due to their chalky shells - Source : NASA's Earth Observatory (http:/earthobservatory.nasa.gov)

Prélèvements d'eau des mésocosmes pour analyses, lors de l'expérience menée en Corse en juin/juillet 2012 (© A. Ree, PML)

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The profiling float