Les Diatomées - Bacillaria - mon océan et moi

he seasonal evolution of the chlorophyll a concentration as seen by a « water color » satellite (SeaWifs) in the Atlantic Ocean

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Seasonal evolution of the chlorophyll a concentration as obtained by the ocean color sensor SeaWiFS in the Atlantic Ocean.

Les mésocosmes attirent les poissons ! (© Stareso)

Dinoflagellés Ceratium massiliense var protuberans (Photo : Sophie Marro)

Siphonophores (Photo : Fabien Lombard)

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Dinoflagellate Ceratium gravidum. In the video one can observe the movement of one of the two flagella. (Video : Sophie Marro)

Elephant seal equipped with a sensor

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)

Instrumented buoy (Photo : David Luquet)

Dinoflagellate Ceratium arietinum var arietinum (Photo : Sophie Marro)

Les mésocosmes déployés dans la rade de Villefranche (© L. Maugendre, LOV)

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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.

Scientists collecting seawater samples from the rosette (Photo : Stacy Knapp, Woods Hole Oceanographic Institution)

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

Carte bathymétrique mondiale

Surface chlorophyll a concentration in the Mediterranean Sea.

Diatom genus Cylindrotheca (Photo : Sophie Marro)

Dinoflagellate Ceratium teresgyr (Photo : Sophie Marro)

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Embryos and larvae
Drifting in the currents, embryos and larvae perpetuate the species and are food for multitudes.