This video describes how to perform the Ludion experiment and explains the physical processes involved.
Dinoflagellate Ceratium azoricum (Photo : Sophie Marro)
Underwater glider (Photo : David Luquet)
Profiling float (Photo : David Luquet)
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)
Deployment of a profiling float (Photo : Jean-JacquesPangrazi)
Deployment of a profiling float (Photo : Jean-JacquesPangrazi)
Diatom genus Cylindrotheca(Photo : Sophie Marro)
Deployment of a profiling float (Photo : Jean-JacquesPangrazi)
Diatom genus Coscinodiscus(Photo : Sophie Marro)
Phytoplankton bloom observed by the ocean color sensor MODIS onboard NASA satellite Terra in May 2010. The bloom spreads broadly in the North Atlantic from Iceland to the Bay of Biscay - Source : NASA's Earth Observatory (http:/earthobservatory.nasa.gov)
Salpes - La vie enchaînée Bien que d’apparence primitive, les salpes sont de proches ancêtres des poissons. Lorsque les algues abondent, les salpes prolifèrent en de longues chaînes d’individus clonés.
Diatoms - Life in glass houses Champions of photosynthesis, these unicellular organisms appeared at the time of dinosaurs.They produce a quarter of the oxygen we breathe.