Préparation des mésocosmes sur le ponton du laboratoire d'Océanographie de Villefranche lors de l'expérience menée en rade de Villefranche en février 2013 (© L. Maugendre, LOV)
Dinoflagellate Ceratium ranipes grd mains (Photo : Sophie Marro)
Rosette for collecting seawater samples
Instrumented buoy (Photo : David Luquet)
Acantharia (Photo : Fabien Lombard)
Scientists collecting seawater samples from the rosette (Photo : Stacy Knapp, Woods Hole Oceanographic Institution)
Diatom genus Coscinodiscus (Photo : Sophie Marro)
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)
This video describes how to perform the Ludion experiment and explains the physical processes involved.
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.
Instrumented buoy (Photo : David Luquet)
Ocean color satellites travel around the Earth at an altitude of about 700 to 800 km.
Large rosette sampler used in the "World Ocean Circulation Experiment". This rosette has 36 10-liter Niskin bottles, an acoustic pinger (lower left), an "LADCP" current profiler (yellow long tube at the center), a CTD (horizontal instrument at the bottom), and transmissometer (yellow short tube at the center). (Photo : L. Talley)
Siphonophores (Photo : Fabien Lombard)
Jellyfish Rhizostoma pulmo (Photo : Fabien Lombard)
Mollusk (Photo : Fabien Lombard)
