Quizz the ocean seasonsThis quizz is about the concepts covered in the topic : the ocean seasons. Feel free to review this topic if you do not manage to answer ...
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.
Carte bathymétrique de la Mer Méditerranée
Dinoflagellate Ceratium teresgyr (Photo : Sophie Marro)
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.
This video describes how to perform the Ludion experiment and explains the physical processes involved.
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)
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.