In the Indian Ocean as in the other seas of the world, a logic of territorialization of the seabed is at work. Almost all of the riparian States have requested the extension of the continental shelf. Five of them have already notified final limits beyond the 200 nautical miles of the state’s coasts. Other applications are on hold before the Commission of the Limits of the Continental Shelf (CLCS). The mandate of the CLCS may...

Diatoms of the Arctic Ocean annually experience extreme changes of light environment linked to photoperiodic cycles and seasonal variations of the snow and sea-ice cover extent and thickness which attenuate light penetration in the water column. Arctic diatom communities exploit this complex seasonal dynamic through a well-documented species succession during spring, beginning in sea-ice and culminating in massive phytoplankton blooms underneath sea-ice and in the marginal ice zone. The pattern of diatom taxa sequentially dominating...

Dix ans après la départementalisation de Mayotte, le cadre juridique du financement de la collectivité n’est toujours pas stabilisé. La persistance de régimes transitoires et dérogatoires, avec, notamment, le maintien des impositions locales, s’ajoute aux difficultés d’application de la fiscalité directe locale de droit commun, en vigueur depuis le 1er janvier 2014. Or l’accession de Mayotte au statut de région ultrapériphérique de l’Union européenne se conjugue mal avec le maintien de ces impositions dérogatoires, comme...