Découpage administratif des Communautés d'Outre Mer de la France au niveau communal

In May 2018, an unprecedented long and intense seismic-volcanic crisis broke out off the island of Mayotte (Indian Ocean) and was associated with the birth of the Fani Maoré underwater volcano. Since then, an integrated observation network has been created (REVOSIMA), with the given objective of monitoring and better understanding underwater volcanic phenomena. Recently, an unmanned submarine glider (SeaExplorer) has been deployed to supplement the data obtained during oceanographic surveys (MAYOBS) which are carried out on an annual basis. This glider is operated by ALSEAMAR and performed a continuous monitoring of 30 months of the water column with the objective to acquire hydrological properties, water currents and dissolved gas concentrations. This monitoring already showed that it is feasible and valuable to measure autonomously, continuously and at a high spatio-temporal scale, physical (TEMP, SAL, water currents) and biogeochemical parameters (O2, CH4, PCO2, bubbles/droplets, vertical speeds) over several months from a SeaExplorer glider. In particular, innovating sensing capabilities (e.g., MINI-CO2, ADCP) have shown a great potential in the context of the Mayotte seismic volcano crisis, despite technical challenges (complex algorithms, sensor capabilities, etc.). This dataset provides these physical and biogeochemical parameters from September 17, 2021 to April 02, 2024 and the quality flags associated.   

Inventaire des parcs naturels marins ayant le statut d'aires marines protégées (au sens de la loi 2006-436 du 14 avril 2006 relative aux parcs nationaux, aux parcs naturels marins et aux parcs naturels régionaux). source : journal officiel de la République française. (http://www.aires-marines.fr/index.php?option=com_content&task=view&id=17&Itemid=1)

The MFSP repository of the Fisheries Information System corresponds to the combination of Parameters, Supports, Fractions, Methods and Units. It allows variables to be entered, banked and retrieved. It is associated with many other repositories: species, gear, etc.

The repository of location in the Fisheries Information System is divided into 3 categories: places on land, areas at sea and regulatory areas at sea. Each of these is organised hierarchically. There are 93 levels of places in Harmonie: a metadata sheet exists for each of them with, when it exists, a geographical layer.

Avant le 1er janvier 2016, la France comptait 27 régions : - 22 régions en France métropolitaine (en comptant la Corse). - 5 régions d'outre mer : la Guadeloupe, la Martinique, la Guyane, la Réunion et Mayotte (depuis 2011). Bien qu'obsolète, ce référentiel est conservé dans le Système d'Informations Halieutiques pour les données historiques.

The "Sales" data in the declarative flow contain mainly auction sales data and some non-exhaustive data on non-auction sales.

A metier in the Fisheries Information System is a fishing practice defined by a fishing gear and a target species. They are used for statistical purposes to evaluate fishing strategies and efforts.

The gear repository of the Fisheries Information System includes, on the one hand, the FAO fishing gears enriched with national specificities and, on the other hand, the sampling gears used during the fisheries surveys conducted by Ifremer and its partners.

Size-weight relationships are specific to each scientific species and its environment. They allow the size of an individual to be determined from its weight or vice versa. These relationships are established statistically from a sample of individuals representative of the species.