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This comprehensive map of the benthic communities of Les Glénan, is the synthesis of studies introduced by R. Pérez, from ISTPM, in 1980, to localize new fields of algae in front of increasing needs of the industry. It was finalized by P. Arzel, from Ifremer, in March and April 1985. For these studies, different methods were used: underwater diving, tidal zone photographs, field surveys. The aim of this study was to inform the CIAM (Comité Interprofessionnel des Algues Marines = Interprofessional committee of Seaweeds ) of evaluation of the resources and the potentialities of the Glenan. Elements collected in this layer correspond to the state of the knowledge in 1985. This map was digitised in 2006, as part of the REBENT programme, i.e. the surveying network for the benthic fauna and flora. The original legend is transferred to the "LEG_ORIG" attribute data field. The harmonization with the EUNIS typology is in progress, as part of the REBENT and Interreg-MESH programmes. One extra layer must be associated with this set of data: a point data layer on Cystoseira sp. et Halidrys siliquosa.
This map of the coastal marine vegetation, in the Aber Wrac'h and Aber Benoît (North Brittany), is copy out from the "PEPS VEGMA Cartographie de la végétation marine côtière sur le littoral bas-léonard (Finistère Nord)" by J. Y. Piriou from Ifremer, published in 1987. It was realized as part of the "Projet d'Evaluation Préliminaire Spot - VEGétaux MArins". The objective was to define the contribution of the SPOT satellite in the cartography of the phytobenthos in coastal environment (intertidal and subtidal zone) in particular on Fucales and Laminariales. These map was digitized in 2004, as part of the REBENT programme, i.e. the surveying network for the benthic fauna and flora. The original legend is transferred to the "ORIG_HAB" attribute data field. The harmonization with the EUNIS typology is in progress, as part of the REBENT and Interreg-MESH programmes.