CAREMaërl: Ground-truth locations – "Calanques National Park" sectorCAREMaërl: Location of the truths on the ground - Sector "National Park of Calanques"
CAREMaërl: Location of the truths on the ground - Sector "National Park of Calanques"CAREMaërl: Ground-truth locations – "Calanques National Park" sector
This API provides geolocated ground-truth points recorded in November 2024 and March 2025 along video transects surveyed by towed sampling sled during the CAREMaërl marine campaign in the Calanques National Park sector, France. Conducted under Action D1 of the Life Marha project, the survey maps maërl and rhodolith habitats along the Mediterranean coast down to the 60-metre isobath and assesses their health status via hyperbaric diving, photo identification, and species determination. A five-camera towed video system enabled live annotation aboard the research vessel between roughly -25 m and -60 m. Habitats are classified using the National Typology of Mediterranean Benthic Biocenosis (NatHab-Med). Published via Etalab.Location of field truths carried out in November 2024 and March 2025 along the video transects by sampling sled during the CAREMaërl sea campaign in the Calanques National Park sector. This project took place within the framework of Action D1 of the Life Marha project. The objective of this project is twofold: - Mapping the habitats at maërl and rhodoliths on the Mediterranean coast to the isobath 60 metres deep, in order to make it possible to establish an inventory of the distribution of these habitats; - Evaluate the health status of these habitats on sectors in the Mediterranean through a protocol carried out in hyperbaric diving, by photo identification and determination of the species associated with the different study sectors. The towed video system (5 cameras) allowed the live viewing and annotation in the cabin of an oceanographic vessel and a geolocated recording of all observations made during the campaign on transects regularly spaced between the lower limit of the posidonia herbarium (around -25 m in the southern region) and the isobath of -60 meters. The typology used for this project is the "National Typology of Mediterranean Benthic Biocenosis (NatHab-Med)". Layer name: biomedplongeespncalacaremaerlofbpt_2154.
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