Digital Surface Models (DSMs) of the study area surveyed by drone between June 2024 and March 2025. Each pixel contains the elevation value corresponding to the terrain at the time of the mission. These DSMs were generated from around 1,300 images (depending of the survey) acquired using the DJI Mavic 3E RTK drone, with a resolution of 3.2 cm/pixel. The surveyed area covers around 2.1 km². The campaign was conducted on the highest tides of each month. The drone acquisitions were carried out by Nicolas Lachaussée from the LIENSs UMR Drone Platform. Photogrammetric processing was performed by Natacha Volto (LIENSs) using Agisoft Metashape software. The vertical coordinate system is NGF IGN69. The vertical accuracy (RMSD ~ 3 cm), calculated using around 100 control points, randomly distributed across the study area. It is derived from the vertical difference for each control point between the value measured with the DGPS SP80 and the value extracted from the photogrammetry-generated DSM. These drone surveys were carried out as part of the thesis of Loës Le Goff Le Gourrierec supervised by Xavier Bertin.

The Coastal Zones LC/LU Change (CZC) 2012-2018 is providing the Land Cover / Land Use (LC/ LU) change for areas along the coastline of the EEA38 countries and the United Kingdom, between the reference years 2012 and 2018. The Coastal Zones product monitors landscape dynamics in European coastal territory to an inland depth of 10 km with a total area of approximately 730,000 km², with all the relevant areas (estuaries, coastal lowlands, nature reserves). The production of the coastal zone layers was coordinated by the European Environment Agency (EEA) in the frame of the EU Copernicus programme, as part of the Copernicus Land Monitoring Service (CLMS) Local Component. The Coastal Zones Change product covers a buffer zone of coastline derived from EU-Hydro v1.1. The Land Cover/Land Use (LC/LU) Change layer is extracted from Very High Resolution (VHR) satellite data and other available data. The reference years for the change are 2012 and 2018. The class definitions follow the pre-defined nomenclature on the basis of Mapping and Assessment of Ecosystems and their Services (MAES) typology of ecosystems (Level 1 to Level 4) and CORINE Land Cover adapted to the specific characteristics of coastal zones. The classification provides 71 distinct thematic classes with a Minimum Mapping Unit (MMU) of 0.5 ha and a Minimum Mapping Width (MMW) of 10 m. The status product is available for the 2012 and 2018 reference years. This CZC dataset is distributed in vector format, in a single OGC GeoPackage file covering the area of interest.

The Coastal Zones (CZ) LC/LU product for 2012 is providing a detailed Land Cover / Land Use (LC/ LU) dataset for areas along the coastline of the EEA38 countries and the United Kingdom, with reference year 2012 for the classification. This product monitors landscape dynamics in European coastal territory to an inland depth of 10 km with a total area of approximately 730,000 km², with all the relevant areas (estuaries, coastal lowlands, nature reserves). The production of the coastal zone layers was coordinated by the European Environment Agency (EEA) in the frame of the EU Copernicus programme, as part of the Copernicus Land Monitoring Service (CLMS) Local Component. The Coastal Zones product covers a buffer zone of coastline derived from EU-Hydro v1.1. Land Cover/Land Use (LC/LU) layer is extracted from Very High Resolution (VHR) satellite data and other available data. The class definitions follow the pre-defined nomenclature on the basis of Mapping and Assessment of Ecosystems and their Services (MAES) typology of ecosystems (Level 1 to Level 4) and CORINE Land Cover adapted to the specific characteristics of coastal zones. The classification provides 71 distinct thematic classes with a Minimum Mapping Unit (MMU) of 0.5 ha and a Minimum Mapping Width (MMW) of 10 m. The product is available for the 2012 and 2018 reference year including change mapping. This CZ dataset is distributed in vector format, in a single OGC GeoPackage SQLite file covering the area of interest.

The Coastal Zones (CZ) LC/LU product for 2018 is providing a detailed Land Cover / Land Use (LC/ LU) dataset for areas along the coastline of the EEA38 countries and the United Kingdom, with reference year 2018 for the classification. This product monitors landscape dynamics in European coastal territory to an inland depth of 10 km with a total area of approximately 730,000 km², with all the relevant areas (estuaries, coastal lowlands, nature reserves). The production of the coastal zone layers was coordinated by the European Environment Agency (EEA) in the frame of the EU Copernicus programme, as part of the Copernicus Land Monitoring Service (CLMS) Local Component. The Coastal Zones product covers a buffer zone of coastline derived from EU-Hydro v1.1. Land Cover/Land Use (LC/LU) layer is extracted from Very High Resolution (VHR) satellite data and other available data. The class definitions follow the pre-defined nomenclature on the basis of Mapping and Assessment of Ecosystems and their Services (MAES) typology of ecosystems (Level 1 to Level 4) and CORINE Land Cover adapted to the specific characteristics of coastal zones. The classification provides 71 distinct thematic classes with a Minimum Mapping Unit (MMU) of 0.5 ha and a Minimum Mapping Width (MMW) of 10 m. The product is available for the 2012 and 2018 reference year including change mapping. This CZ dataset is distributed in vector format, in a single OGC GeoPackage SQLite file covering the area of interest.

Ce jeu de données est une orthophotographie par satellite Pléiades Neo d'une résolution de 30cm dans les longueurs d'ondes rouge, vert, bleu, infrarouge, red edge et deep blue.

Réseau routier départemental de la Charente. Il contient les différents tronçons d'axes représentant les routes (donnée linéaire). Un axe est une succession darcs ordonnés par rapport à ladressage linéaire. Cest une route revêtue (pour les réseaux routiers). Pour grand nombre d'entres eux, ils sont issus de la BDTOPO de l'IGN. En revanche ces attributs issus de la BDTOPO et concernant de nouveaux tronçons modifiés ou créés ne sont pas renseignés. Leur dénomination sera "Dx", "x" étant une donnée numérique de 1 à 1000. La voie gauche sera quant à elle nommée post-fixée "_G". ex : "D1_G". Principe de numérotation des bretelles seront dénommées : - D1_BR1_S correspond à la première bretelle sortante de la D1 ; - D1_BR1_E correspond à la première bretelle entrante de la D1 ; - D1_BR1 correspond à une bretelle intégrée dans un giratoire ; - D71_E1, D948_E1 ou D948_E2 correspondent à des nominations de bretelles entrantes ou sortantes antérieurement au SIGR. La numérotation des giratoires sera du type DXXXX_GIR_1 à 99. Les routes gérées par le département limitrophe reprendront la dénomination attribuée par celui-ci avec comme préfixe le numéro le dit département (ex 86DXXXX).

Cartes de végétations du CNES sur le territoire départemental des Pyrénées-Atlantiques datant de 1969, 1970 et 1976

Représentation des points de comptage relatif aux trafics routiers sur les routes départementales de la Charente (16).

Bornage du réseau routier départemental constitué de PR (point routier) présents physiquement sur le terrain (bornes, plaquettes, etc.). Ils sont dénommés PLO (point de localisation) dans le système d'information géographique. Ils permettent de se repérer de manière précise sur le graphe et servent à définir la localisation des informations sur les routes départementales. Trois types de PLO sont définis : D : Point de localisation de début d'axe PR : Point repère ou borne F : Point de localisation de fin d'axe

Les consommateurs primaires de la macrofaune benthique ont été prélevés à trois saisons (avril, septembre 2009 et février 2010) et sur les 31 stations benthiques considérées dans la fiche "Cartographie de la matière organique particulaire benthique dans le Bassin d'Arcachon". Le zooplancton a été prélevé aux mêmes dates sur les 4 stations pélagiques de suivi interne au bassin. Des analyses isotopiques et biochimiques sont réalisées sur ces consommateurs primaires.