GEOSCAN, résultats de la recherche


TitreRegional-scale mapping of the sediments and biotopes of the Barents Sea through synthesis of existing data
TéléchargerTéléchargement (publication entière)
LicenceVeuillez noter que la Licence du gouvernement ouvert - Canada remplace toutes les licences antérieures.
AuteurDolan, M F J; Lepland, A; Lepland, A; Jørgensen, L; Rybalko, A; Lien, V S; Ljubin, P
SourceProgram and abstracts: 2017 GeoHab Conference, Dartmouth, Nova Scotia, Canada; par Todd, B J; Brown, C J; Lacharité, M; Gazzola, V; McCormack, E; Commission géologique du Canada, Dossier public 8295, 2017 p. 47, (Accès ouvert)
LiensGeoHab 2017
ÉditeurRessources naturelles Canada
Réunion2017 GeoHab: Marine Geological and Biological Habitat Mapping; Dartmouth, NS; CA; mai 1-4, 2017
Documentdossier public
Mediaen ligne; numérique
Référence reliéeCette publication est contenue dans Todd, B J; Brown, C J; Lacharité, M; Gazzola, V; McCormack, E; (2017). Program and abstracts: 2017 GeoHab Conference, Dartmouth, Nova Scotia, Canada, Commission géologique du Canada, Dossier public 8295
Lat/Long OENS 14.0000 68.0000 80.0000 68.0000
Sujetstechniques de cartographie; océanographie; milieux marins; études côtières; conservation; organismes marins; écologie marine; gestion des ressources; sédiments marins; biotopes; peuplements biologiques; benthos; marges continentales; plate-forme continentale; établissement de modèles; bathymétrie; biologie; océan; géologie marine; géologie des dépôts meubles/géomorphologie; géologie de l'environnement
ProgrammeGéoscience en mer, Géoscience de la gestion des océans
Diffusé2017 09 26
Résumé(disponible en anglais seulement)
Knowledge of the distribution of seabed sediments, benthic communities and their associated environment (biotopes) provides important baseline information for sustainable management of the oceans. The Barents Sea comprises a vast area of continental shelf spanning international boundaries, where this type of information is in increasing demand for management related issues in these high-latitude waters. Synthesis of existing data originally obtained for other purposes can provide an important first step in making the required information available, as well as helping to identify areas where further mapping should be prioritised.
We present two related regional-scale maps recently generated for a large part of the Barents Sea continental shelf where varying amounts of existing data were available from Norwegian and Russian institutions: (1) a map showing the distribution of seabed surface sediments (1:3,000,000), and (2) a map showing the predicted distribution of benthic biotopes (4 km raster resolution) based on Random Forest modelling. The biotope map makes use of the sediment map as a key predictor variable, together with bathymetric, oceanographic and other environmental variables. Biotope classes are based on species composition as identified from benthic trawl samples.
Compilation and synthesis of geo-referenced data from various sources can produce valuable results but can also lead to uncertainties in the resultant map products which are important to convey to data users. To support our thematic maps we present a confidence assessment of the foundation datasets contributing to the sediment map. We also discuss further issues related to map confidence and scope for updating the maps as new data become available.