As part of a scientific assessment of critical habitat for boreal woodland caribou (Environment Canada 2011, see full reference in accompanying documentation), Environment Canada's Landscape Science and Technology Division was tasked with providing detailed anthropogenic disturbance mapping, across known caribou ranges, as of 2015. This data comprises a 5-year update to the mapping of 2008-2010 disturbances, and allows researchers to better understand the attributes that have a known effect on caribou population persistence. For this 2015 update an additional, separate higher-resolution database was created by repeating the process using 15-metre panchromatic imagery. For the 30-metre database only, the line and poly data were buffered by a 500-metre radius, representing their extended zone of impact upon boreal caribou herds. Additionally, forest fire polygons were merged into the anthropogenic footprint in order to create an overall disturbance footprint. These buffered datasets were used in the calculation of range disturbance levels and for integrated risk assessment analysis. / Dans le cadre d'une évaluation scientifique de l'habitat essentiel du caribou des bois boréal (Environnement Canada, 2011, voir la référence complète dans la documentation compagnement), la division de la science et de la technologie du paysage d'Environnement Canada avait pour tâche de fournir une cartographie détaillée des perturbations anthropiques, à partir de 2015, à travers les aires de répartition connues du caribou. Ces données comprennent une mise à jour quinquennale de la cartographie des perturbations de 2008-2010 et permettent aux chercheurs de mieux comprendre les attributs qui ont un effet connu sur la persistance de la population de caribou. Pour cette mise à jour de 2015, une base de données distincte, à résolution supérieure, a été créée en répétant le processus à l'aide d'images panchromatiques de 15 mètres. Pour la base de données de 30 mètres seulement, les données de ligne et les données poly ont été mises en mémoire tampon dans un rayon de 500 mètres, représentant leur zone d'impact étendue sur les troupeaux de caribou boréal. De plus, les polygones d'incendies de forêt ont été fusionnés dans l'empreinte anthropique afin de créer une empreinte de perturbation globale. Ces jeux de données tamponnés ont été utilisés dans le calcul des niveaux de perturbation des aires et dans l'analyse intégrée d'évaluation des risques.

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Kort tjanstebeskrivning

The 2010 Plant Hardiness Zones of Canada outlines the different zones in Canada where various types of trees, shrubs and flowers will most likely survive. It is based on the average climatic conditions of each area. The first such map for North America, released by the United States Department of Agriculture in 1960, was based only on minimum winter temperatures. In 1967, Agriculture Canada scientists created a plant hardiness map using Canadian plant survival data and a wider range of climatic variables, including minimum winter temperatures, length of the frost-free period, summer rainfall, maximum temperatures, snow cover, January rainfall and maximum wind speed. Natural Resources Canada's Canadian Forest Service scientists have now updated the plant hardiness zones using the same variables and more recent climate data (1961-90). They have used modern climate mapping techniques and incorporated the effect of elevation. The new map indicates that there have been changes in the hardiness zones that are generally consistent with what is known about climate change. These changes are most pronounced in western Canada. The new hardiness map is divided into nine major zones: the harshest is 0 and the mildest is 8. Subzones (e.g., 4a or 4b, 5a or 5b) are also noted in the map legend. These subzones are most familiar to Canadian gardeners. Some significant local factors, such as micro-topography, amount of shelter and subtle local variations in snow cover, are too small to be captured on the map. Year-to-year variations in weather and gardening techniques can also have a significant impact on plant survival in any particular location. For more information see: http://open.canada.ca/data/en/dataset/50f9f293-f288-4de6-98ad-f69cf85d21ea

(CA): Fotos georeferenciades de les Illes Balears de l'any 2001. (ES): Fotos georeferenciadas de las Islas Baleares de 2001.(EN): Georeferenced photos of Balearic islands in 2001.