La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Climate Impacts on Northern Canada: Regional Background
Auteurs :	Terry D. Prowse, Auteur ; Chris Furgal, Auteur ; Barrie R. Bonsal, Auteur ; Daniel L. Peters, Auteur
Type de document :	Article
Dans :	AMBIO (38(5) JUL 2009)
Article en page(s) :	248-256
Langues:	Anglais
Résumé :	Understanding the implications of climate change on northern Canada requires a background about the size and diversity of its human and biogeophysical systems. Occupying an area of almost 40% of Canada, with one-third of this contained in Arctic islands, Canada's northern territories consist of a diversity of physical environments unrivaled around the circumpolar north. Major ecozones composed of a range of landforms, climate, vegetation, and wildlife include: Arctic, boreal and taiga cordillera; boreal and taiga plains; taiga shield; and northern and southern Arctic. Although generally characterized by a cold climate, there is an enormous range in air temperature with mean annual values being as high as -5 degrees C in the south to as low as -20 degrees C in the high Arctic islands. A similar contrast characterizes precipitation, which can be >700 mm y(-1) in some southern alpine regions to as low as

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