Sentences with phrase «tundra areas»
Tundra areas are cold regions near the Earth's poles where the ground is permanently frozen. They have very little vegetation and are home to animals like polar bears and Arctic foxes. Full definition
The most extensive forest - tundra areas in North America are located on the Canadian Precambrian Shelf from the Northwest Territories to the Labrador coast.
rstb.royalsocietypublishing.org
The Finnish Meteorological Institute has participated in a study in which similar tundra areas were divided into three different types of tundra on the basis of climate and vegetation.
In North America these coupled interactions set the stage for changes in ecological processes, already documented, consistent with a biome shift characterized by increased deciduous composition in the interior boreal forest and evergreen conifer migration into tundra areas that are, at the same time, experiencing increased shrub densification.
To realize such a detailed account of the long - term behaviour of the northernmost boreal forest, we documented and analysed the fire record of a northern boreal forest - tundra area of 40 km2 within the Rivière Boniface watershed in northeastern Canada (57 ° 45 ′ N, 76 ° W; figure 1).
Some are predictable, such as a widespread growth of shrubs across vast former tundra areas shedding their leaves to be windblown into the increasingly prevalent themokarst melt pools and land - slip dam lakes, where they'll rot anaerobically to release additional methane.
Owing to the dual and contrasted occupation of tundra and forest communities in the same forest - tundra area and in the same topographic and edaphic setting, we were also interested (i) to evaluate the climatic impact of fire in time and space on the regeneration of the boreal forest at its northernmost limit and (ii) to determine the inception and expansion of tundra communities in a typical North American forest - tundra landscape.