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Ecoregions
Boreal Forest Ecoregion

Few humans inhabit the immense woods of the Far North, an unbroken green wreath extending from Alaska to Newfoundland.

Miles Canyon, near Whitehorse, Yukon Territory, Canada

The Woods at the End of the World

The northern boreal ecoregion accounts for about one third of this planet's total forest area. It is comprised of a broad circumpolar band which runs through most of Canada, Russia, Scandinavia and parts of Northern Scotland. Compared to much of the world, this ecoregion enjoys a sparse population and thus one would think, few threats to its immense and majestic beauty. However the reality is quite different.

Although, the boreal forest conjures up images of vast pristine wilderness, an unending expanse of conifers in an area that has been left untouched by human interference and industrial development, it is increasingly threatened by a range of resource extraction and other activities.

The Largest Natural Ecosystem on Earth

In North America, the boreal ecoregion extends from Alaska to Newfoundland, bordering the tundra to the north and touching the Great Lakes to the south.

By far the most dominant tree species are conifers which are well-adapted to the harsh climate, and thin, acidic soils. Black and white spruce are characteristic species of this region along with Tamarack, Jack Pine and Balsam Fir. There are also deciduous trees which are at times mixed in among the conifers, especially in more southern areas - they may include White Birch and Poplars. Over 200 bird species breed here, as well as being home to species such as Caribou, Lynx, Black Bear, Moose, Coyote, Timber Wolf and recovering populations of Wood Bison.

Also characteristic of the boreal are innumerable water bodies: bogs, fens, marshes, shallow lakes, rivers and wetlands, mixed in among the forest and holding a vast amount of water. The winters are long and severe while summers are short though often warm.

Fire is a crucial disturbance factor in the boreal ecoregion. It facilitates the destruction of old, diseased trees along with the pests that are associated with those trees. Many animals are able to escape natural fires and some trees such as aspen and jackpine actually require fires to stimulate their reproductive cycles. Furthermore, the nutrient-rich ash left behind helps fuel plant growth. A patchy mosaic of plant communities left in the wake of fire action provides the variety required to sustain different species of wildlife.

Human Activity

Although the population in this ecozone is relatively sparse, there are many small communities which rely on various resource extraction industries such as forestry and mining. Unless they diversify, their existence is extremely tenuous, often relying on one mill or mine as their economic mainstay. For generations, the boreal forest has also been home to First Nations people including the Cree, Innu, Métis, Dene, Gwich'in and Athabascan. Traditional Aboriginal lifestyles are also deeply tied to the continued existence of wildlife.

Major industrial developments in the boreal ecoregion include logging, mining, and hydroelectric development. These activities have had severe impacts on many areas and these will face increasing pressure for resource exploitation in the coming years. Approximately 90% of all logging that occurs in this region is by clearcutting, using heavy, capital-intensive machinery. As wood shortages become more and more prevalent in the southern regions of Canada, timber that was once considered unprofitable to log in the north, is now being threatened to sustain "fibre supply". Vast regions of Canada's boreal forests are under leases to forestry companies, mostly for the production of pulp and paper.

The "high mineral potential" in this region is also very problematic. Specific concerns include the disposal of acidic effluent from tailings, containment of radioactivity and the effects of emissions from processing plants.

The construction of most hydroelectric facilities (dams) in Canada have taken place in the boreal ecoregion. Massive hydroelectric development has produced changes in streamflow patterns, flooded large areas to result in a dramatically altered landscape and cause the production of methylmercury. Acid rain also continues to be a serious problem for the lakes and shallow soils of the boreal region despite legislation curbing acid precipitation-producing emissions in both the US and Canada. Furthermore, organochlorine and heavy metal contamination especially mercury and cadmium continue to be a source of concern.

Protecting the Boreal Forest

The Sierra Club believes that to protect this ecosystem, anthropogenic industrial activity both inside and outside the boreal forest must be carefully regulated. Large reserves able to maintain their ecological integrity must be adequately set aside and thorough environmental assessments must be carried out before governments decide to allow any sort of large-scale industrial activity.

Forestry in Canada is under provincial jurisdiction, and so regulation varies from province to province. The Sierra Club of Canada has just completed a thorough research project on Canada's forests. The compilation of this research has been published in "At the Cutting Edge: The Crisis in Canada's Forests", published by Key Porter Books, Toronto, 1998 [ISBN #1-55013-832-4]. Written by Elizabeth May, the Executive Director of the Sierra Club of Canada, the research for this publication was conducted by prominent forest activists across Canada. This thorough analysis uses government and industry's own sources and numbers to show that forestry in Canada including its Boreal ecoregion is currently unsustainable. The goal of this book is to foster a dialogue about the use and abuse of Canada's forests.

Contact:
Sierra Club of Canada sierra.club.canada@sierraclub.org

Photo courtesy Philip Greenspun.


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