Prairies Ecozone

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Prairies
Prairie near Brooks.JPG
Mixed Grassland ecoregion of the Prairies
Ecology
Borders
Geography
Area465,094 km2 (179,574 sq mi)
Country Canada
Provinces
Climate type Cold semi-arid and humid continental

The Prairies Ecozone is a Canadian terrestrial ecozone which spans the southern areas of the Prairie provinces of Alberta, Saskatchewan, and Manitoba. It is a productive agricultural area, and is commonly referred to as "Canada's breadbasket". [1] Farmland covers about 94% of the land, and is the dominant domestic economic activity of the zone, as well as an important factor in Canadian foreign trade. [1] Natural gas and oil are abundant in the area. The corresponding Level II ecoregion of the US Environmental Protection Agency is the Great Plains Ecoregion.

Contents

Geography

Following Alberta's border with British Columbia, this ecozone is adjacent to the Montane Cordillera on the west. The two zones are bifurcated by the Boreal Plains about 70 kilometres southwest of Calgary, which also wraps around the remaining extent of the zone north of the United States border toward the Red River Valley. It is part of the Interior Plains, the Canadian extension of the Great Plains, and covers approximately 520,000 square kilometres of land and water. [1]

Establishment of the agricultural industry has had a significant effect on the land, which now retains "little of the natural vegetation" [1] it had before the area was settled. Fewer than half of the original wetlands in the region remain, though during years of high precipitation, numerous ephemeral wetlands may form, typically for very short periods of time. [2] Characterised by vast tracts of flat and rolling plains, it nonetheless exhibits a variety of relief, including hummocky lands and deep river valleys.

The ecozone transformed into a relatively treeless grassland following the last glacial retreat from 11,000 to 8,000 years ago. [3] The strata of sedimentary rock are from the Cretaceous and Tertiary periods, and contain "isolated pockets and cracks [with] rich reservoirs of oil and gas". [3]

Ecoprovinces

This ecozone can be further subdivided into three ecoprovinces: [4]

Climate

Because of its location east of the Rocky Mountains, the Prairies ecozone can be semi-arid in some areas, annual precipitation generally increases farther east in the ecozone from 250 millimetres (9.8 in) in southern Alberta and Saskatchewan to 700 millimetres (28 in) in parts of Manitoba, as well humidity increases eastward through this zone. [5] Winters are cold, due to the lack of a major body of water, and summers are warm, means can very and tend to be colder eastward due to the lack of a major body of water, and warmer in summer. Winters averages around −10 °C (14 °F), and summers around 15 °C (59 °F). [5]

Demographics

A grain elevator, for storing farmed grains typical on the Prairie Warner Elevator Row.jpg
A grain elevator, for storing farmed grains typical on the Prairie

Despite the predominance of farming, less than 10% of the population is involved in agriculture. It is a highly urbanized area, with all major population centres of these provinces located in this ecozone. These include Edmonton, Calgary, Regina, Saskatoon and Winnipeg, as well as Brandon, Moose Jaw, Red Deer and Lethbridge. Nearly 80% of the region's four million human inhabitants live in these and other urban areas. [2]

Conservation

A number of protected areas have been established to protect representative and/or significant portions of this ecozone. These include Elk Island National Park, Grasslands National Park, and Turtle Mountain Provincial Park. [6]

See also

Related Research Articles

<span class="mw-page-title-main">Geography of Canada</span>

Canada has a vast geography that occupies much of the continent of North America, sharing a land border with the contiguous United States to the south and the U.S. state of Alaska to the northwest. Canada stretches from the Atlantic Ocean in the east to the Pacific Ocean in the west; to the north lies the Arctic Ocean. Greenland is to the northeast with a shared border on Hans Island. To the southeast Canada shares a maritime boundary with France's overseas collectivity of Saint Pierre and Miquelon, the last vestige of New France. By total area, Canada is the second-largest country in the world, after Russia. By land area alone, however, Canada ranks fourth, the difference being due to it having the world's largest proportion of fresh water lakes. Of Canada's thirteen provinces and territories, only two are landlocked while the other eleven all directly border one of three oceans.

<span class="mw-page-title-main">Geography of Alberta</span>

Alberta is one of the thirteen provinces and territories of Canada. Located in Western Canada, the province has an area of 661,190 km2 (255,290 sq mi) and is bounded to the south by the United States state of Montana along 49° north for 298 km (185 mi); to the east at 110° west by the province of Saskatchewan for 1,223 km (760 mi); and at 60° north the Northwest Territories for 644 km (400 mi). The southern half of the province borders British Columbia along the Continental Divide of the Americas on the peaks of the Rocky Mountains, while the northern half borders British Columbia along the 120th meridian west. Along with Saskatchewan it is one of only two landlocked provinces or territories.

<span class="mw-page-title-main">Canadian Prairies</span> Region of Western Canada

The Canadian Prairies is a region in Western Canada. It includes the Canadian portion of the Great Plains and the Prairie provinces, namely Alberta, Saskatchewan, and Manitoba. These provinces are partially covered by grasslands, plains, and lowlands, mostly in the southern regions. The northernmost reaches of the Canadian Prairies are less dense in population, marked by forests and more variable topography. If the region is defined to include areas only covered by prairie land, the corresponding region is known as the Interior Plains. Physical or ecological aspects of the Canadian Prairies extend to northeastern British Columbia, but that area is not included in political use of the term.

<span class="mw-page-title-main">Aspen parkland</span> Temperate grasslands, savannas, and shrublands ecoregion of Canada and the United States

Aspen parkland refers to a very large area of transitional biome between prairie and boreal forest in two sections, namely the Peace River Country of northwestern Alberta crossing the border into British Columbia, and a much larger area stretching from central Alberta, all across central Saskatchewan to south central Manitoba and continuing into small parts of the US states of Minnesota and North Dakota. Aspen parkland consists of groves of aspen, poplar and spruce, interspersed with areas of prairie grasslands, also intersected by large stream and river valleys lined with aspen-spruce forests and dense shrubbery. This is the largest boreal-grassland transition zone in the world and is a zone of constant competition and tension as prairie and woodlands struggle to overtake each other within the parkland.

<span class="mw-page-title-main">Boreal Shield Ecozone (CEC)</span> Largest ecozone in Canada, stretching from Saskatchewan to Newfoundland

The Boreal Shield Ecozone, as defined by the Commission for Environmental Cooperation (CEC), is the largest ecozone in Canada. Covering 1.8 million square kilometres it covers almost 20% of Canada's landmass, stretching from northern Saskatchewan to Newfoundland.

<span class="mw-page-title-main">Geography of Manitoba</span>

The geography of Manitoba addresses the easternmost of the three prairie Canadian provinces, located in the longitudinal centre of Canada. Manitoba borders on Saskatchewan to the west, Ontario to the east, Nunavut to the north, and the American states of North Dakota and Minnesota to the south. Although the border with Saskatchewan appears straight on large-scale maps, it actually has many right-angle corners that give the appearance of a slanted line. In elevation, Manitoba ranges from sea level on Hudson Bay to 2727 ft (831 m) on top of Baldy Mountain. The northern sixty percent of the province is on the Canadian Shield. The northernmost regions of Manitoba lie permafrost, and a section of tundra bordering Hudson Bay.

<span class="mw-page-title-main">Geography of Saskatchewan</span>

The geography of Saskatchewan is unique among the provinces and territories of Canada in some respects. It is one of only two landlocked regions and it is the only region whose borders are not based on natural features like lakes, rivers, or drainage divides. The borders of Saskatchewan, which make it very nearly a trapezoid, were determined in 1905 when it became a Canadian province. Saskatchewan has a total area of 651,036 square kilometres (251,366 sq mi) of which 591,670 km2 (228,450 sq mi) is land and 59,366 km2 (22,921 sq mi) is water.

<span class="mw-page-title-main">Pembina Escarpment</span>

The Pembina Escarpment is a scarp that runs from South Dakota to Manitoba, and forms the western wall of the Red River Valley. The height of the escarpment above the river valley is 300–400 feet (91–122 m).

<span class="mw-page-title-main">Boreal Plains Ecozone (CEC)</span> An ecozone

The Boreal Plains Ecozone, as defined by the Commission for Environmental Cooperation (CEC), is a terrestrial ecozone in the western Canadian provinces of Manitoba, Saskatchewan and Alberta. It also has minor extensions into northeastern British Columbia and south-central Northwest Territories. The region extends over 779,471 km2, of which 58,981 km2 is conserved.

<span class="mw-page-title-main">Flora of Saskatchewan</span>

The native flora of Saskatchewan includes vascular plants, plus additional species of other plants and plant-like organisms such as algae, lichens and other fungi, and mosses. Non-native species of plants are recorded as established outside of cultivation in Saskatchewan, of these some non-native species remain beneficial for gardening, and agriculture, where others have become invasive, noxious weeds. Saskatchewan is committed to protecting species at risk in Canada. The growing season has been studied and classified into plant hardiness zones depending on length of growing season and climatic conditions. Biogeographic factors have also been divided into vegetative zones, floristic kingdoms, hardiness zones and ecoregions across Saskatchewan, and natural vegetation varies depending on elevation, moisture, soil type landforms, and weather. The study of ethnobotany uncovers the interrelation between humans and plants and the various ways people have used plants for economic reasons, food, medicine and technological developments. The Government of Saskatchewan has declared 3 indigenous plants as provincial symbols.

<span class="mw-page-title-main">Fauna of Saskatchewan</span>

The Fauna of Saskatchewan include several diverse land and aquatic animal species. From the multiplicity of invertebrates and vertebrates, two have been chosen as symbols of Saskatchewan. Cenozoic vertebrate fossils reveal the geological evolution of the interior plains and its prehistoric biogeography. Today, Saskatchewan's ecosystems range from the sub-arctic tundra of the Canadian Shield in north Saskatchewan to aspen parkland, the Mid-Continental Canadian forests in the centre of the province and grassland prairie. Fauna inhabit areas unique to their own specific and varied breeding, foraging and nesting requirements. With a large land and water area, and small population density, the ecoregions of Saskatchewan provide important habitat for many animals, both endangered and not. Naturalists observing wildlife have enumerated shrinking and growing wildlife populations. They advocate programs and methods to preserve or re-introduce endangered species and identify programs of control for outbreaks of wildlife populations. A broad diversity of wildlife habitats are preserved as parks and reserves protecting the feeding and breeding grounds of protected and indigenous fauna of Saskatchewan.

The effects of climate change in Saskatchewan are now being observed in parts of the province. There is evidence of reduction of biomass in Saskatchewan's boreal forests that is linked by researchers to drought-related water stress stemming from global warming, most likely caused by greenhouse gas emissions. While studies, as early as 1988 have shown that climate change will affect agriculture, whether the effects can be mitigated through adaptations of cultivars, or crops, is less clear. Resiliency of ecosystems may decline with large changes in temperature. The provincial government has responded to the threat of climate change by introducing a plan to reduce carbon emissions, "The Saskatchewan Energy and Climate Change Plan", in June 2007.

<span class="mw-page-title-main">Mixedwood Plains Ecozone (Canada)</span>

The Mixedwood Plains Ecozone is the Canadian ecozone with the most southern extent, covering all of southwestern Ontario, and parts of central and northeastern Ontario and southern Quebec along the Saint Lawrence River. It was originally dominated by temperate deciduous forest growing mostly on limestone covered by glacial till. It is the smallest ecozone in Canada, but it includes the country's most productive industrial and commercial region, and is home to nearly half of Canada's population, including its two largest cities, Toronto, Ontario and Montreal, Quebec. Hence, little of the original forest cover remains, making protection of the remaining forests a high conservation priority. This ecozone includes two regions described by J.S. Rowe in his classic Forest Regions of Canada: the entire Deciduous Forest Region, and the southern portions of the Great Lakes-St. Lawrence Forest Region. In the province of Ontario, the Ontario Ministry of Natural Resources maps this area as Site Regions 6E and 7E.

Hubert Lake Wildland Provincial Park is a wildland provincial park in central Alberta, Canada. The park was established on 4 October 2000 and has an area of 9,665.46 hectares. The park is included in the Upper Athabasca Region Land Use Framework.

Armit Meadows Ecological Reserve is an ecological reserve located in Porcupine Provincial Forest, Manitoba, Canada. It was established in 2015 under the Manitoba Ecological Reserves Act. It is 2.63 square kilometres (1.02 sq mi) in size.

La Biche River Wildland Provincial Park is a wildland provincial park in northern Alberta, Canada. The park was established on 6 June 2000 and had an area of 16,843.975 hectares. It was expanded on 8 August 2001 to an area of 17,545.251 hectares. The park is included in the Upper Athabasca Region Land Use Framework.

Lesser Slave Lake Wildland Provincial Park is a wildland provincial park in central Alberta, Canada. The park was established on 7 February 2001 and has an area of 3,581.450 hectares. The park is included in the Upper Athabasca Region Land Use Framework.

Otter-Orloff Lakes Wildland Provincial Park is a wildland provincial park in northern Alberta, Canada. The park was established on 15 December 2000 and has an area of 6,948 hectares. The park is included in the Upper Athabasca Region Land Use Framework. The park surrounds Orloff Lake and Otter Lake is named for the two lakes contained within the park.

Rock Lake–Solomon Creek Wildland Provincial Park is a wildland provincial park in west-central Alberta, Canada. The park was established on 20 December 2000 and has an area of 34,682.9 hectares. The park is included in the Upper Athabasca Region Land Use Framework. The park is named for the local lake and creek within the boundaries of the park.

Winagami Wildland Provincial Park is a wildland provincial park in northern Alberta, Canada. The park was established on 26 August 1998 and has an area of 17,439.886 hectares. The park is included in the Upper Athabasca Region Land Use Framework. The park is named for Winagami Lake which is adjacent to the park.

References

  1. 1 2 3 4 "Great Plains". Prairies Ecozone. Environment Canada . Retrieved 2008-02-04.[ permanent dead link ]
  2. 1 2 Bernhardt, Torsten. "Prairies". Canada's Ecozones, Canadian Biodiversity project. McGill University, Redpath Museum. Retrieved 2008-02-04.
  3. 1 2 "Landforms and Climate of the Prairies Ecozone". Prairies Ecozone. Environment Canada. Retrieved 2008-02-04.[ permanent dead link ]
  4. Secretariat, Treasury Board of Canada. "National Ecological Framework for Canada - Open Government Portal". open.canada.ca. Retrieved 2020-11-07.
  5. 1 2 "Prairies Ecozone". Ecological Framework of Canada. Ecological Framework of Canada. Retrieved 14 May 2016.
  6. "Terrestrial Ecozones of Canada". Teacher Resource Centre. Parks Canada. Archived from the original on 2008-03-09. Retrieved 2008-02-13.