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Parks and Open Space

Prairie Habitat

Native prairie is dominated by a mixture of native perennial grasses and wildflowers with some low growing shrubs. Prairie grasslands are some of the richest plant communities in Manitoba. From early spring when the first crocuses emerge to catch the warmth of the sun, to the fall when the prairie grasses wave their golden stalks in the cooling breeze, the prairie is constantly changing. Manitoba has two main types of prairie: tall-grass and mixed-grass prairie. Before the arrival of European settlers, the Red River Valley in south-central Manitoba was a sea of tall-grass prairie, a complex ecosystem with an astonishing variety of grasses, flowers and wildlife. Its name comes from its tall grasses that reached over two metres in height. In this area, the loamy or clay based soils and more than 50 mm (20") of precipitation a year provided the ideal growing conditions for tall-grass prairie. It was the most productive type of prairie in North America. Today tall-grass prairie is one of the most endangered ecosystems in Canada. Less than 1% of Manitoba's tall-grass prairie remains.

blazing star

Mixed-grass prairie lies to the west of the tall-grass prairie, where there is less precipitation (25-30 mm or 10-20" annually) and the soils are sandy or well-drained. The grasses here are mostly knee-high. Mixed-grass prairie extends from the Interlake and southwestern Manitoba across Saskatchewan to Alberta. While there is more mixed-grass prairie left in Manitoba, much of it is being degraded through overgrazing and the introduction of weeds. Weedy plants do not ordinarily occur in undisturbed prairie areas. Only when the prairie sod has been disturbed will weed species become established. The number of kind of weeds will depend on the degree of nature of the disturbance.

Tall and mixed-grass prairie have many plant species in common. In some place, the tall and mixed-grass prairies seem to blend together and it is hard to tell which prairie type dominates. Most of Manitoba's endangered plants and wildlife are found in native prairie habitats.

Savannah Sparrow

Prairie plants have special adaptations to overcome extremes in temperature and moisture. Hairy or rolled leaves reduce moisture loss; deep spreading root systems take advantage of available moisture and can store great quantities of food. These types of adaptations are especially important in surviving the periods of drought that are characteristic of the prairies. Prairie animals are also specially suited for a grassland environment. The short-eared owl, meadowlark, and savannah sparrow are examples of prairie birds that nest right in the grass. Others, like the goldfinch and clay-coloured sparrow, are more at home in small shrubs. Prairie birds tend to sing their loud, clear songs from the air, rather than from perches, as forest birds do.

Because there are few trees, some prairie creatures make their homes in dens or underground burrows. Bumble bees, foxes, badgers, burrowing owls and some reptiles and amphibians spend part of their time underneath the prairie. Voles, mice and shrews make grass nests in the ground. Tawny colouration, plant-eating and burrowing habits, and an ability to survive drought are characteristics which help prairie animals to thrive in a flat, treeless environment.

Last update: March 5, 2020
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