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Tall Grass Prairie

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Derek Field

on 19 April 2010

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Transcript of Tall Grass Prairie

Tall Grass Prairie A perscribed burn at the Arboretum in madison Perscribed burn a the madison Arboretum
Little Bluestem Big Bluestem Coyote American Badger Precipitation:
moist near Mts. and up north
less rain in central areas on North America
12.6 in - 21.7 in (32 cm - 55 cm)
Hot summers and cold winters
Strong winds - summer and winter
Long dry periods during summer
Deer Indian Grass Tallgrass Prairies once covered around 142 million acres in the United States (40%)
About one percent of all tallgrass prairies in the United States remains Tallgrass Prairies formed about 8,000 years ago Plants:
over 100 different species can occur in only 5 acres of prairie
the average height of plants is six to eight feet (1.8m - 2.4m)
the soil is dense with roots and bulbs Animals:
around 60 million bison roamed before European settlers arrived
by 1885 there were less than 600
grazing animals are a play a major role in tallgrass prairies by stimulating the growth of the plants
5 billion prairie dogs once spread across the prairies. Now as they decrease in size, the preditors do the same.
Different Prairie Climates
Tall grass, some water, medium-deep silt, good drainage
Little water, dry shallow soil over sand
Lots of water, deep layer of silt, poor drainage Bison The dead and decaying root make the soil
rich and fertile

The lancape varies a lot in the soil type and depth of the soil.

The main types of the bedrock are limestone and

The main type of soil is the antigo soil. It is so
common in Wisconsin that it is the state soil.

The driftless area is an area that is in Southwest
Wisconsin, Southeast Minesota and also in Illinois,
and in Iowa. This is a where they are trying to bring back
the prairie in a big way. Before colonization and settlement by european settlers, the tallgrass prairie consisted of a vast variety of plants and animals. For an uncertain amount of time, such native organisms have thrived in the prairie ecosystems, but have since suffered from suburban sprawl, cultivation, and the introduction of invasive species of plants and animals. Humans have not had a positive impact on the tallgrass prairie. Today, very little is left, and activist and environmental groups are putting forth efforts to preserve that which has survived. Today, the tallgrass prairie occupies a mere 4% of what it did before settlement, and much of this amount is prairie that has been restored. Of the actual original tallgrass, it is said that there is less than 1% remaining. Reserves:
Barneveld Prairie, WI
Tallgrass Prairie National Preserve, KS
Tallgrass Prairie Preserve, OK
Barneveld Prairie Tallgrass Praire, KS Tallgrass Praire, OK Parks:
Curtis Prairie, WI
Greene Prairie, WI
Marion Dunn Prairie, WI
Sinaiko Overlook Prairie, WI
Chiwaukee Prairie, WI
Chiwaukee Prairie, WI Tallgrass prairie once covered 142 million acres.
Prairies once covered about 40% of the United States.
Prairies are one of the most recently developed ecosystems in North America.
Prairies formed about 8,000 years ago.
About one percent of the North American prairies still exists.
Iowa had the largest percentage of its area covered by tallgrass prairie - 30 million acres.
In Iowa, 99.9 percent of the historic natural landscape is gone.
The End
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