
In
Michigan's lower peninsula there are two regions favorable for the prairie
habitat. One of these regions runs from the southwest lower peninsula up to the
west-central lower peninsula. Another region runs from the southeast lower
peninsula into the thumb. Some western Michigan counties that had prairie lands
are: Cass, St. Joseph, Branch, Hillsdale, Kalamazoo, Allegan and Newaygo
counties. Along with prairies there were even little "deserts" in Michigan that
were in Allegan and Newaygo counties. The Big Prairie Desert in Newaygo county
was once said to be the largest desert east of the Mississippi River. Of course,
because a desert is an area receiving less than 10 inches of rainfall per year
and this region of Michigan has an average yearly precipitation of 30-36 inches,
there could not be a desert there.
In truth this "desert" was once a
tallgrass prairie called the Big Prairie and was a unique feature of the state
of Michigan. It extended across the top of a glacially deposited, sandy outwash
plain. On its eastern end is an ancient lake bed that had probably been the deep
end of a shallow glacial lake that covered the whole prairie area. After years
of natural succession the shallow lake would begin to dry up and become replaced
by grasses that preferred the sandy soil. By the middle of the 19th century,
when the first settlers arrived, the large shallow lake had become a pond in an
open grassy plain surrounded by old growth oak and pine trees.
Read more
on Big Paririe Desert.