Search results
Results From The WOW.Com Content Network
The North America Prairies is a large grassland floristic province within the North American Atlantic Region, a floristic region within the Holarctic Kingdom.It lies between the Appalachian Province and the Rocky Mountains and includes the prairies of the Great Plains.
The Central Great Plains are a prairie ecoregion of the central United States, part of North American Great Plains. The region runs from west-central Texas through west-central Oklahoma, central Kansas, and south-central Nebraska. It is designated as the Central and Southern Mixed Grasslands ecoregion by the World Wide Fund for Nature.
Prairie ecosystems in the United States and Canada are divided into the easternmost tallgrass prairie, the westernmost shortgrass prairie, and the central mixed-grass prairie. Tallgrass prairies receive over 30 inches of rainfall per year, whereas shortgrass prairies are much more arid, receiving only 12 inches or so, and mixed-grass prairies ...
The Texas Blackland Prairies ecoregion covers an area of 50,300 km 2 (19,400 sq mi), consisting of a main belt of 43,000 km 2 (17,000 sq mi) and two islands of tallgrass prairie grasslands southeast of the main Blackland Prairie belt; both the main belt and the islands extend northeast–southwest.
The shrub-steppes of North America occur in the western United States and western Canada, in the rain shadow between the Cascades and Sierra Nevada on the west and the Rocky Mountains on the east. The expanses of grass once sustained migrations of an estimated 30 to 60 million American bison which maintained grazing pressure as a keystone species .
U.S. Census Bureau regions and divisions. Since 1950, the United States Census Bureau defines four statistical regions, with nine divisions. [1] [2] The Census Bureau region definition is "widely used... for data collection and analysis", [3] and is the most commonly used classification system.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
In the western portion of the prairie, the soil is a brown loess loam over calcareous clay. In hilly areas, the clay is covered by red and yellow sand from the Pliocene epoch. [ 4 ] The underlying clay, an identifying component of the Jackson Prairie Belt, shrinks and swells dramatically based on the amount of rainwater.