Early travelers in the Midwest remarkedĪt the “park-like” character of the vegetation. “oak opening”, which refers to the open-grown characteristic The lower canopy coverage,īetween savanna and prairie, is generally considered to be 10% tree coverage, although these upper and lower limits are only approximate.Īnother term sometimes used as equivalent to oak savanna is
It the canopy has greater than 50% tree canopy coverage, the vegetation is called a woodland or forest. In midsummer, the vegetation is classed as a savanna. Than one-half of the ground area is in the sun at noon Is generally considered to be a tree canopy with 50% coverage. The upper limit between savanna and forest Prairie, which is often called the prairie/forest border.ĭefined in terms of the openness of the tree canopy. Oak savannas in the Midwest are most commonlyįound in a climatic zone intermediate between woodland and This web site deals exclusively with Midwestern oak savannas, of which many restorable sites exist. Three major areas of oak savanna in North America are found: 1) California and Oregon on the west coast 2) Arizona, New Mexico, and Mexico in the southwest and 3) the Midwestern United States. In North America, a major type of savanna has oaks as the principal trees. Savannas are found throughout the world, but the dominant trees differ. Grasses and other herbaceous vegetation to become the actual Generally defined as a plant community where trees are a componentīut where their density is ".so low that it allows Tutorial on Fire Management in Midwest Oak Savannas Power Point of a typical savanna restoration project The Foundation was established by Tom and Kathie Brock of Madison, Wisconsin, who manage Pleasant Valley Conservancy, a Wisconsin State Natural Area, which has extensive restored oak savannas.Īnother web site maintained by the Savanna Oak Foundation is Pleasant Valley Conservancy, which describes in detail the restoration work on oak savannas and other fire-dependent ecosystems being carried out at this outstanding State Natural Area in southern Wisconsin. This web site has been created and is maintained by the Savanna Oak Foundation, Inc., a nonprofit foundation dedicated to the oak savanna community. The detailed information in this web site shows the way. However, many degraded oak savannas still remain and can be restored. Intact oak savannas are now one of the rarest plant communities on earth. The oak savanna was once one of the most common vegetation types in the Midwest but is today highly endangered.
This web site has been created to provide land managers, ecologists, foresters, land owners, and interested laypeople with the tools needed to restore oak savannas in Midwestern North America.
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