Journal
ANNALS OF THE MISSOURI BOTANICAL GARDEN
Volume 87, Issue 2, Pages 286-294Publisher
MISSOURI BOTANICAL GARDEN
DOI: 10.2307/2666165
Keywords
annual Sporobolus species; Midwestern (USA) limestone glades; Ozark glades; Schizachyrium scoparium; woody plant invasion; xeric limestone prairies
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Literature on the vegetation of limestone and dolomite (cedar) glades in the Ozarks of Missouri and Arkansas and in the midwestern United States (Illinois, Indiana, Ohio, Wisconsin) is reviewed. Dominant plants in these glades are C-4 perennial prairie grasses, of which little bluestem (Schizachyrium scoparium (Michx.) Nash) is the most important. Without removal of invading woody plants by fire or other means, succession in these rocky, calcareous openings is to forest. They differ from cedar glades in the southeastern United States, which are dominated by C-4 annual grasses (primarily Sporobolus vaginiflorus (Torr. ex Gray) Wood) and do not require management or natural disturbances to maintain them. We suggest that the anthropogenic, prairie-grass-dominated openings in the Ozarks and Midwest he called xeric limestone (or dolomite) prairies and that the term cedar glades be used for atl edaphic climax dominated by C-4 summer annual grasses in natural openings on limestone or dolomite bedrock.
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