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Twenty-year changes in burned and unburned sand prairie remnants in northwestern Illinois and implications for management
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The American Midland Naturalist
- Article date:
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January 1, 2003
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Copyright informationCopyright American Midland Naturalist Jan 2003. Provided by ProQuest LLC. (Hide copyright information)
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ABSTRACT-Few data are available that compare long-term changes in burned and unburned prairie remnants in the eastern part of the tallgrass prairie region. To assess effects on species richness and composition, in 1996 we resampled three dry and four dry-- mesic sand prairie remnants that were originally sampled in 1976. Three of these sites were managed with burning over the 20 y period and four were not, allowing a comparison of temporal change among burned and unburned sites. Mean richness of native species per plot increased only in burned sites and declined only in unburned sites. In contrast, richness of alien species increased only in unburned sites and declined only in burned sites. ...
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