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Long-Term Changes in Chicago Region Prairie Vegetation in Relation to Fire Management
3.55248
Born digital
(Item)
Article
2004
To understand long-term change in Chicago region prairies, in 2001 we re-investigated 62 prairie stands that were originally sampled in 1976 by the Illinois Natural Areas Inventory. For those sites with fire-management records, we correlated changes in species richness, composition and structure with the frequency at which the sites were burned over time. About 77% of all prairies remained intact, and, with the exception of many railroad prairies, most of the surviving sites are now protected. The majority of stands with fire records had been burned less than 40% of the time. With respect to change in species richness, higher quality prairies tended to be stable, while lower quality prairies increased in richness, presumably in response to fire management. We also found that alien species and woody vegetation increased across all sites, and that native species richness tended to decline as woody vegetation increased. Fire frequencies of about 50 %, i.e. biennial burning, appear necessary to maintain composition and structure of mesic and wet-mesic prairies, and few sites were burned at this rate. This appears to be causing long-term deterioration of many sites, and we propose that increased fire management will be needed to maintain these important natural areas.
1097-8917
2, 2, 7-16
Chicago Wilderness Journal (published by)
Natural Community Profile: Dry-Mesic Prairies
Natural Community Profile: Lake Shore Dune
Natural Community Profile: Mesic Gravel Prairies
Natural Community Profile: Wet-Mesic Prairies
Natural Community Profile: Wet Prairies
Natural Community Profile: Dry Sand Prairie
Natural Community Profile: Dry-Mesic Sand Prairie
Natural Community Profile: Mesic Sand Prairie
Natural Community Profile: Wet-Mesic Sand Prairie
Natural Community Profile: Gravel Dry Prairie
Natural Community Profile: Dry-Mesic Gravel Prairies
Natural Community Profile: Mesic Gravel Prairies
Natural Community Profile: Dolomite Dry-Mesic Prairie
Natural Community Profile: Wet-Mesic Dolomite Prairies
Natural Community Profile: Sand Shrub Prairie
Natural Community Profile: Dry Sand Savanna
Natural Community Profile: Dry-Mesic Savanna
Natural Community Profile: Marsh
Natural Community Profile: Graminoid Bog
Natural Community Profile: Graminoid Fen
Natural Community Profile: Calcareous Floating Mat
Natural Community Profile: Calcareous Seep
Natural Community Profile: Sedge Meadow
Natural Community Profile: Lake Shore Dune
Natural Community Profile: Mesic Gravel Prairies
Natural Community Profile: Wet-Mesic Prairies
Natural Community Profile: Wet Prairies
Natural Community Profile: Dry Sand Prairie
Natural Community Profile: Dry-Mesic Sand Prairie
Natural Community Profile: Mesic Sand Prairie
Natural Community Profile: Wet-Mesic Sand Prairie
Natural Community Profile: Gravel Dry Prairie
Natural Community Profile: Dry-Mesic Gravel Prairies
Natural Community Profile: Mesic Gravel Prairies
Natural Community Profile: Dolomite Dry-Mesic Prairie
Natural Community Profile: Wet-Mesic Dolomite Prairies
Natural Community Profile: Sand Shrub Prairie
Natural Community Profile: Dry Sand Savanna
Natural Community Profile: Dry-Mesic Savanna
Natural Community Profile: Marsh
Natural Community Profile: Graminoid Bog
Natural Community Profile: Graminoid Fen
Natural Community Profile: Calcareous Floating Mat
Natural Community Profile: Calcareous Seep
Natural Community Profile: Sedge Meadow
Calendar Year 2004 Staff Publications
The Morton Arboretum Staff Publications and Dataset Collection
Publications
Modern Vegetation
Fire Ecology
Prairie and Wetland Plant Community Research Articles
Plant Conservation at The Morton Arboretum
Technical Journals
Assorted Publications (folder 6)
The Morton Arboretum Staff Publications and Dataset Collection
Publications
Modern Vegetation
Fire Ecology
Prairie and Wetland Plant Community Research Articles
Plant Conservation at The Morton Arboretum
Technical Journals
Assorted Publications (folder 6)
English
Copyright statement:
This image may be protected by copyright law. Please contact the Sterling Morton Library ABOUT section for additional information.