. The Changing Illinois environment : critical trends : summary report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. Wetlands ⢠47 Figure 7-1 Presettlement Wetlands. Northeast Glacial Lakes â â Muck Riverine & Upland Marshes East-Central Prairie Floodplain Forest Id Southern Bottomland Forest (Cypress. Tupelo) Appniximatton af the types and distribution of presettlement wetlands in Illinois based principally on maps of soil associations with supportire data from maps of drainage and levee districts, maps of for
. The Changing Illinois environment : critical trends : summary report of the Critical Trends Assessment Project. Man; Pollution; Environmental protection; Ecology; Environmental impact analysis. Wetlands ⢠47 Figure 7-1 Presettlement Wetlands. Northeast Glacial Lakes â â Muck Riverine & Upland Marshes East-Central Prairie Floodplain Forest Id Southern Bottomland Forest (Cypress. Tupelo) Appniximatton af the types and distribution of presettlement wetlands in Illinois based principally on maps of soil associations with supportire data from maps of drainage and levee districts, maps of forests, and historical ivetland information. Havera /9S5. Source: EciiliiKicdl Resources, Illinois Natural History Survey, l'*'*4 As wetlands disappear, those that survive are increasingly important as a reservoir of biological diversity. Only 350 undisturbed acres each of bogs and fens are thought to survive in Illinois, but they are home to 34 rare plant species. Page 49 ⢠As of 1993, eight of the ten mammal species considered endangered or threatened in Illinois use wetlands to some extent. Of the 43 bird species then listed, 30 are strongly associated with wet- lands, especially during the breeding season. All three of the amphibians and seven of the nine reptile species (three turtles and four snakes) listed depend on wetlands. Twelve of the 29 fish species listed either occur in wetlands or breed in them. Page 50. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Illinois. Dept. of Energy and Natural Resources; Nature of Illinois Foundation. [Springfield, Ill. ?] : Ill. Dept. of Energy and Natural Resources, the Nature of Ill. Foundation
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