. Critical trends in Illinois ecosystems. Ecological assessment (Biology); Environmental impact analysis; Nature; Pollution; Conservation of natural resources; Environmental quality. CDEFG. â A Cropland () â B Grassland () D C Urban/built-up () â D Upland forest () n E Bottomland forest () â F Water () â G Non-forested wetlands () Figure 42. Kankakee River valley land cover In general, relative losses of presettlement habitat in the Kankakee exceed statewide averages. And except for forest and savanna, the ecological qualit)' of what does survive is lower in the K
. Critical trends in Illinois ecosystems. Ecological assessment (Biology); Environmental impact analysis; Nature; Pollution; Conservation of natural resources; Environmental quality. CDEFG. â A Cropland () â B Grassland () D C Urban/built-up () â D Upland forest () n E Bottomland forest () â F Water () â G Non-forested wetlands () Figure 42. Kankakee River valley land cover In general, relative losses of presettlement habitat in the Kankakee exceed statewide averages. And except for forest and savanna, the ecological qualit)' of what does survive is lower in the Kankakee valley than in the rest of the state. More than 90% of the valley was prairie (including savannas) when Euro-American travelers first saw it. Today about 56 acres of prairie survive in the region, or of the original. Conservative calculations suggest that the presettlement Kankakee valley included 375,000 acres of wetlands of various types. An estimated 96% of them are gone. Only about 236 acres of the remaining wetlands (not counting forests along streams) persist in their presettlement state, and of these, only six acres remain «'.< not iiuiiulc luitiinil iiiviis or luitiirv presents tbiit niiiy hesttitc ouiietl. The area is home to at least 249 of the estimated 299 bird sjiccies that regularly occur in 1h3 arc know n to breed or used to breed in the area and 19 of these are listed as threatened or endangered in 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. Office of Realty and Environmental Planning; Illinois. Natural History Survey Division; Critical Trends Assessment Program. Springfield, Ill. : Office of Realty and Environmental Planning : Illinois Natural History Survey
Size: 1581px × 1581px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorillinoisnaturalhistorysurveydivisi, booksubjectnature
