. Critical Trends Assessment Program : 2001 report. Ecosystem management; Environmental monitoring; Natural resources surveys. 120. ndive norvrBtne natMe n>rvrBtii« ndi\« ncn-ndve ndi\e tcn-natM FotBBb GrasBtandB Wbtlands ^' Habitat Type Figure 2. Species richness across all sites and all strata, 1997-2000. (Bar = standard deviation) 1AI - 100 - p ^ E 3 80 - » ^^ c ^ eo- § L ⢠8 -^ ^ ~ , âJ- 0> 40 > â¦5 « 9 . a: 20 ⢠0 - â I - 1â f=1 - - b native ncr-natMe native non-native natKe non-natMe North Oentrd Souti Figure 3. Ground cover strata for forests by region, 1997-2000. (Bar =
. Critical Trends Assessment Program : 2001 report. Ecosystem management; Environmental monitoring; Natural resources surveys. 120. ndive norvrBtne natMe n>rvrBtii« ndi\« ncn-ndve ndi\e tcn-natM FotBBb GrasBtandB Wbtlands ^' Habitat Type Figure 2. Species richness across all sites and all strata, 1997-2000. (Bar = standard deviation) 1AI - 100 - p ^ E 3 80 - » ^^ c ^ eo- § L ⢠8 -^ ^ ~ , âJ- 0> 40 > â¦5 « 9 . a: 20 ⢠0 - â I - 1â f=1 - - b native ncr-natMe native non-native natKe non-natMe North Oentrd Souti Figure 3. Ground cover strata for forests by region, 1997-2000. (Bar = standard deviation) 22. 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 Natural Resources; Illinois. Office of Realty and Environmental Planning; Illinois. Natural History Survey Division; Critical Trends Assessment Project. Springfield, Ill. : Illinois Dept. of Natural Resources
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