. Critical trends assessment Program 2002 report. Critical Trends Assessment Project; Ecosystem management; Environmental monitoring; Natural resources surveys. LAKES/CALUMET i Poor Figure 8. Average biological score in 33 suh-hasins. Numbers denote the number of sites sampled over the period. Sites could have from one to six samples, and each site's scores were averaged and weighted by natural division before the sub-basin score was calculated. 15. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appear
. Critical trends assessment Program 2002 report. Critical Trends Assessment Project; Ecosystem management; Environmental monitoring; Natural resources surveys. LAKES/CALUMET i Poor Figure 8. Average biological score in 33 suh-hasins. Numbers denote the number of sites sampled over the period. Sites could have from one to six samples, and each site's scores were averaged and weighted by natural division before the sub-basin score was calculated. 15. 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; Illinois. Natural History Survey Division; Critical Trends Assessment Project. [Illinois] : Illinois Dept. of Energy and Natural Resources, Office of Realty and Environmental Palnning : Office of Scientific Research and Analysis, Natural History Survey Division
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