. Critical trends in Illinois ecosystems. Ecological assessment (Biology); Environmental impact analysis; Nature; Pollution; Conservation of natural resources; Environmental quality. near Pawnee which had lower than average EPT richness and extremely low habitat quality. Cox Creek, a tributary of Panther Creek near ChandlervUle that drains part of the Jim Edgar Panther Creek State Fish and Wildlife Area had good habitat quality, above average EPT richness, but relatively high HBI scores. Over five years, RiverWatch \olunteers collected 47 samples at 30 sites on 28 streams. Monitoring indicates
. Critical trends in Illinois ecosystems. Ecological assessment (Biology); Environmental impact analysis; Nature; Pollution; Conservation of natural resources; Environmental quality. near Pawnee which had lower than average EPT richness and extremely low habitat quality. Cox Creek, a tributary of Panther Creek near ChandlervUle that drains part of the Jim Edgar Panther Creek State Fish and Wildlife Area had good habitat quality, above average EPT richness, but relatively high HBI scores. Over five years, RiverWatch \olunteers collected 47 samples at 30 sites on 28 streams. Monitoring indicates that the Sangamon watershed has near average stream watershed had fairly average scores in MBI and EPT taxa, indices of organic pollution. With respect to macroinvertebrate diversity, the watershed scored well in taxa dominance and poorly in taxa richness. Overall, the most abundant taxa collected from the Sangamon River watershed were midge larvae, stonefly larvae and sowbugs. The stonefly is an EPT taxa that is particularly sensitive to pollution. Stream qualin- and the number of sites monitored varied considerably from year to year, making detection of trends difficult. Also, streams in the watershed are subject to frequent flooding and are not always accessible to volunteers. Table 30. Watershed Indicator Scorecard. Indicator Watershed Value Statewide Value Watershed Ranking Mcicroiii I 'ertebrates HBI 4 MBI â 5 EPT richness 9.~ 2 EPT taxa (RWO S Taxa richness 8 Taxa dominance 4 Fish Native fish - Diirtcr riclincss 5 Exotic species 1 Hiibildl Habitat score 1 CTAP- INHS River Sites ® RiverWatch Sites A ForestWalcti Sites Figure 47. Monitoring sites. 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.
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