. Critical trends assessment program : keeping an eye on Illinois habitats. Critial trends assessment program; Habitat conservation. Results for the Grand Prairie Section • EPT richness was higher in reference streams than in randomly chosen channelized or meandering streams (Fig. 24). Stream size had less of an influ- ence on EPT richness, with no significant dif- ferences across small and large reference streams, but significant diflerences across large and small randomized streams. • HBI had lower (better) average scores in reference streams, but the difference was not significant. • HQI wa
. Critical trends assessment program : keeping an eye on Illinois habitats. Critial trends assessment program; Habitat conservation. Results for the Grand Prairie Section • EPT richness was higher in reference streams than in randomly chosen channelized or meandering streams (Fig. 24). Stream size had less of an influ- ence on EPT richness, with no significant dif- ferences across small and large reference streams, but significant diflerences across large and small randomized streams. • HBI had lower (better) average scores in reference streams, but the difference was not significant. • HQI was lowest among channelized, randomly selected streams. There was no difference between larger, meandering, randomly chosen and refer- ence streams. • OQI shows than the vast majority of streams in the Grand Prairie were in Poor and Fair condition (Fig. 25). Less than 22% of streams in the region can be classified as of Excellent or Good quality. Figure 25. Map of Grand Prairie Natural Divi 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. Natural History Survey Division; Illinois. Dept. of Natural Resources. Champaign, Ill. : Illinois Natural History Survey
Size: 1396px × 1789px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorillinoisnaturalhistorysurveydivision, bookcollectionb
