. Critical trends assessment program : keeping an eye on Illinois habitats. Critial trends assessment program; Habitat conservation. Private-Corporate 6% Private-Other 2% City 3% County 5% Federal 3% All CTAP Reference Sites—Land Ownership Other-local-gov 7% Private-individual 10%. Private-Corporate 5% Private-Other 17% County 20% Figure 2. The proportion of land ownership on CTAP random and reference sites, illustrates that the majority of the randomly selected site (72%) are owned by private landowners, whereas only 10% of the reference sites are privately owned. insects, this refers to site
. Critical trends assessment program : keeping an eye on Illinois habitats. Critial trends assessment program; Habitat conservation. Private-Corporate 6% Private-Other 2% City 3% County 5% Federal 3% All CTAP Reference Sites—Land Ownership Other-local-gov 7% Private-individual 10%. Private-Corporate 5% Private-Other 17% County 20% Figure 2. The proportion of land ownership on CTAP random and reference sites, illustrates that the majority of the randomly selected site (72%) are owned by private landowners, whereas only 10% of the reference sites are privately owned. insects, this refers to sites where the vegetation is in a pristine or least-disturbed condition (often limited to Illinois Nature Preserves or other protected high-quality natural areas). For birds, this refers to large and unfrag- mented tracts of forests, wetlands, and grasslands which are the only ones capable of supporting breeding and habitat dependent bird species (, forests >70, wetlands >13, and grasslands >80 hectares). Reference streams are those that have relatively clean waters, and just as importantly, those that remain in their natural condition with meanders, deep and shallow pools, with intervening riffles providing a variety of habitats for fish and aquatic invertebrates. 2 In the first section we present plant and bird data from the randomly selected and reference sites tor forests, wetlands, and grasslands. Terrestrial insect data are still being processed: therefore, no information is presented in this report. Aquatic insect data arc presented for randomly selected sites statewide and reference sites in the Grand Prairie Region (the states largest region). The final section of this report will provide a summary of our findings and future direc- tions of 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
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