Illinois Natural History Survey - University of Illinois


The Critical Trends Assessment Program (CTAP) is a long-term endeavor, which monitors the condition of forests, wetlands, grasslands, and streams throughout the state of Illinois. This project seeks to assess changes in ecological conditions as well as to serve as a baseline from which to compare regional and site-specific patterns throughout Illinois.

Illinois Natural History Survey

1816 South Oak Street, MC 652
Champaign, IL 61820

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