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This section describes the history of the Illinois land survey, the methods used by surveyors, and gives some excerpts from surveyors' journals. It also describes how modern ecologists use land survey data to reconstruct past plant communities. How
do we know what plant communities existed in Illinois prior to European
settlement?
How
do scientists use the land survey records?
Land survey records also served as the basis for several pre-European vegetation reconstructions in Illinois. They are used to locate prairies and the prairie-forest border in Northeastern Illinois.
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