Bianca Han, an undergraduate student, compiled a table that compares the approval status of various tree species by municipality (Champaign, Savoy, and Urbana). The table highlight inconsistencies in biodiversity policies. As examples, scarlet oak and blue ash appear to be prohibited in Champaign, approved in Savoy, and not addressed in Urbana.

The table also illustrates possible sources of information developed in one municipality that could be used in others. For example, crabapple appears to be approved in Champaign but not addressed in Savoy and Urbana; English Oak appears to be approved in Savoy but not addressed in Champaign and Urbana; and river ash appears to be prohibited in Savoy but not addressed in Champaign and Urbana.