Therefore , the Indiana Department of Natural Resources has assisted the regeneration by mechanically removing trees , woody brush and implementing ' prescribed fires ' .
Prairie maintenance is dependent upon a natural regime of fire , which has been suppressed in this urban area .
The Indiana Department of Natural Resources has assisted the regeneration by mechanically removing trees , woody brush and implementing ' prescribed fires ' .
Prairie maintenance is dependent upon a natural regime of fire , which has been suppressed in this urban area .