Vegetation in the Flood Plain Adjacent to the Mississippi River between Cairo, Illinois, and St. Paul, Minnesota, and in the Flood Plain of the Illinois River between Grafton, Illinois, and Chicago, and the Possible Impacts That Will Result from the Construction of L & D 26 and the Associated Increase in Barge Traffic.

摘要

The primary objective of this study has been to describe the major plant communities found in both the protected and unprotected flood-plains in the study area. This included the distribution of each community in the study area, the location of the community relative to soil moisture and frequency of inundation, the dominant woody species in each community, the characteristic shrubs occuring in the mid-layer, and the major herbaceous plants in the understory. For each community, the investigator has surmised what the possible effects might be as a result of the construction and operation of Locks and Dam 26 (Replacement) and the increased barge traffic which may occur.