Aquatic Ecosystems - Overview
Habitat Changes in the Upper Mississippi River Floodplain
Biota of the Upper Mississippi River Ecosystem
Fish Populations in the Illinois River
Contaminant Trends in Great Lakes Fish
Lake Trout in the Great Lakes
Wetlands in Regulated Great Lakes
Decline in the Freshwater Gastropod Fauna in the Mobile Bay Basin
Protozoa
Marine and Freshwater Algae
Freshwater Diatoms: Indicators of Ecosystem Change