River and floodplain restoration, floodplain vegetation dynamics and ecohydrology, ecological functions of freshwater wetlands, biogeochemical cycling,
treatment wetlands, water quality, wetland creation and restoration, ecological engineering, system ecology and ecological modeling,
treatment wetlands,experimental mesocosms (scale effects), coal combustion by-products (FGD), fate of pollutants (nutrients and trace elements)
in soil andwater systems, ecological economics, coupled human and ecological systems