• Nutrient budgets of Rivers
  1. Related Projects: Response of arctic rivers to longterm PO4 enrichment
  2. Nutrient control of sestonic and filamentous algae in Little Miami.
• Control of Primary Production in lakes
  1. UV effects on primary production in arctic lakes
  2. Nutient limitation of in Toolik Lake, Alaska
  3. Effects of environmental change on lake production over 20 years
• Bioassessment of fish communities in rivers
  1. Longterm monitoring of fishery of Great Miami River: 12 years.
  2. Fish composition biodiversity in small streams
• Impact of introduction of Non-indigenous Species in lakes and rivers
  1. Food sources for Zebra mussels in the Ohio River
  2. Ruffe: Ecosystem effects in St. Louis Harbor and Sandusky Bay
  3. Impact of zebra mussels on food and diet of native Unionids, Ohio River.
• Paleolimnology of lakes, climatic reconstruction of Holocene
  1. Toolik Lake, Alaska & Bering Land Bridge
  2. E. Siberia-Magadan
  3. Kola Peninsula
  4. Galapagos Islands, Ecuador
  5. Equatorial transect, Brazil
  6. El Valle, Panama
• Nutrient Regulation in Rivers
  1. Interaction of light, nutrients, attached+sestonic algae
  2. Nutrient dynamics, nutrient limitation in fertilized arctic rivers.

Dr. Miller has continued funded research in the arctic (27 years), on the Ohio River (11 years), on the Great Miami River (12 years), on the Little Miami River (2 years). He has worked extensively on lakes in Ecuador (7 expeditions), Brazil (2 expeditions), Panama and Mexico( 1 expeditin each), primarily examining limnology of lakes cored for climatic reconstruction using pollen, diatom, and chemical analyses. Students have worked on many of these projects. His research has covered water and sediment chemistry, whole system metabolism, primary production of phytoplankton and aquatic plants, lake nutrient budgets, lake restoration, benthic macroinvertebrate biodiversity in streams and rivers, zooplankton, larval fish and fish in rivers, and whole river nutrient budgets. Since many students find first employment in consulting companys, many projects involve impacts of power plants, bridge and road construction impacts, hazardous waste landfill operation, crude oil spills in lakes & rivers, road dust, uranium discharge and leachates from old AEC site, airline deicer discharges and sewage enrichment on rivers. He has worked on aquatic chemistry, DOC+POC dynamics, phytoplankton (including diatom) composition, zooplankton feeding and composition, macroinvertebrates in rivers, streams and lakes, fish composition of lakes, rivers and streams. Moreover,he has contributed paleolimnological data to a dozen published papers including extractable and organic cations and trace metals, degradation pigments, paleodiatoms, and paleochironmids. Recently, a series of projects have dealt with expansion of exotic species, particularly, zebra mussels and ruffe in the midwest and Great Lakes.