Field Studies

Study Summaries and Final Reports

NEW! Contaminants and Common Murre Die-Offs (December 2011)
Investigation of Persistent Seabird Mortalities along the Oregon Coast

Pesticides and Aquatic Organisms (May 2007)
Assessment of Impacts to Aquatic Organisms from Pesticide Use on the Willamette Valley National Refuge Complex

Nutrients and Oregon Spotted Frog (August 2005)
Evaluation of Nutrient Enrichment and Frog Response at Conboy Lake National Wildlife Refuge

Sewage Sludge and Oregon Chub
A Preliminary Investigation of Nutrients and Isotopic Nitrogen in Oregon Chub Habitat Adjacent to Oakridge Sewage Treatment Plant

Contaminants and Double-Crested Cormorants
Organochlorine Contaminants in Double-Crested Cormorants from Lewis & Cark National Wildlife Refuge in the Columbia River Estuary

Contaminants and Bald Eagles
Changes in Productivity and Environmental Contaminants in Bald Eagles Nesting Along the Lower Columbia River

Columbia River Food Chain Study
Environmental Contaminants in Aquatic Resources from the Columbia River

Summary of Ongoing Studies

Columbia River Water Sampling with Semipermeable Membrane Devices (SPMDs)
Sources of organochlorine compounds in the Columbia River: Evaluation of semipermeable membrane device extracts using the H4IIE bioassay