Columbia Estuary Data Development Program - Tidal Marsh Plant Production in the Columbia River Estuary

The Emergent Plant Primary Production Work Unit of the Columbia River Estuary Data Development Program (CREDDP) describes the species composition, standing crop, and primary production dynamics of the tidal marsh vegetation found within the estuary. An estuary-wide field reconnaissance conducted in October 1979 confirmed the floristic diversity of Columbia River Es

Columbia Estuary Data Development Program - Marine Mammals of the Columbia River Estuary

The Marine Mammal Investigations team of the Washington Game Department began an extensive research program in 1980 to document marine mammal populations of the region and document their relationship to fisheries of the area. The overall research program has received funding from multiple sources, including: National Marine Fisheries Service, the U.S.