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CORVALLIS - A seminar series to begin April 8 at Oregon State University will explore how activities on land affect water quality and salmon habitat. The series of seven seminars, titled "Stream Quality and Habitat: Linkages to Micro and Macro Scale Landscape Processes," is sponsored by the soils program in OSU's Department of Crop and Soil Sciences.

Each of the Monday afternoon seminars will begin at 4 p.m. in Room 4000 of OSU's Agricultural and Life Sciences Building. All are free and open to the public.

The schedule:

• April 8: Hiram Li, assistant leader, Cooperative Fishery Research Unit, "Overview of stream quality and habitat - what are the factors that are most important for fish habitat?"

   

• April 15: Gordon Grant, research hydrologist, USDA Forest Service, "Effects of forest management on sediment mass movement."

   

• April 22: Robert Beschta, professor, forest engineering, OSU, "Riparian zones and stream temperature."

   

• April 29: Susan Bolton, College of Forest Resources, University of Washington, "Loss of soil water storage and holding capacity and instability of water sources for streams."

   

• May 6: Maria Dragila, assistant professor of soil physics, Department of Crop and Soil Science, OSU, "Preferential flow and pollution of streams."

   

• May 13: Robbins Church and Jana Compton, research ecologists, U.S. Environmental Protection Agency, "Controls on the chemistry of streams and nutrient budgets in a coastal Oregon watershed: Terrestrial vs. salmon-derived nutrients."

   

• May 20: Jim Thrailkill, coordinator, McKenzie Watershed, and Tom Hunton, general manager, Surecrop Farm Service, "Implementing landscape and watershed science into the social and economic environment."