• Photo: small headwater stream in the Oregon Coast Range.

    Density Management and Riparian Buffer Study

    Density Management and Riparian Buffer Study
    Investigation of aquatic-dependent vertebrates within and along headwater streams in managed
    forests of western Oregon. Read more
  • Fractal dimension as a measure of salmonid habitat availability in estuaries along the Oregon Coast.

    Climate change and salmon
    in the Oregon Coast Range

    Climate change and salmon in the Oregon Coast Range
    Sea level rise will inundate estuaries changing the amount and location of critical estuarine habitats for salmon. Changes in stream flow and water temperature will impact stream habitat. Read more
  • View of Mount St. Helens, looking across the Pumice Plain from Spirit Lake toward the crater created by the 1980 eruptions.

    Mount St. Helens Research

    Mount St. Helens Research Photo by Charlie Crisafulli
    On May 18, 1980, after weeks of tremors, Mount St. Helens erupted spectacularly and profoundly changed
    a vast area surrounding the volcano. In the 30 years since the catastrophic eruption, scientists with the Land
    and Watershed Management Program, along with their colleagues, have used the volcano as a living
    laboratory for ecological research. Read more
  • Autumn view looking eastward up the Columbia River Gorge.

    Salmon Recovery in the Columbia River Basin

    Salmon Recovery in the Columbia River Basin
    To help restore wild salmon and steelhead runs, two committees of independent scientists provide scientific oversight to the nation’s largest freshwater ecological restoration program. Read more
  • Historical photo of an 8-man logging crew atop the open gate of a splash dam in an Oregon Coast Range stream.

    Splash Dams and Log Drives

    Splash Dams and Log Drives
    Historical ecologists use clues from the past to piece together what an area might have looked like, what management practices took place, and to what degree those practices still influence current conditions.
    Splash damming and log driving were among the earliest reported management disturbances in rivers
    of the Pacific Northwest. Read more
  • Reddish dye tracks subsurface flows in mountain streams to determine how much of the water transits the hyporheic zone.

    Hyporheic Zones and
    Mountain Streams

    Hyporheic Zones and Mountain Streams
    Exploring the factors that control stream-groundwater interactions and create hyporheic zones in
    mountain stream networks and quantifying their effects on stream ecosystem processes. Read more
  • Three men stand on a large log among large woody debris and sediment deposited by a debris flow.

    Debris Flows

    Debris Flows
    In many mountainous regions, debris flows can be an important factor determining stream-habitat
    conditions. Human activities can influence the frequency, magnitude, and content of debris flows.
    Thus, understanding about debris-flow processes and effects are important to stream conservation
    and sustainable forest management. Read more
  • Upper Middle Fork John Day River, eastern Oregon.

    Aquatic/Riparian Stream Network Modeling

    Aquatic/Riparian Stream Network Modeling
    Integrating riparian zone mapping with state-and-transition models to project the response of
    riparian zones, stream channels and salmon habitat to plant succession, natural disturbance and
    land-use activities. Read more
  • A small stream cascades over a large log in a step-pool configuration common to headwater streams.

    Small, Forested Wetlands

    Small, Forested Wetlands Photo by Alex Foster
    Starting in 2004, we examined wetland features along headwater streams as part of a larger study
    focused on the effects of forest management in headwater riparian areas. We were interested in the
    frequency, surface area, and other attributes associated with the many small, cryptic wetlands observed
    along the headwater streams of the forestry study. Read more