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Steve Wondzell

Headshot photo of Steve Wondzell.

Research Riparian Ecologist
Pacific Northwest Research Station
Corvallis Forestry Sciences Lab

Contact via email
Phone: (541) 758-8753
Fax: (541) 750-7234

Curriculum Vitae (134 KB)

Statement of Research:


My research is broadly focused on both basic and applied problems in watershed management and on riparian and aquatic ecosystems. My basic research focuses on the interactions between hydrological, geomorphological, and ecological processes that create, maintain, or modify aquatic and riparian habitats, and the ways in which these processes either interact with, or are affect by, land-use practices. My applied research focuses on developing models and decision support tools that synthesize the current knowledge of aquatic and riparian systems into forms that can help inform management decisions at large spatial and temporal scales.

Projects & Activities:


Reddish dye tracks subsurface flows in mountain streams to determine how much of the water transits the hyporheic zone.

The Hyporheic Zone
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

Aerial photo of two watersheds with a patchwork of landscape conditions and landuses.

Stream Temperature Monitoring and Modeling
Exploring the factors controlling stream
temperatures and how they respond to
natural disturbance, land-use practices,
both passive and active restoration,
and climate change.
Project summary (PDF)

Aerial photo of the Middle Fork John Day River valley heading toward Coyote Creek.

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

1955 photo of vegetation on plot 11021 in Big Bend National Park, Texas.
2007 photo of vegetation on plot 11021 in Big Bend National Park, Texas.

Dynamics of Southwestern Plant Communities
This is a long-term study, started in 1955, using permanent plots and photo points to monitor changes in the desert grasslands and piñon-juniper woodlands of Big Bend National Park, Texas. Project summary (PDF)

Selected Publications: