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Danebo wetland prairie project environmental education curriculum
One goal of this environmental education curriculum is that students will gain an appreciation of Willamette Valley wetland prairies, a threatened ecosystem, and will gain an understanding of the importance of […]
Why pest plant control and native plant establishment failed: A Restoration Autopsy
Explaining restoration failure can be as important as touting success. We used a series of studies to understand the failure of techniques commonly used to restore wetland prairies in the Willamette […]
Recommendations for control of tall oatgrass, poison oak, and rose in Willamette Valley upland prairies
Native upland prairies, which once dominated the landscape of the Willamette Valley, are considered among the rarest of Oregon’s ecosystems. Even though only remnants remain today, they harbor many rare and […]
Controlling tall oatgrass in Fender’s blue butterfly habitats
1. We report final results from a five-year field experiment evaluating the effects of different mowing regimes on groups of native and non-native grasses and forbs at a degraded prairie at […]
Management of Tall Oatgrass Arrhenatherum elatius in Willamette Valley Prairies: Preliminary Report. A component of the Project Restoration and Vegetation Management of Fender’s Blue Butterfly Habitats.
Native prairies, which once dominated the landscape of the Willamette Valley, are considered among the rarest of Oregon’s ecosystems. Even though only remnants remain today, they harbor rare and endangered species […]
Effects of Fire and Fire Fighting Techniques on Fender’s Blue Butterfly and Kincaid’s Lupine
We report results from a field experiment evaluating the effectiveness of mowing, mowing and herbicides, and burning on woody plants, key native and non-native grasses and forbs, and the Fender’s blue […]
Critical Habitat Components for Four Rare South Puget Sound Grassland Butterflies
We collected information on the life history requirements of four rare south Puget Sound butterflies in 1998-1999; the mardon skipper (Polites mardon), Puget blue (Plebejus icarioides blackmorei), Whulge checkerspot (Euphydryas editha […]
Streaked Horned Lark Habitat Management and Monitoring at the Willamette Valley National Wildlife Refuge Complex -2018 Annual Report
The Willamette Valley NWR Complex provided several hundred acres of potentially suitable habitat for breeding streaked horned larks (SHLA) during 2018. Habitat was provided at all 3 of the Complex refuges: […]
Research on habitat manipulation and management of Fender’s Blue Butterfly Areas: Final Report, prepared for Oregon Field Office, The Nature Conservancy, Oregon Natural Heritage Program, Portland, Oregon
We report first-year results from two field experiments evaluating the effectiveness of various techniques for the control of pest plants of Fender’s blue butterfly habitat. In the woody-plant study, we monitored […]
Effects of fire, mowing, and mowing with herbicide on native prairie of Baskett Butte, Baskett Slough National Wildlife Refuge
We report results from a field experiment evaluating the effectiveness of mowing, mowing and herbicides, and burning on woody plants, key native and non-native grasses and forbs, and the Fender’s blue […]