Technical Report
 

Native plant revegetation at Butterfly Meadows (Benton County), habitat for the endangered Fender's blue butterfly

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https://ir.library.oregonstate.edu/concern/technical_reports/mk61rn806

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Abstract
  • Native prairies, which once dominated the landscape of the Willamette Valley, are considered among the rarest of Oregon's ecosystems and are in critical need of conservation. One of the largest remaining parcels of native upland prairie, Butterfly Meadows (Benton County), is being invaded by Brachypodium sylvaticum (false brome). This site is one of three most important remaining habitats for the Fender's blue butterfly and Kincaid's lupine, federally listed as Endangered and Threatened respectively. Most of Butterfly Meadows is owned by Starker Forests (Corvallis) with a small portion owned by Oregon State University. A partnership was formed in 2002 of people and organizations interested in protecting and restoring Butterfly Meadows: Fred Pfund (Starker Forests) Matt Blakeley-Smith (Institute for Applied Ecology) Deborah Clark (Oregon State University, Biology Program) Paul Hammond (Entomologist, Private consultant) Debbie Johnson (Oregon State University, College Forests) Tom Kaye (Institute for Applied Ecology) Bruce Kelpsas (Helena Chemical Company) In fall 2002, the partnership submitted a proposal (Control of Brachypodium sylvaticum and Restoration of Rare Native Upland Prairie Habitat at Butterfly Meadows, Benton County) and received funding from the Oregon Department of Agriculture. The project goal was and is to protect and restore rare Willamette Valley upland prairie habitat at Butterfly Meadows (Benton County) from invasion by the noxious weed Brachypodium sylvaticum (false brome). Since receiving funding in 2002, the partnership has developed and implemented herbicide treatments, beginning with small scale experiments, which control Brachypodium sylvaticum without harming native prairie vegetation or the Fender's blue butterfly. We used the results of these small-scale experiments to develop strategies for restoration of larger areas of the Butterfly Meadows, which Starker Forests has implemented at its own expense. These strategies have been relatively successful in controlling false brome, but we are now at a time where we need to revegetate these areas where false brome has been controlled. These areas are too large to quickly revegetate with existing native herbaceous species, so we need to augment the site with additional seed. Transplanting greenhouse grown plants is also an option but is much more costly. We hope to apply for additional funding elsewhere for these transplants.
  • Keywords: Icaricia icarioides fenderi, Benton County (Or.), Fender's blue butterfly, Endangered species, Upland prairie, Germination, Willamette River Valley (Or.), Native prairie, Habitat restoration, Conservation
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Peer Reviewed
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  • 4 pages
Additional Information
  • Report to the Native Plant Society of Oregon.

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