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Creator:: Clark, Deborah Louise, 1950-
Abstract:: Wetland prairies of the Willamette Valley, among the rarest of Oregon’s ecosystems, are threatened by invasion of woody species and non-native pest species. Because fire has been important in maintaining Willamette Valley prairies for at least 1000 years, prescribed burning is a top choice of managers for preventing encroachment of...
Resource Type:: Technical Report
Full Text:: project. We thank Amy Clark, Tina Dreisbach, Linda Hasselbach, Keli Kuykendall, Scott Wadlow, Machelle

Creator:: Clark, Deborah Louise, 1950- and Wilson, Mark V.
Abstract:: Wetland prairies of the Willamette Valley, among the rarest of Oregon’s ecosystems, are threatened by invasion of woody species and non-native pest species. Because fire has been important in maintaining Willamette Valley prairies for at least 1000 years, prescribed burning is a top choice of managers for preventing encroachment of...
Resource Type:: Technical Report
Full Text:: , Tina Dreisbach, Linda Hasselbach, Keli Kuykendall, Scott Wadlow, Machelle Nelson, and Marilynn

Creator:: Clark, Deborah Louise, 1950- and Wilson, Mark V.
Abstract:: Our project goal is to promote the abundance of the endangered Fender’s blue butterfly (Icaricia icarioides fenderi) by recreating upland prairie habitat in former agricultural land at Finley National Wildlife Refuge, Corvallis, Oregon. To achieve this goal we initiated the following three studies. Study One: Experimental Investigation on the Effectiveness...
Resource Type:: Technical Report
Full Text:: ) and fertilizer (N-P-K-S: 7-7-0-5). About 25 pounds of charcoal are used per acre. After sowing on

Creator:: Clark, Deborah Louise, 1950-, Wilson, Mark V., and Goodridge, Jennifer
Abstract:: Native prairies of the Willamette Valley are considered among the rarest of Oregon’s ecosystems and are in critical need of conservation. Management strategies for increasing the abundance of native species are urgently needed, particularly those strategies that promote the regeneration of native species from seed. Fire may be an important...
Resource Type:: Technical Report
Full Text:: CITED Boag, P. G. 1992. Environment and Experience: Settlement Culture in Nineteenth- century

Creator:: Clark, Deborah Louise, 1950-
Abstract:: Erigeron decumbens var. decumbens, known only from the Willamette Valley of western Oregon, is listed as Endangered by the U.S. Fish and Wildlife Service and by the state of Oregon. In 1993 a long-term population monitoring program for Erigeron decumbens var. decumbens was initiated at Baskett Slough National Wildlife Refuge...
Resource Type:: Technical Report
Full Text:: ) in 1999 were not significantly correlated with the 1997-1999 mortality rate (P=0.31, R2= 3.43% and

Creator:: Wilson, Mark V., Clark, Deborah Louise, 1950-, and Roberts, Rachel E.
Abstract:: Willamette Valley wetland prairies are some of the most endangered ecosystems in the United States, and provide habitat for many federally listed species (Wilson et al. 1993, Noss et al. 1995, USFWS 2000, Schultz et al. 2003). A rigorous program of ecosystem restoration can protect and enhance wetland plants, animals,...
Resource Type:: Technical Report
Full Text:: Laboratory for the use of their excellent facilities. References Drake, D. K., K. Ewing, and P. Dunn. 1998

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