Native prairies of the Willamette Valley are considered among the rarest of Oregon's ecosystems (Clark and Wilson, 2001). As a result of agriculture conversion, urban development and cessation of native burning, Willamet ...
Daggett, Steve; Boule, Marc; Bernert, Joseph A.; Eilers, Joseph M.; Block, Elaine; Peters, Dennis; Morlan, Janet C.(Wetlands Program, Oregon Division of State Lands, 1998-12)
Lawrence Halprin & Associates(Lawrence Halprin & Associates, 1972)
This book is an environmental primer for the people of the Willamette Valley. It sets forth basic principles showing how men's actions cause future consequences in the envirnoment.