Pacific Northwest Research Station (Portland, Or.)

Production, prices, employment, and trade in Northwest forest industries( )

in English and held by 573 WorldCat member libraries worldwide

Science findings by Or.) Pacific Northwest Research Station (Portland( )

in English and Undetermined and held by 478 WorldCat member libraries worldwide

Timber resource statistics for eastern Oregon, 1999( )

4 editions published between 2002 and 2004 in English and held by 477 WorldCat member libraries worldwide

From the forest to the sea : a story of fallen trees( )

3 editions published in 1988 in English and held by 470 WorldCat member libraries worldwide

Rangeland exclosures of northeastern Oregon : stories they tell (1936-2004) by Charles G Johnson( )

3 editions published in 2007 in English and held by 454 WorldCat member libraries worldwide

"Rangeland exclosures installed primarily in the 1960s, but with some from the 1940s, were resampled for changes in plant community structure and composition periodically from 1977 to 2004 on the Malheur, Umatilla, and Wallowa-Whitman National Forests in northeastern Oregon. They allow one to compare vegetation with all-ungulate exclusion (known historically as game exclosures), all-livestock exclusion (known historically as stock exclosures), and with no exclusion (known as open areas). Thirteen upland rangeland exclosures in northeastern Oregon were selected and are presented with plant community trend data and possible causes of changes over time. Key findings are that moderate grazing by native ungulates afforded by the livestock exclosures generally stimulated bunchgrasses to retain dominance and vitality; native bunchgrasses can replace invasive rhizomatous plants given a reduction in disturbance over time; shrubs increased without ungulate use in shrubland communities; and invasive annuals that established following severe disturbances to the grassland community diminished with aggressive competition from perennial bunchgrasses."

Ecology of the great gray owl by Evelyn L Bull( )

5 editions published in 1990 in English and held by 425 WorldCat member libraries worldwide

Integrated scientific assessment for ecosystem management in the Interior Columbia Basin, and portions of the Klamath and Great Basins by United States( )

3 editions published in 1996 in English and held by 415 WorldCat member libraries worldwide

"The Integrated Scientific Assessment for Ecosystem Management for the Interior Columbia Basin links landscape, aquatic, terrestrial, social, and economic characterizations to describe biophysical and social systems. Integration was achieved through a framework built around six goals for ecosystem management and three different views of the future. These goals are: maintain evolutionary and ecological processes; manage for multiple ecological domains and evolutionary timeframes; maintain viable populations of native and desired non-native species; encourage social and economic resiliency; manage for places with definable values; and, manage to maintain a variety of ecosystem goods, services, and conditions that society wants. Ratings of relative ecological integrity and socioeconomic resiliency were used to make broad statements about ecosystem conditions in the Basin. Currently in the Basin high integrity and resiliency are found on 16 and 20 percent of the area, respectively. Low integrity and resiliency are found on 60 and 68 percent of the area. Different approaches to management can alter the risks to the assets of people living in the Basin and to the ecosystem itself. Continuation of current management leads to increasing risks while management approaches focusing on reserves or restoration result in trends that mostly stabilize or reduce risks. Even where ecological integrity is projected to improve with the application of active management, population increases and the pressures of expanding demands on resources may cause increasing trends in risk"--page ii

SAMM : a prototype southeast Alaska multiresource model( )

3 editions published in 1990 in English and held by 414 WorldCat member libraries worldwide

Fire history and pattern in a Cascade Range landscape by Peter H Morrison( )

3 editions published in 1990 in English and held by 411 WorldCat member libraries worldwide

Managing forest ecosystems to conserve fungus diversity and sustain wild mushroom harvests( )

3 editions published in 1996 in English and held by 407 WorldCat member libraries worldwide