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Creator:: Campbell, John L. and Donato, Daniel C.
Abstract:: Both the structure and composition of naturally generated early-seral forests in the Pacific Northwest (PNW) can be profoundly different than that of more developed forest seres, especially in the period after a major disturbance but before conifers re-develop a closed canopy. While it is reasonable to suggest that the unique...
Resource Type:: Article
Full Text:: structure and composition of naturally generated early-seral forests in 30 the Pacific Northwest (PNW) can

Creator:: Krankina, Olga N., Harmon, Mark E., Schnekenburger, Frank, and Sierra, Carlos A.
Abstract:: The management of federal forest lands in the Pacific Northwest (PNW) region changed in early 1990s when the Northwest Forest Plan (NWFP) was adopted with the primary goal to protect old-growth forest and associated species. A major decline in timber harvest followed, extending an earlier downward trend. The historic and...
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Full Text:: 2 ABSTRACT 46 47 The management of federal forest lands in the Pacific Northwest (PNW

Creator:: Lam, Tzeng Yih and Maguire, Douglas A.
Abstract:: Knowledge about the relationship between habitat structure and abundance of a target species facilitates biodiversity conservation in managed forests. However, modeling the relationship for infrequent small mammal species in silvicultural experiments introduces the challenge of excessive zero counts and complex hierarchical sampling. A common solution has been to ignore infrequent...
Resource Type:: Article
Full Text:: treatment. Only those sampling points with both vegetation and small mammal 156 information were used for

Creator:: Sensenig, Thomas, Bailey, John D., and Tappeiner, John C.
Abstract:: We studied stand development in three distinct forest types in southwestern Oregon using six stands each in uncut and clear-felled old-growth stands and nearby young stands (18 total). Old-growth stands showed a wide range of tree ages (>300 years) and low tree densities for several centuries; rapid early growth produced...
Resource Type:: Article

Creator:: Gray, Andrew N., Spies, Thomas A., and Pabst, Robert J.
Abstract:: Canopy gaps created by tree mortality can affect the speed and trajectory of vegetation growth, species’ population dynamics, and spatial heterogeneity in mature forests. Most studies focus on plant development within gaps, yet gaps also affect the mortality and growth of surrounding trees, which influence shading and root encroachment into...
Resource Type:: Article
Full Text:: . Gen Tech Rep PNW-8. USDA Forest Service Pacific Northwest Research Station, Portland, OR, 417 p

Creator:: Messier, Michael S., Shatford, Jeff P.A., and Hibbs, David E.
Abstract:: Euro-American settlement and organized fire suppression have been associated with structural and compositional changes in many upland forests of the western United States, but little is known about the impacts on riparian forests, portions of the landscape protected for habitat and water quality. In this study, we used dendro-ecological methods...
Resource Type:: Article
Full Text:: cores for 156 some trees (mostly large diameter) and therefore unable to determine their age. To

Creator:: Mulvey, Robin L., Shaw, David C., and Maguire, Douglas A.
Abstract:: The influence of fertilization on disease severity is unknown in most forest pathosystems. Fertilization treatments were randomly applied to 0.01 ha plots centered on individual dominant or co-dominant Douglas-fir trees in ten Douglas-fir stands from coastal Oregon to the foothills of the Oregon Cascade Range, USA. This region is affected...
Resource Type:: Article
Full Text:: ) 163 (60) 11 (1) CTC 2.47 (0.15) 0.55 (0.04) 0.77 (0.04) 0.15 (0.01) 1.36 (0.08) 0.15 (0.01) 24 (3) 156

Creator:: Roloff, Gary J., Mealey, Stephen P., and Bailey, John D.
Abstract:: We conducted a comparative hazard assessment for 325,000 ha in a fire-prone area of southwest Oregon, USA. The landscape contains a variety of land ownerships, fire regimes, and management strategies. Our comparative hazard assessment evaluated the effects of two management strategies on crown fire potential and northern spotted owl (Strix...
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Full Text:: used as criteria for implementing management 156 prescriptions and modeling fire and spotted owl

Creator:: Agee, James K. and Skinner, Carl N.
Abstract:: Successful fire exclusion in the 20th century has created severe fire problems across the West. Not every forest is at risk of uncharacteristically severe wildfire, but drier forests are in need of active management to mitigate fire hazard. We summarize a set of simple principles important to address in fuel...
Resource Type:: Article
Full Text:: . Northw. Sci. 71, 153–156. Agee, J.K., 2002. The fallacy of passive management: managing for firesafe

Creator:: Agee, James K. and Skinner, Carl N.
Abstract:: Successful fire exclusion in the 20th century has created severe fire problems across the West. Not every forest is at risk of uncharacteristically severe wildfire, but drier forests are in need of active management to mitigate fire hazard. We summarize a set of simple principles important to address in fuel...
Resource Type:: Article
Full Text:: . Northw. Sci. 71, 153–156. Agee, J.K., 2002. The fallacy of passive management: managing for firesafe

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