Effects of partial understory removal on belowground and aboveground ecosystem properties were investigated in 5 and 15 yr old Douglas-fir (Pseudotsuga menziesll (Mirb.) Franco) experimental plantations in western Oregon. Seedling survival was not affected by understory removal at age 5 yr.
But through age 15 yr, understory removal increased seedling...
Intensive forest management (IFM, dense conifer plantings and herbicide applications) may alter the characteristics of early seral plant communities that function as major habitat resources for a host of wildlife species, including cervid herbivores such as Cervus elaphus and Odocoileus hemionus. Such large herbivores can also substantially affect plant community...
On piñon-juniper encroached sites that lack the understory fuels to carry a prescribed fire, treatment options are limited to mechanical methods. Cutting with chainsaws and leaving the trees on site has been the primary treatment method for such sites, however this method creates a potential fire hazard, particularly in the...
Forest managers of public lands in western Oregon and Washington have become increasingly interested in creating additional conifer cohorts in young, even-aged, second-growth Douglas-fir stands. The purpose of our research was to assess the establishment, survival, and growth of naturally-regenerated and underplanted conifers 10-13 years after overstory thinning and understory...
This PowerPoint presentation contains selected images pertaining to reforestation and vegetation management in the Pacific Northwest region of the United States. Viewers are welcome to use this PowerPoint or any images contained therein. The material has been assembled during much of the author’s career, so proper attribution would be appreciated...
It doesn’t come easy! Does any of your woodland
property look like the alder stand at the left? If your goal
is to convert this kind of ground to a productive conifer
forest, you should know it can be a challenging task.
You’ll have to do something with all that...
Policy regarding the management of public forests has undergone a drastic shift over the past couple of decades due to the loss old-growth forests in the Pacific Northwest (PNW) of the United States. For much of the 20th century, forest management on public lands emphasized timber production through the use...
Published April 1989. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
This classification is an update of the 2004 classification of native vegetation of Oregon by Kagan, Christy, Murray and Titus. As before, this classification lists the native plant associations known to occur in Oregon, and includes both successional and climax vegetation types that were part of the presettlement landscape of...
Among Oregon's major tourist attractions is the State's beautiful and impressive coastal
scenery. Sandy beaches, usually backed by sea-cliffs or dune fields, are regularly
disrupted either by the mouths of shallow bays and estuaries, or by massive rocky
headlands extending hundreds of meters into the Pacific Ocean. Storm-generated waves,
tides,...