H.J. Andrews Experimental Forest (AND) researchers invite collaborators to capitalize on several in-progress and pending large-scale field studies at AND.
A stream fertilization experiment, patterned in part after an Arctic site experiment, was conducted over a two-month period on lower Lookout Creek in summer 1991. Additional nutrient manipulations are planned for summer 1992 (S. Gregory).
Canopy gaps of various sizes were created in mature and old-growth conifer forests by tree removal in fall 1990 (T. Spies).
Pretreatment sampling is underway for two additional studies:
- Long- term site productivity effects of various levels of woody debris and silvicultural treatments in 90-year-old, post-wildfire stands
- Wildlife response and silvicultural effects of various forest structures and compositions created by experimental commercial thinning treatments in 40-to 50-year-old conifer plantations (J. Tappeinere). Manipulations are planned for 1993.
For further information on these and other projects, contact project leaders (names in parens), A. McKee (Site Coordinator), or F. Swanson (Principal Investigator), Oregon State University, Forestry Sciences Laboratory, 3200 Jefferson Way, Corvallis, OR 97331.
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