Managing for Mature Habitat in Production Forests of Western Oregon and Washington
- 12 June 1996
- journal article
- symposium
- Published by Cambridge University Press (CUP) in Weed Technology
- Vol. 10 (2), 422-428
- https://doi.org/10.1017/s0890037x00040173
Abstract
Standard timber management practices in the Pacific Northwest result in stands which often vary from unmanaged stands in structure and composition. Forest and wildlife managers have identified a deficit of stands in the mature (> 100-yr-old) age class that contain certain desirable wildlife habitat features. Techniques are being developed that would increase the likelihood that managed stands can produce these characteristics. The key desirable components in these stands include large (> 75 cm diam breast height) conifer trees, snags, coarse woody debris, and understory structure, including regeneration. Vegetation management techniques can facilitate development of these components within stands. Thinning the overstory, underplanting shade-tolerant species, and creating snags and coarse woody debris can be accomplished within a production forest. Maintaining shade-intolerant species requires a higher level of disturbance and canopy opening than needed for shade-tolerant species. Treatments which remove competition from shrubs and herbaceous plants may be necessary to insure growth and survival of understory regeneration. Injection of different herbicides into low-grade conifers may yield different types of snags in comparison to girdling or topping. Although much of the understory may be eliminated during future thinnings and final harvest, some of the structure will remain and could be carried over into the next rotation along with snags and large coarse woody debris. These treatments are expected to enhance mature habitats in present and future cycles with minimum impact on yield.Keywords
This publication has 19 references indexed in Scilit:
- Maintaining and Creating Old Growth Structural Features in Previously Disturbed Stands Typical of the Eastern Washington CascadesJournal of Sustainable Forestry, 1994
- Growth response of young, thinned Douglas-fir stands to nitrogen fertilizer in relation to soil properties and tree nutritionCanadian Journal of Forest Research, 1994
- Discovery and Observations of Two Tree Nests of the Marbled MurreletOrnithological Applications, 1991
- Effects of fertilization and thinning on 8-year growth responses of second-growth Douglas-fir standsCanadian Journal of Forest Research, 1991
- Deposition and dissipation of three herbicides in foliage, litter, and soil of brushfields of southwest OregonJournal of Agricultural and Food Chemistry, 1990
- The effects of fertilization and thinning on wood quality of a 24-year-old Douglas-fir standCanadian Journal of Forest Research, 1989
- Long-term response of understory vegetation to stand density in Picea-Tsuga forestsCanadian Journal of Forest Research, 1988
- Residues from Organic Arsenical Herbicides in Chemically Thinned ForestsJournal of Environmental Quality, 1986
- Ecology of Coarse Woody Debris in Temperate EcosystemsAdvances in Ecological Research, 1986
- The Strategy of Ecosystem DevelopmentScience, 1969