Newspaper Archive of
The Issaquah Press
Issaquah, Washington
October 19, 1983     The Issaquah Press
PAGE 21     (21 of 28 available)        PREVIOUS     NEXT      Full Size Image
PAGE 21     (21 of 28 available)        PREVIOUS     NEXT      Full Size Image
October 19, 1983

Newspaper Archive of The Issaquah Press produced by SmallTownPapers, Inc.
Website © 2021. All content copyrighted. Copyright Information.     Terms Of Use.     Request Content Removal.

I i I I I I ! I _l Tiger Mtn. State Forest Planning Boundary Sensitive Area (Critical area for both resources and natural processes.) - area   , I I I1 I lnd-p.n,==,'-.,rzt oS- ..rh,= " . --,.....';.- L.- = ............ - ]m ;'-a.- J I _ indicated as capab/ of a proftablc return ffOr-t% ....  .... '=l'z-"'tt-J  trusts on a sustained-yield basis will be divided by the proposed rotation age. This schedule of indicating a certain percentage of the basin in the 0-10 year age class allows the manager the flexibility to choose, in any given year, either to harvest in small units, or to harvest a larger unit one year, perhaps for the conversion of a stand of hardwood to conifers, and then not harvest for two or three years. The constraint is that only a certain percentage of the basin can be in the 0-10 year age class. If harvest units are designed carefully, and arranged in a manner which takes into account impacts on water quality and soils, there should be minimal consequences in terms of erosion and water quality. This schedule allows the mountain to be harvested in a predictable manner and not be scalped as it was in the past. During every decade following the first rotation the same number of acres of rotation-age trees should be available for harvest for the benefit of the various trusts. Reforestation The purpose of reforestation is to plant desirable species before unwanted brush or hardwood can invade the site, thereby taking it out of production. Reforestation, either by planting or natural seeding, must occur as soon as practical after harvest to minimize erosion and to maintain the productivity of the forest. Planting larger stock (three or four years old) can reduce this competition. Under some harvesting systems, such as shelterwood or selective harvesting, natural re-seeding will take place. A primary consideration in selecting species for reforestation is that the healthiest forest for any given site is comprised of the trees best suited to that site. This means very close attention to aspect, slope, elevation, micro-climate, soils, and rainfall. A concern expressed by the Committee is that a "mono-culture" forest of only Douglas fir would be neither desirable nor wise on Tiger Mountain. Planting species best suited to the site will avoid this outcome. In addition, hemlock, a major natural component of the forest, is a prolific seed producer and thrives in the shade of other trees. As a result, a mixed hemlock/fir forest will probably result even if Douglas fir is the only planted species. Alder may also be a useful species in the forest because it naturally fixes nitrogen and contributes organic matter to the forest soil. With today's market for firewood, management of certain stands for alder might be a prudent decision. The Committee feels that the best way to maintain a healthy forest on Tiger Mountain is through rapid reforestation with an appropriate diversity of desirable species best suited to each site. A major concern expressed by the Committee is the maintenance of the genetic diversity of the main forest crop trees, such as Douglas fir and hemlock. Genetic diversity that was suitable for past situations may be inappropriate for the future. Rather than limiting the genetic base by narrow selection of stocks, maintenance of the present healthy gene pool as well as purposeful and car, eful introduction of stock from other areas will create a greater genetic amplitude. The current second growth stands on Tiger Mountain are derived from seeds of the original forest. Recent plantations are derived from seed in the same seed zone. Information about the composition of the forest before commercial logging began has been developed from turn-of-the-century data. Approximately 500 acres of the original forest remains (4 percent of the total acreage) from previous logging. These acres represent a "genetic resource management unit" which contains the oldest gene pool extant on Tiger Moun- tain. The existing mature forest should be retained as a genetic resource for future forest productivity and as an insurance policy against loss of nursery stocks in case of accident or catastrophe. Specific seed beds in the DNR nursery should be maintained for Tiger Mountain in order to have seedlings particular to the conditions of the various sites on the mountain. The previous species mix found on Tiger Mountain before the initiation of commercial logging should be considered as one possible combination of desirable forest cover. Unique Flora While much of the vegetation unique to Tiger Mountain and to the Issaquah Alps is found in the Wetland Areas (see below), other areas also have flora which is in need of special attention and protection. The Yah-er Wall, a sheer cliff visible along the Issa- quah/Hobart Road, contains a remnant stand of garry oak, a four acrepatch of madrona, as well as other dry site species, such as manzanita, Indian fern, poison oak, dwarf monkey flowers and ephemeral spring wildflowers. The summit of West Tiger III is a rocky, exposed knob where dry-site wildflowers and plants such as fringed pinesap, kinnickinick, and desert parsley occur. The appearance of these relatively uncommon plants on Tiger Mountain and the desire to maintain as great a diversity of species as possible requires special management practices. A third area identified as having flora unique to Tiger Mountain is the Big Tree area in the Tradition Lake watershed. Specimen trees, some over 1,000 years old, have survived logging and catastrophic wildfires. This area 24 9