. Regeneration in mixed conifer shelterwood cuttings in the Cascade Range of eastern Oregon. Conifers; Forest regeneration Oregon; Forest regeneration Cascade Range. the Deschutes and Winema National Forests (fig. 1). A number of plant communities have been identified within this type by Volland (1976). Identification of these plant communities is based on the dominant overstory tree and the dominant understory shrub, forb, or grass. Plots were lo- cated in two of these com- munities: (1) a high elevation mountain hemlock/grouse huckle- berry community and (2) a lower elevation mixed conifer/
. Regeneration in mixed conifer shelterwood cuttings in the Cascade Range of eastern Oregon. Conifers; Forest regeneration Oregon; Forest regeneration Cascade Range. the Deschutes and Winema National Forests (fig. 1). A number of plant communities have been identified within this type by Volland (1976). Identification of these plant communities is based on the dominant overstory tree and the dominant understory shrub, forb, or grass. Plots were lo- cated in two of these com- munities: (1) a high elevation mountain hemlock/grouse huckle- berry community and (2) a lower elevation mixed conifer/ snowbrush-chinkapin community. The major tree species found in these communities are ponderosa pine (Pinus ponderosa Laws.), lodgepole pine (Pinus contovta Dougl.), Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), grand fir (Abies grandis (Dougl.) Lindl.) white fir (A. eonoolor (Gord. & Glend.) Lindl.), Shasta red fir (A. magnified var. shastensis Lernm.), western white pine (Pinus monticola Dougl.), and mountain hemlock (Tsuga mevtensiana (Bong.) Carr.). Understory vegetation in the mountain hemlock/grouse huckle- berry community is generally sparse, consisting primarily of grouse huckleberry (Vaeeinium scoparium), prince's pine (Chimaphila umbellata), and pine-mat manzanita (Arctostaphylos nevadensis). Major understory vegetation in the mixed- conifer/ snowbrush-chinkapin community consists of snowbrush (Ceanothus velutinus), golden chinkapin (Castanopsis. Figure of study areas in Oregon; eight to ten 10-acre plots were sampled in the vicinity of each dot. ehrysophylla), pine-mat manzanita, and dogbane (Apocynum pumilum). Some characteristics of the shelterwoods sampled are given in table 1. In the mountain hemlock community, the number of trees per acre in the residual overstory ranged from 11 to 34, of which 51 percent were mountain hemlock, 35 percent red fir, 6 percent grand fir, 5 percent white pine, plus small numbers of Engelmann spruce (Pieea engel
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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectconifers
