2409.17,9 Page 1 of 3 FOREST SERVICE HANDBOOK PORTLAND, OREGON TITLE 2409.17 - SILVICULTURAL PRACTICES HANDBOOK R-6 Supplement No. 2409.17-93-2 Effective December 17, 1993 POSTING NOTICE. Supplements are numbered consecutively by title and calendar year. Post by document name. Remove entire document, if one exists, and replace with this supplement. The last R-6 Supplement to this handbook was 2409.17-93-1 (2409.17,8). Document Name 2409.17,9 Digest: Provides Region 6 stocking guide information. JOHN E. LOWE Regional Forester Superseded New (Number of Sheets) 3 R-6 SUPPLEMENT 2409.17-93-2 EFFECTIVE 12/17/93 2409.17,9 Page 2 of 3 FSH 2409.17 - SILVICULTURAL PRACTICES HANDBOOK R-6 SUPPLEMENT 2409.17-93-2 EFFECTIVE 12/17/93 CHAPTER 9 - TIMBER STOCKING GUIDES AND GROWTH PREDICTIONS 9.06 - Theory and Concepts. Use stocking level guides to determine stand density relative to a reference level. Compare this relative stand density to predetermined stocking levels displayed in the guide. Identify need for stocking control, and options for timing and target residual density. For concepts and techniques used in managing stand density, refer to: Ernst, R.L. and W.H. Knapp. 1985. Forest stand density and stocking: concepts, terms, and the use of stocking guides. USDA Forest Serv., Wash., DC. Gen. Tech. Rep. WO-44. 8 p. Recognize the underlying assumptions and limitations of the stocking guide when prescribing for stand density. The applicability of a particular guide to a specific stand depends on assumptions made in guide development regarding: 1. Species composition. Stocking level guides are most often developed for single-species stands; less often for a specific, mixed-forest type. Where greater species diversity is favored in management objectives, temper recommended stocking levels with an evaluation of growth and density relationships among the species present. 2. Stand structure. Stocking level guides are most often developed for stands with an even-aged structure; less often for multi-storied stands. Where greater structural diversity is favored by management objectives, temper recommended stocking levels with evaluation of growth and density relationships of the structural components present. 3. Recommended stocking levels. The upper and lower bounds of recommended stocking levels in most published guides are based on a single objective: maximize wood fiber production. Where stand management objectives emphasize other forest resources, adjust recommended stocking levels to reflect stand densities and structures that benefit those resources. 9.1 - Stocking Guide Development. 9.11 - Existing Regional Stocking Guides. Use the stocking guides from these publications that best fit the composition of the stand for which management is being prescribed: 1. Westside species. Drew, J.T. and J.W. Flewelling. 1979. Stand density management: an alternative approach and its application to Douglas-fir plantations. Forest Science 25(3): 518532. R-6 SUPPLEMENT 2409.17-93-2 EFFECTIVE 12/17/93 2409.17,9 Page 3 of 3 Long, J.N., J.B. McCarter, and S.B. Jack. 1988. A modified density management diagram for coast Douglas-fir. West. J. Appl. Forestry 3(3): 88-89. Hibbs, D.E. 1987. The self-thinning rule and red alder management. Ecology and Management 18(1987): 273-281. Forest Hibbs, D.E. and G.C. Carlton. 1989. A comparison of diameter- and volume-based stocking guides for red alder. West. J. Appl. Forestry 4(4): 113-115. Curtis, R.O. 1982. A simple index of stand density for Douglas-fir. Paine, D.P. and D.W. Hann. 1982. Maximum-crown width equations for southwestern Oregon tree species. Oregon State Univ., School of Forestry, Res. Pap. 46. 2. Eastside Species. Cochran, P.H. 1991. Stocking levels and underlying assumptions for uneven-aged ponderosa pine stands. USDA Forest Service, PNW Research Station, Res. Note. PNW-RN-509. 10 p. Cochran, P.H. 1985. Site index, height growth, normal yields, and stocking levels for larch in Oregon and Washington. USDA Forest Service, PNW Forest & Range Experiment Station, Res. Note. PNW-424. 24 p. Seidel, K.W. and P.H. Cochran. 1981. Silviculture of mixed conifer forests in eastern Oregon and Washington. USDA Forest Service PNW Forest and Range Exp. Station, Gen. Tech. Rep. PNW-121, 70 p. (page 49). Barrett, James W. 1979. Silviculture of ponderosa pine in the Pacific Northwest: the state of our knowledge. USDA Forest Service, PNW Forest and Range Exp. Station, Gen. Tech. Rep. PNW-97. 106 p. (see figs. 21 and 22). Peterson, William C. and David E. Hibbs. 1989. Adjusting stand density guides for sites with low stocking potential. West. J. Appl. Forestry 4(2): 62-65. Flewelling, J.W. and J.T. Drew. 1985. A stand management diagram for lodgepole pine. pp. 239-244 in Lodgepole pine: the species and its management. Symposium proceedings. David M. Baumgartner et al., eds. Wash. State Univ. 1985. McCarter, J.B. and J.N. Long. 1986. A lodgepole pine density management diagram. West. J. Appl. Forestry 1(1):6-11. 1986. Edminster, Carleton B. 1988. Stand density and stocking in even-aged pine stands. pp. 253-260 in Ponderosa pine--the species and its management. Symposium proc. David M. Baumgartner and James E. Lotan, eds. Wash. State University, Pullman, WA. R-6 SUPPLEMENT 2409.17-93-2 EFFECTIVE 12/17/93 2409.17,9 Page 4 of 3 Smith, F.W. and J.N. Long. 1987. Elk hiding and thermal cover guidelines in the context of lodgepole pine stand density. West. J. Appl. Forestry 2(1):6-10. 1987. Page, Douglas H. 1981. The use of Reineke's stand-density index for uneven-aged timber management.