Silviculture is the practice of applying different treatments and methods such as partial cutting, fertilization, planting density, and thinning to influence forest establishment, composition, and growth. Researchers from the Silviculture Systems and Forest Dynamics working group have established long-term interdisciplinary field experiments that study the impacts of silvicultural practices on tree growth and yield, wood quality, regeneration, forest health, and above- and below-ground timber and non-timber resources.
The Silviculture Systems and Forest Dynamics working group is committed to providing extension tools and the best available information for a wide range of clients, including forest managers and practitioners in industry and government, growth and yield modellers, and the scientific community in order to make sound resource management decisions. The long-term field experiments become more valuable over time, as complex issues such as the mountain pine beetle outbreaks and climate change require forest managers to predict impacts well into the future. The data generated over the long term greatly improve and validate the predictive capability of stand development models such as the Tree and Stand Simulator (TASS) and TIPSY.The Silviculture Systems and Forest Dynamics working group is providing valuable information and technical support to Ministry initiatives such as the Future Forest Ecosystems Initiative, operational fertilization under Forests for Tomorrow, and ongoing priorities such as Timber Supply Review and Annual Allowable Cut determinations, Type 1 and Type 2 Silviculture Strategies, Ecosystem-Based Management, the Coast Forest Action Plan and second-growth management, and non-timber forest product management.
Stand Management Cooperative (University of Washington), Chair—providing a continuing source of high-quality information on the long-term effects of silvicultural treatments and treatment regimes on stand and tree growth and development and on wood and product quality. A co-operative effort of landowners, processors, research agencies, and universities from throughout the Pacific Northwest.
Science Committee—Ministry of Environment—facilitating the development and application of a framework to assist the application of science in the Ministry’s work; providing advice and recommendations to the Minister, Deputy Minister, and Ministry Executive on enhancing the use of science in policy development, strategic planning, decision-making, and monitoring processes; providing the Executive with progress updates on the use of science within the Ministry, and on associated issues.
Mountain Pine Beetle Stewardship Research Strategy and Mountain Pine Beetle Implementation Plan, Technical Advisory role—Identifying and prioritizing knowledge gaps by client groups and researchers to help co-ordinate projects to resolve stewardship research issues.
Future Forest Ecosystems Initiative, Technical Committee—Leading the co-ordination of research knowledge to develop a sound scientific foundation for understanding climate change and ecosystem resilience.Forests for Tomorrow, Operational Fertilization Program, Technical Advisory role—accelerating the development of immature spruce and Douglas-fir stands to partially mitigate the negative impacts of the current mountain pine beetle epidemic on future timber supply and to preserve the stability and economic well-being of forestry-dependent communities.
Antos, J.A., R. Parish, and G. Nigh. 2008. Growth patterns prior to mortality of mature Abies lasiocarpa in old growth subalpine forests of southern British Columbia. For. Ecol. Manage. 255(5-6): 1568-1574.
Berch, S.M. and R.P. Brockley. 2008. Effects of repeated fertilization on fine roots, mycorrhizae, and soil mesofauna in young lodgepole pine and spruce forests in central British Columbia. B.C. Min. For. Range, Res. Br., Victoria, B.C. Exten. Note 84.
Berch, S.M. and R. Brockley. 2007. Impacts of fertilization on soil biota of young lodgepole pine and interior spruce stands in the interior of British Columbia. Presentation at North American Forest Ecology Workshop, University of British Columbia, Vancouver, B.C.
Berch, S.M., R.P. Brockley, J. Battigelli, and S. Hagerman. . Impacts of repeated fertilization on components of the soil biota under a young spruce stand in the interior of British Columbia. Can. J. For. Res. Submitted.
Berch, S.M., R.P. Brockley, J. Battigelli, S. Hagerman, and B. Holl. 2006. Impacts of repeated fertilization on components of the soil biota under a young lodgepole pine stand in the interior of British Columbia. Can. J. For. Res. 36:1415–1426.
Brockley, R.P. 2008. Can thinning and fertilizing young lodgepole pine mitigate future timber supply challenges? B.C. Min. For. Range, Res. Br., Victoria, B.C. Exten. Note 82.
Brockley, R.P. 2007. Assessing the effects of fertilization on understorey vegetation in young lodgepole pine and spruce forests in central British Columbia. B.C. Min. For. Range, Victoria. B.C. Exten. Note 81.
Brockley, R.P. 2007. Effects of 12 years of repeated fertilization on the foliar nutrition and growth of young lodgepole pine in the central interior of British Columbia. Can. J. For. Res. 37: 2115-2129.
Brockley, R.P. . Effects of post-thinning density and repeated fertilization on the growth and development of young lodgepole pine. B.C. Min. For. Range, Victoria. Extension Note. In press.
Brockley, R.P. 2006. Comparing the effects of urea and ammonium nitrate fertilizers on the growth and foliar nutrition of lodgepole pine: 6-year results. B.C. Min. For. and Range, Victoria, B.C. Exten. Note 78.
Brockley, R.P. 2006. Effects of fertilization on the growth and foliar nutrition of immature Douglas-fir in the Interior Cedar-Hemlock zone of British Columbia: six-year results. B.C. Min. For. Range, Victoria, B.C. Res. Rep. 27.
Brockley, R.P. and P. Sanborn. 2007. Assessing the effects of Sitka alder on the growth and foliar nutrition of young lodgepole pine in central British Columbia (SBSdw3): 9-year results. B.C. Min. For. and Range, Victoria, B.C. Extension Note 79.
de Montigny, L. and R. Negrave. . Effects of pruning severity on the growth of juvenile western redcedar twelve years after pruning. West. J. Appl. For. In press.
de Montigny, L. and G. Nigh. 2007. Density frontiers for even-aged Douglas-fir and western hemlock stands in coastal B.C. For. Sci. 53(6):675-682.
de Montigny, L. and G. Nigh. 2007. Growth and survival of Douglas-fir and western redcedar planted at different densities and species mixtures. B.C. Min. For. Range, Res. Br., Victoria, B.C. Tech. Rep. 044.
Grayston S.J. J.A. Addison, S.M. Berch, L. de Montigny, D.M.Durall, K.N. Egger, M.D. Jones, R. Modesto, W.W. Mohn, T.S. Panesar, C.E. Prescott, and DS Srivastava. 2006. Green tree retention: A tool to maintain soil function after harvest. B.C. J. Eco. and Manage. 7: 9-12.
Grayston S.J. J.A. Addison, S.M. Berch, L. de Montigny, D.M.Durall, K.N. Egger, M.D. Jones, R. Modesto, W.W. Mohn, T.S. Panesar, C.E. Prescott, S.W. Simard, and DS Srivastava. 2005. Potential of green tree retention as a tool to maintain soil function after harvest. In Balancing ecosystem values: innovative experiments for sustainable forestry. Proceedings of a conference. Peterson, Charles E.; Maguire, Douglas A., (editors). 2005. U.S. Dep. Agric., For. Serv., Pac. NW Res. Stat., Portland, Oreg. Gen. Tech. Rep. PNW-GTR-6-35 389p. pp. 353-355.
Harper, G. 2008. Quantifying the branch, crown and bole development of Populus tremuloides Michx. from north-eastern British Columbia. For. Ecol. Manage. 255(7): 2286-2296.
Harper, G., K. Polsson, and J. Goudie. 2008. Modelling vegetation management treatments with the Tree and Stand Simulator. The For. Chron. 84: 53-59.
Johnstone, W.D. 2008. The effects of initial spacing and rectangularity on the early growth of hybrid poplar. West. J. Appl. For. 23(4): 189-196.
Johnstone, W.D. and F.J. van Thienen. 2006. A summary of 10- and 15-year results from Douglas-fir thinning experiments in the British Columbia interior. B.C. Min. For. Range, Victoria, B.C. Tech. Rep. 027.
Lindgren, P.M.F., T.P. Sullivan, D.S. Sullivan, R.P. Brockley, and R. Winter. . Growth response of young lodgepole pine to thinning and repeated fertilization treatments: 10-year results. Forestry. In press.
Mansfield, S.D., R. Parish, J.W. Goudie, K-Y Kang, P. and Ott, 2007. The effects of crown ratio on the transition from juvenile to mature wood production in lodgepole pine in western Canada Can. J. For. Res 37(8): 1450-1459. [abstract]
Nigh, G., L. de Montigny, M. Eng, and R. Archer. 2006. Development of a research strategy for mountain pine beetle issues associated with Forest Stewardship Division Functions. B.C. Min. For. and Range, Res. Br., Victoria, B.C. Tech. Rep. 034.
Parish, R. and J.A. Antos. 2006. Slow growth, long-lived trees and minimal disturbance characterize the dynamics of an ancient, montane forest. Can. J. For. Res. 34:2826–2838.
Parish, R., G.D. Nigh, and J.A. Antos. 2008. Allometry and size structure of trees in two ancient, snow forests in coastal British Columbia. Can. J. For. Res.38(2): 278-288.
Sanborn, P.T. and R.P. Brockley. . Litter decomposition in a young lodgepole pine - Sitka alder stand in the central interior of British Columbia. Plant and Soil. Submitted.Vyse, A. and R. Parish. . Is natural regeneration a feasible option for reforesting high elevation fir-spruce stands after logging in south central British Columbia? B.C. Min. For. Range. Victoria, B.C. Exten. Note RSI. In press.
Ministry of Forests and Range