Forest Investment Account (FIA) - Forest Science Program
FIA Project Y071011

    Forest regeneration, growth, and development under seven silvicultural systems
Project lead: de Montigny, Louise (BC Ministry of Forests and Range - Research Branch)
Imprint: [BC] :, 2007
Subject: Forest Investment Account (FIA), British Columbia
Series: Forest Investment Account (FIA) - Forest Science Program
This project will determine how the stand growth, regeneration and development are affected by residual stand structures and the corresponding light availability under 7 different silvicultural systems 5 years after harvesting. Sampling will be done at the STEMS 1 (Silviculture Treatments for Ecosystem Management in the Sayward) experiment where the 7 different treatment regimes include: Extended Rotation (control); Extended Rotation with Commercial Thinning; Uniform Dispersed Retention; Aggregate Retention; Group Selection; Modified Patch Cuts and Clearcut with Reserves. Each of these treatment units is operational in size, from 10 to 35 ha. There are from 15 to 27 growth and yield (GY) assessment plots per treatment unit and 4 regeneration/vegetation (R/V) plots within each GY assessment plot for a total of 142 GY plots and 568 R/V plots. The large number of assessment plots will provide a high degree of reliability for estimates of within and between treatment variability. This experiment has true replication at different sites: the first replicate (STEMS 1) where this proposed sampling will be done, is located in the Snowden Demonstration Forest; a second replicate (STEMS 2), is located at Elk Bay and harvested by Interfor in 2005; and a third replicate will be harvested in 2008 by BC Timber Sales. In addition, there are 3 replicates established in the Capital Forest near Olympia Washington as part of “Silvicultural Options for Harvesting Douglas-fir Young-Growth Production Forests”, initiated and developed jointly by the managers of the Washington State Department of Natural Resources and the scientists of the Pacific Northwest Research Station. Replication of the treatment units across 3 sites in BC, and 3 in Washington result in high statistical power which will enhance the robustness of the results and increase the confidence in the interpretation and recommendations and will allow extrapolation from stand level to landscape level over a wide geographic area.
Related projects:  FSP_Y082011
Contact: de Montigny, Louise, (250) 387-3295,


Executive Summary (13Kb)

To view PDF documents you need Adobe Acrobat Reader, available free from the Adobe Web Site.

Updated August 16, 2010 

Search for other  FIA reports or other Ministry of Forests and Range publications.

Please direct questions or comments regarding publications to