Forest Investment Account (FIA) - Forest Science Program
FII Project R04-027

    Silviculture treatments for ecosystem management in the Sayward (STEMS)
Author: de Montigny, Louise E.
Imprint: [Victoria], B.C. : British Columbia Ministry of Forests, 2004
Subject: Forest Investment Account (FIA), Socioeconomic factors, Forestry, Silvicultural systems
Series: Forest Investment Account (FIA) - Forest Science Program
Silviculture Treatments for Ecosystem Management in the Sayward (STEMS) is a large-scale, multi-disciplinary experiment that compares forest productivity, economics, and public perception of seven silvicultural regimes replicated at three sites in the Sayward Forest. The STEMS experiment uses silvicultural systems and extended rotation treatments to create diversity in forest structure that results in a variety of canopy layers (vertical structure) and spatial patchiness (horizontal structure) to enhance biodiversity and wildlife. The experiment examines seven different treatment regimes including: Extended Rotation (unharvested control) Extended Rotation with Commercial Thinning Uniform Dispersed Retention Aggregate Retention Group Selection Patch cut Clearcut with Reserves These silvicultural regimes create a range of gap sizes and frequencies that emulate natural variation in forest structure. The first replication of STEMS was established in 2001 in the Snowden Demonstration Forest. Ongoing studies include: Tree growth and stand development including understory vegetation Regeneration and light availability Windthrow, mortality and coarse woody debris recruitment Harvesting production and impacts of residual tree damage and soil disturbance (in partnership with FERIC) Visual quality and public response Pre- and post-treatment data has been collected. The cost and productivity of harvesting has been published as a FERIC Advantage report. All establishment procedures have been documented in an establishment report published as Research Branch Technical Report 017. The results of this experiment will be used to improve forest management and policies because results can be directly interpreted operationally due to the large-scale, replicated experimental design. The information will be especially relevant for forests with multiple-use objectives.
Louise de Montigny.


Final Project Abstract (22Kb)
Technical Report 017

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