Example of how to use the Tree Species Selection Tool

This example for using the Tree Species Selection Tool provides a scenario, followed by a table with a series of questions that show how the tool can be used.

Example 1 – Western larch (Lw) in one of the sub-boreal spruce dry zones (SBSdk), in the Morice TSA. How to apply Lw expanded range map:

Example of the tool's use




What has the natural and managed landscape supported in terms of tree species?

Tree Species Selection Tool: SBSdk – tree species overview (PDF, 182KB)

Composition and proportion of tree species in the mature and older stands, and principal species in managed stands.

What are the basic silvics of Lw and suitable site series/edaphic conditions in the SBSdk?

Tree Species Selection Tool: Silvical information, western larch (PDF, 419KB)

Tree Species Selection Tool: BEC site series information SBSdk, description of sites

Shade intolerant, infrequent on moist and very moist sites, tolerates acid substrates, frost intolerant.

What are the ecologically suitable species in the SBSdk?

Tree Species Selection Tool: SBSdk – ecologically suitable tree species list (SBSdk tab in the SBS ecologically suitable tree species workbook)

Fd ecologically suitable but currently only in the eastern portion of the SBSdk. Ecologically suitable species review by regional specialists team developed the ecologically suitable species list without a management filter.

Are there forest health risks to Lw in the area?

Tree Species Selection Tool: Regional and District /TSA forest health strategies

Also check with HQ and regional forest health specialists Forest health maps – shows short and long-term hazards.

Check for other species choices, e.g., Pl, Sx, Fd in the SBSdk species lists and their forest health risks.

Are there any operational or study data on Lw planting?



  • Options – to mitigate risk and develop an understanding of suitable sites, plant mixtures of Lw with Pl and/or Sx, and not to exceed 50% stocking; and preferably clearly marked for tracking its progress.