1. The amount of retention to be applied (% of cutblock area required as WTPs) is determined from Table 1-A.

This area is based on the proportion of each biogeoclimatic subzone in the landscape unit (LU), watershed, or other similar management unit that is operable, and the degree of development in the subzone that has occurred prior to application of these recommendations.

2. A greater amount of retention is required in landscapes that have high proportions of operable area, or where previous development has reduced wildlife tree abundance. 
    

3. Where landscape unit objectives are not established, use Table 1-B.

Given the absence of landscape objectives for biodiversity, WTP retention percentages are 3% higher than in
Table 1-A.

 

Habitat modification techniques

Trees with wildlife tree-like attributes such as broken tops, decayed heartwood, and artificial cavities can be created using various techniques. These habitat modification techniques can be used for rehabilitation of sites with few/no available wildlife trees. The techniques are discussed in Creating wildlife trees.