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A Silvicultural Guide to Managing Southern Ontario Forests, OMNR 2000
Note. The text has been revised in the on-line version.
This page is to alert the user to any updates and/or corrections to the printed version of the Guide.
1. Section 5.2 & 6.1, Residual Basal Area Target Tables for Tolerant Hardwoods, pages 115, 164-167 have been revised.
An error in transferring numbers to the final document occurred in the Tables related to ideal residual basal area targets for managing tolerant hardwoods. The following Tables have been adjusted: Tables 5.2.2 <Click here>, Table 6.1.4 <Click here>, Table 6.1.5 <Click here>, and Table 6.1.6 <Click here>, and Table 6.1.7 <Click here>.
The 'Ideal BA' by diameter class column did not change. These are reference points used by prescription writers. Most of the other numbers in the remaining columns have changed except of course the diameter classes.
The saplings size class was removed to be consistent with other silvicultural guides and the fact that trees less than 10-cm DBH are rarely marked. Readers should understand that properly managed tolerant hardwood stands under all the scenarios should be growing approximately 1m2 / ha of basal area in the sapling size class. The new total residual basal areas could be raised by 1m2 / ha for discussions or analysis that involves saplings.
2. Section 6.1, Group Selection Harvest Regulation, pages 177 to 180 has been revised <click here>.
Page 178. There were a few math errors in the Area Control Example used. The formula boxes remain correct.
Page 179. The Volume Control formula should have expressed the volume to be harvested as "m3/ cutting cycle" and not "m3/ha".
Page 180. In the Volume Control example the board foot conversions were slightly off and should be adjusted.
3. Section 5.3, Table 5.3.8 Conifer Defects, page 132 to 133 has been revised.
The content of a few cells in the table was mixed-up. As well, the recommended action for red ring rot has been modified <click here>.