Attributing Landbase Change: How Changes in the Landbase Affect Bird Species
In this section we evaluate how landbase changes (e.g. new forestry footprint, fire) from 2010-2018 in Norbord's operating areas are predicted to affect bird species.
In this section, we provide summaries of the overall predicted change in a species due to different types of change on the landbase, including changes as a result of forestry (new and old), non-forestry footprint (new and old), fire, and aging of undisturbed stands. In this section, we present roll-up figures for all bird species showing the effects of:
- New versus regenerating old forestry;
- Fires versus aging undisturbed stands;
- Net human footprint versus net natural changes.
Details for calculating attribution can be found in the Methods.
Canada Jay (Perisoreus canadensis)
Effects of Landbase Change
To view how different types of landbase change affect bird species in Norbord's operating areas, click on a section to explore results.
- New Forestry vs Old Harvest Areas
- Fire vs. Aging of Undisturbed Natural Stands
- Human Footprint vs. Natural Change
New Forestry versus Regeneration of Old Harvest Areas
- Another group of species in both operating areas shows little change at all (near 0 on both axes). Most of these are generalists, or species not affected by forestry because they do not live in forests (e.g., wetland species, open habitat species).
- Old-forest species are a distinct group that show a net decrease, sometimes strongly, due to forestry (below green line). They are reduced by new forestry, while older harvest areas are not old enough to provide good habitat. They are most distinct in the Northern Operating Area. In the Southern Operating Area, some of the less specialized old forest species show some compensating increase in older regenerating harvest areas.