• Projected mid-century warming here is the largest of any ecoregion in this enrichment pass (~5-6 °C under SSP3-7.0 in continental interior cells); the hardwood-boreal transition line is projected to advance north by a full ecoregion-band by century end.
• Sugar maple syrup operations across southern Quebec are at the climate-stress frontier — earlier sap flow, narrower harvest windows, and northward range shifts are all measurable.
• Garden-relevant: heritage Quebec orchards (apple, pear, plum) gain hardiness margin, but late-spring frost variability after warm-then-cold winter swings is increasingly the binding constraint, not winter cold itself.