Reforestation study targets Atlantic salmon habitats in Québec rivers
Researchers studied the Dartmouth River in the Gaspé Peninsula to determine how planting trees on riverbanks can protect Atlantic salmon from rising water temperatures.
Solar radiation drives summer warming
Summer heat in Québec rivers threatens Atlantic salmon because even small temperature increases create hostile habitats. Solar radiation remains a primary energy source that warms river water during the warmer months. Degraded vegetation along stream edges allows more sunlight to reach the surface, raising water temperatures significantly.
Trees provide necessary shade
Planting trees in riparian zones creates shade that limits direct sun exposure on the water. This shading helps keep river temperatures cooler and supports the cold-water needs of Atlantic salmon. The study offers a new tool for identifying which areas will benefit most from reforestation efforts.
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