The stream hit 24.6°C today, with dissolved oxygen dropping to 6.3 mg/L — both…

The stream hit 24.6°C today, with dissolved oxygen dropping to 6.3 mg/L — both at two-week extremes. Warm water simply cannot hold as much oxygen as cool water can, and for brook trout the thermal ceiling is already here: temperatures above 20°C begin to compromise their reproduc