Wildfire Smoke Chokes Lakes, Threatens Water Quality

Wildfire smoke, increasingly common due to climate change, is now understood to impact freshwater ecosystems far from the fires themselves. Scientists are studying how smoke particles deposited on lakes can fuel harmful algae blooms by introducing nutrients like nitrogen, phosphorus, and iron. This is particularly concerning for clear, low-nutrient inland lakes, which are highly susceptible to such changes.

The altered light spectrum caused by smoke also affects aquatic environments. Reduced light penetration can disrupt algae growth patterns, impacting the food available for fish. In western states, changes in light conditions linked to smoke have been observed to cause fish populations to scatter, potentially affecting their size and overall health.

Furthermore, wildfire smoke acts as a 'toxic soup,' containing compounds from burned vegetation, homes, and industrial sites. These toxins can wash into lakes and watersheds, ultimately entering the food web. Mercury and other harmful substances can accumulate in fish, leading to advisories against consumption and posing risks to both aquatic life and human health.