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  3. Wildfire Smoke Impacts Lake Ecosystems.
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  3. Wildfire Smoke Impacts Lake Ecosystems.

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Wildfire smoke impacts lake ecosystems.

Mary Jade Farruggia1, Janice Brahney2, Andrew J Tanentzap3,4

  • 1Department of Environmental Science and Policy, University of California Davis, Davis, California, USA.

Global Change Biology
|June 6, 2024

View abstract on PubMed

Summary
This summary is machine-generated.

Wildfire smoke significantly impacts North American lakes, with nearly all experiencing smoke exposure annually. This research quantifies lake smoke-days, highlighting widespread ecological risks from increasing wildfire activity.

Keywords:
ash depositionclimate changelake smoke‐daylakessmoke plumessolar radiationwildfirewildfire smoke

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Area of Science:

  • Environmental Science
  • Ecology
  • Atmospheric Science

Background:

  • Global wildfire activity is increasing, leading to widespread smoke plumes impacting ecosystems.
  • Lake ecosystems are sensitive to changes in light, chemistry, and nutrient deposition, all affected by wildfire smoke.

Purpose of the Study:

  • To introduce and quantify the concept of lake smoke-days in North America.
  • To assess the extent and duration of lake exposure to wildfire smoke from 2019-2021.
  • To review and synthesize the impacts of smoke on lake physical, chemical, and biological processes.

Main Methods:

  • Quantified lake smoke-day exposure across North America for lakes ≥10 ha from 2019-2021.
  • Analyzed spatial and temporal scales of smoke plume transport and deposition.
  • Reviewed existing literature on smoke-ecosystem interactions.

    • Main Results:

    • 99.3% of North America was covered by smoke, affecting over 1.3 million lakes.
    • 98.9% of lakes experienced at least 10 smoke-days annually; 89.6% had over 30.
    • Some regions experienced up to 4 months of cumulative smoke-days per year.

    Conclusions:

    • Lake smoke-day exposure is extensive and under-recognized across North America.
    • Smoke impacts lakes by altering light, depositing carbon and nutrients, and potentially introducing toxins.
    • Further research is crucial to understand lake responses to increasing wildfire activity and climate change.