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September 10, 2025Scientific ReportsOpen Access

Radiocarbon evidence of river transport and food web uptake of old carbon in Lake Athabasca, Canada

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Authors

JCJohn ChételatCHCraig E. HebertCMChristine McClelland

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Overview

Analysis reveals that river transport influences food web dynamics in Lake Athabasca, indicating significant carbon cycling.

Key Points

  • Old carbon from the Athabasca River significantly influences the food web in Lake Athabasca.
  • Radiocarbon measurements indicated that modern carbon incorporation by aquatic organisms ranges from 20-50%.
  • Over 50 km of old carbon transport was detected into the lake, highlighting extensive river connectivity.
  • The study emphasizes the role of rivers in linking terrestrial carbon to aquatic ecosystems.

Cite This Study

Chételat et al. (2025) studied this question.

synapsesocial.com/papers/68c1d23a54b1d3bfb60f80f7https://doi.org/10.1038/s41598-025-15926-5
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1The Athabasca River regulates methylmercury burdens of waterbirds breeding downstream2026 · 1 citations
  2. 2Leakage of old carbon dioxide from a major river system in the Canadian Arctic2024 · 8 citations
  3. 3Changes in lake sediment carbon accumulation rates in southwestern Canada since the mid-1800s2025
  4. 4Millennial-scale carbon-source changes revealed by sedimentary radiocarbon in Arctic lakes2026
  5. 5Radiocarbon measurements of archived fish scales reconstruct past carbon cycle changes in a peri-alpine lake2024