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Advanced filters: Author: Stefan F. Hupperts Clear advanced filters
  • Nitrogen isotope tree-ring chronologies show that rising atmospheric CO2 has reduced nitrogen availability in boreal forests in Sweden, suggesting that elevated atmospheric CO2 is causing oligotrophication in boreal forests.

    • Kelley R. Bassett
    • Stefan F. Hupperts
    • Michael J. Gundale
    ResearchOpen Access
    Nature
    Volume: 650, P: 629-635