Rising atmospheric CO₂ reduces nitrogen availability in boreal forests

www.nature.com

Rising atmospheric CO₂ reduces nitrogen availability in boreal forests

www.nature.com

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NatureEnglish · 5 days ago

Nature, Published online: 18 February 2026; doi:10.1038/s41586-025-10039-5

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.

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Nature is a weekly international journal publishing the finest peer-reviewed research in all fields of science and technology on the basis of its originality, importance, interdisciplinary interest, timeliness, accessibility, elegance and surprising conclusions. Nature also provides rapid, authoritative, insightful and arresting news and interpretation of topical and coming trends affecting science, scientists and the wider public.

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