Wildfires mediate carbon transfer from land to lakes across boreal and temperate regions

Abstract Wildfires can disrupt carbon transport from land to water, but how lake carbon cycling responds to fires remains unclear. Here, we analyzed the concentration and dominance of the main carbon forms in total carbon pools in 54 lakes (34 burned, 20 control) across 3 regions of Quebec, Canada a...

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Main Authors: Mathilde Bélair, Ian M. McCullough, Christopher T. Filstrup, Jennifer A. Brentrup, Jean-François Lapierre
Format: Article
Language:English
Published: Nature Portfolio 2025-02-01
Series:Communications Earth & Environment
Online Access:https://doi.org/10.1038/s43247-025-02070-1
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author Mathilde Bélair
Ian M. McCullough
Christopher T. Filstrup
Jennifer A. Brentrup
Jean-François Lapierre
author_facet Mathilde Bélair
Ian M. McCullough
Christopher T. Filstrup
Jennifer A. Brentrup
Jean-François Lapierre
author_sort Mathilde Bélair
collection DOAJ
description Abstract Wildfires can disrupt carbon transport from land to water, but how lake carbon cycling responds to fires remains unclear. Here, we analyzed the concentration and dominance of the main carbon forms in total carbon pools in 54 lakes (34 burned, 20 control) across 3 regions of Quebec, Canada and Minnesota, USA from recent wildfires ( < 1 – 3 years). Lakes in burned watersheds had up to double the dissolved organic carbon concentrations of control lakes, and the fire effect was most apparent when accounting for climate and landscape drivers (e.g., catchment to lake area ratio) of lake carbon cycling. The greater quantity and dominance of dissolved organic carbon in burned lakes over other carbon forms with different turnover rates and fates suggest a potential fire-mediated carbon export up to several years post fire with a yet undetermined fate in northern forested watersheds and with important implications for regional to global carbon budgets.
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id doaj-art-2db54f22b2154eb4b3b9da507815ffa7
institution Kabale University
issn 2662-4435
language English
publishDate 2025-02-01
publisher Nature Portfolio
record_format Article
series Communications Earth & Environment
spelling doaj-art-2db54f22b2154eb4b3b9da507815ffa72025-02-09T12:55:59ZengNature PortfolioCommunications Earth & Environment2662-44352025-02-016111110.1038/s43247-025-02070-1Wildfires mediate carbon transfer from land to lakes across boreal and temperate regionsMathilde Bélair0Ian M. McCullough1Christopher T. Filstrup2Jennifer A. Brentrup3Jean-François Lapierre4Département de sciences biologiques, Université de MontréalDepartment of Fisheries and Wildlife, Michigan State UniversityNatural Resources Research Institute, University of Minnesota DuluthMinnesota Pollution Control AgencyDépartement de sciences biologiques, Université de MontréalAbstract Wildfires can disrupt carbon transport from land to water, but how lake carbon cycling responds to fires remains unclear. Here, we analyzed the concentration and dominance of the main carbon forms in total carbon pools in 54 lakes (34 burned, 20 control) across 3 regions of Quebec, Canada and Minnesota, USA from recent wildfires ( < 1 – 3 years). Lakes in burned watersheds had up to double the dissolved organic carbon concentrations of control lakes, and the fire effect was most apparent when accounting for climate and landscape drivers (e.g., catchment to lake area ratio) of lake carbon cycling. The greater quantity and dominance of dissolved organic carbon in burned lakes over other carbon forms with different turnover rates and fates suggest a potential fire-mediated carbon export up to several years post fire with a yet undetermined fate in northern forested watersheds and with important implications for regional to global carbon budgets.https://doi.org/10.1038/s43247-025-02070-1
spellingShingle Mathilde Bélair
Ian M. McCullough
Christopher T. Filstrup
Jennifer A. Brentrup
Jean-François Lapierre
Wildfires mediate carbon transfer from land to lakes across boreal and temperate regions
Communications Earth & Environment
title Wildfires mediate carbon transfer from land to lakes across boreal and temperate regions
title_full Wildfires mediate carbon transfer from land to lakes across boreal and temperate regions
title_fullStr Wildfires mediate carbon transfer from land to lakes across boreal and temperate regions
title_full_unstemmed Wildfires mediate carbon transfer from land to lakes across boreal and temperate regions
title_short Wildfires mediate carbon transfer from land to lakes across boreal and temperate regions
title_sort wildfires mediate carbon transfer from land to lakes across boreal and temperate regions
url https://doi.org/10.1038/s43247-025-02070-1
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AT christophertfilstrup wildfiresmediatecarbontransferfromlandtolakesacrossborealandtemperateregions
AT jenniferabrentrup wildfiresmediatecarbontransferfromlandtolakesacrossborealandtemperateregions
AT jeanfrancoislapierre wildfiresmediatecarbontransferfromlandtolakesacrossborealandtemperateregions