Boreal forest tree growth and sap flow after a low-severity wildfire

Boreal forests are exposed to larger and more frequent fires due to climate change, with significant consequences for their carbon and water balances. Low-severity fires (trees charred but surviving) are the most common fire regime in the Eurasian boreal forest, but we still lack understanding on ho...

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Autores: Dukat, Paulina, Kelly, Julia, Doerr, Stefan H., Edvardsson, Johannes, Hölttä, Teemu S., Lehner, Irene, Lindroth, Anders, Santín, Cristina, Kljun, Natascha
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/376369
Acesso em linha:http://hdl.handle.net/10261/376369
https://api.elsevier.com/content/abstract/scopus_id/85185170909
Access Level:acceso abierto
Palavra-chave:2018 Drought
Eurasia
Forest fire
Nordic pine forest
Tree increment growth
Tree transpiration
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spelling Boreal forest tree growth and sap flow after a low-severity wildfireDukat, PaulinaKelly, JuliaDoerr, Stefan H.Edvardsson, JohannesHölttä, Teemu S.Lehner, IreneLindroth, AndersSantín, CristinaKljun, Natascha2018 DroughtEurasiaForest fireNordic pine forestTree increment growthTree transpirationBoreal forests are exposed to larger and more frequent fires due to climate change, with significant consequences for their carbon and water balances. Low-severity fires (trees charred but surviving) are the most common fire regime in the Eurasian boreal forest, but we still lack understanding on how they impact tree functioning. This study focused on the dynamics of tree transpiration and stem growth of Pinus sylvestris in central Sweden after a large wildfire in 2018. We compared a stand impacted by low-severity fire (LM) with an unburnt stand (UM), over three years following the fire (2020–2022). We found that transpiration was on average lower and more variable within the stand at LM compared to UM. LM also had consistently lower stem growth compared to UM, resulting in larger accumulated growth for the unburnt site in the second to fourth year after the fire. Our results highlight the complex effects of low-severity fire on tree water cycling, with both direct (damage to tree xylem and roots) and indirect fire impacts (due to loss of understory vegetation and changes in soil properties). Trees affected by low-severity fire also exhibited reduced resilience to water shortages. Considering the expected increase in frequency of droughts and forest fires at higher northern latitudes, such indirect fire impacts may put additional pressure on the boreal forest.This research was funded by FORMAS grants 2018-02700 and 2019-00836, and the Crafoord foundation grant 20190763. We thank Jukka Kuivaniemi for his support in accessing and establishing the sites. We are also grateful to Ellinor Delin, Margarida Soares, and Jonas Nilsson for their help conducting the vegetation surveys. The work was done in collaboration with the University of Helsinki in the framework of the project 342930 of the Academy of Finland and with Poznan university of Life Sciences in the framework of the project by General Directorate of the State Forests, Warsaw, Poland (project name: LAS IV 31/2021/B; contract no. EZ.271.3.3.2021).Peer reviewedElsevier BVSwedish Research CouncilCrafoord FoundationDukat, Paulina [0000-0002-5001-2603]Kelly, Julia [0000-0002-7370-1401]Hölttä, Teemu S. [0000-0001-7677-7156]Lehner, Irene [0000-0002-2263-6734]Kljun, Natascha [0000-0001-9650-2184]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/376369https://api.elsevier.com/content/abstract/scopus_id/85185170909reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésThe underlying dataset has been published as supplementary material of the article in the publisher platform at DOI https://doi.org/10.1016/j.agrformet.2024.109899https://doi.org/10.1016/j.agrformet.2024.109899Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3763692026-05-22T06:33:51Z
dc.title.none.fl_str_mv Boreal forest tree growth and sap flow after a low-severity wildfire
title Boreal forest tree growth and sap flow after a low-severity wildfire
spellingShingle Boreal forest tree growth and sap flow after a low-severity wildfire
Dukat, Paulina
2018 Drought
Eurasia
Forest fire
Nordic pine forest
Tree increment growth
Tree transpiration
title_short Boreal forest tree growth and sap flow after a low-severity wildfire
title_full Boreal forest tree growth and sap flow after a low-severity wildfire
title_fullStr Boreal forest tree growth and sap flow after a low-severity wildfire
title_full_unstemmed Boreal forest tree growth and sap flow after a low-severity wildfire
title_sort Boreal forest tree growth and sap flow after a low-severity wildfire
dc.creator.none.fl_str_mv Dukat, Paulina
Kelly, Julia
Doerr, Stefan H.
Edvardsson, Johannes
Hölttä, Teemu S.
Lehner, Irene
Lindroth, Anders
Santín, Cristina
Kljun, Natascha
author Dukat, Paulina
author_facet Dukat, Paulina
Kelly, Julia
Doerr, Stefan H.
Edvardsson, Johannes
Hölttä, Teemu S.
Lehner, Irene
Lindroth, Anders
Santín, Cristina
Kljun, Natascha
author_role author
author2 Kelly, Julia
Doerr, Stefan H.
Edvardsson, Johannes
Hölttä, Teemu S.
Lehner, Irene
Lindroth, Anders
Santín, Cristina
Kljun, Natascha
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Swedish Research Council
Crafoord Foundation
Dukat, Paulina [0000-0002-5001-2603]
Kelly, Julia [0000-0002-7370-1401]
Hölttä, Teemu S. [0000-0001-7677-7156]
Lehner, Irene [0000-0002-2263-6734]
Kljun, Natascha [0000-0001-9650-2184]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv 2018 Drought
Eurasia
Forest fire
Nordic pine forest
Tree increment growth
Tree transpiration
topic 2018 Drought
Eurasia
Forest fire
Nordic pine forest
Tree increment growth
Tree transpiration
description Boreal forests are exposed to larger and more frequent fires due to climate change, with significant consequences for their carbon and water balances. Low-severity fires (trees charred but surviving) are the most common fire regime in the Eurasian boreal forest, but we still lack understanding on how they impact tree functioning. This study focused on the dynamics of tree transpiration and stem growth of Pinus sylvestris in central Sweden after a large wildfire in 2018. We compared a stand impacted by low-severity fire (LM) with an unburnt stand (UM), over three years following the fire (2020–2022). We found that transpiration was on average lower and more variable within the stand at LM compared to UM. LM also had consistently lower stem growth compared to UM, resulting in larger accumulated growth for the unburnt site in the second to fourth year after the fire. Our results highlight the complex effects of low-severity fire on tree water cycling, with both direct (damage to tree xylem and roots) and indirect fire impacts (due to loss of understory vegetation and changes in soil properties). Trees affected by low-severity fire also exhibited reduced resilience to water shortages. Considering the expected increase in frequency of droughts and forest fires at higher northern latitudes, such indirect fire impacts may put additional pressure on the boreal forest.
publishDate 2024
dc.date.none.fl_str_mv 2024
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/376369
https://api.elsevier.com/content/abstract/scopus_id/85185170909
url http://hdl.handle.net/10261/376369
https://api.elsevier.com/content/abstract/scopus_id/85185170909
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI https://doi.org/10.1016/j.agrformet.2024.109899
https://doi.org/10.1016/j.agrformet.2024.109899
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier BV
publisher.none.fl_str_mv Elsevier BV
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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