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How Does Fire Exclusion Affect the Belowground Biomass of Tropical Open Ecosystems?

hal.structure.identifierUniversidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University [UNESP]
hal.structure.identifierYale University [New Haven]
dc.contributor.authorTEIXEIRA, Juliana
hal.structure.identifierUniversity of Oklahoma [OU]
dc.contributor.authorSOUZA, Lara
hal.structure.identifierTechnische Universität Munchen - Technical University Munich - Université Technique de Munich [TUM]
dc.contributor.authorBOMBO, Aline
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorLE STRADIC, Soizig
dc.date.accessioned2025-04-03T02:01:59Z
dc.date.available2025-04-03T02:01:59Z
dc.date.issued2025-03-18
dc.identifier.issn1100-9233
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/205904
dc.description.abstractEnAim Belowground biomass, including roots and belowground bud‐bearing organs, is crucial in tropical open ecosystems, particularly during post‐fire regeneration. However, we still do not understand how variation in fire regime modulates the allocation of biomass in these belowground parts. In two distinct fire regimes, we investigated aboveground and belowground biomass, as well as the distribution of biomass and the composition of bud‐bearing belowground organs in open tropical ecosystems. Location Five tropical open ecosystems in Brazil (from northern to southeast Brazil). Methods We assessed above‐ and belowground plant biomass across 100 plots (10 plots for each of the two treatment conditions i.e. frequently burnt and fire excluded, and at five sites in total). We sorted out biomass as live aboveground, belowground bud‐bearing organs, coarse (> 2 mm) and fine roots (< 2 mm). Bud‐bearing belowground organs were classified into morphological categories (e.g., xylopodia, woody rhizome and fleshy rhizome). Results Fire‐excluded areas had a lower root‐to‐shoot ratio and lower total belowground‐to‐aboveground biomass allocation than areas frequently burnt. The total belowground biomass, as well as fine and coarse root biomass and belowground bud‐bearing organ biomass, remained unchanged with fire exclusion. The composition of belowground bud‐bearing organs changed towards organs with lateral spread, such as woody and fleshy rhizomes, when fire was excluded. Conclusions More than 10 years of fire exclusion did not affect the total belowground biomass but changed the composition of bud‐bearing belowground organs in tropical open ecosystems. Even after 12 years of fire exclusion, bud‐bearing belowground organs were still present in the community, ensuring resilience to fire even if they were not burned regularly.
dc.language.isoen
dc.publisherWiley
dc.subject.enbelowground allocation
dc.subject.enbelowground organs
dc.subject.enbiomass
dc.subject.enCerrado
dc.subject.enfire
dc.subject.entropical open ecosystems
dc.title.enHow Does Fire Exclusion Affect the Belowground Biomass of Tropical Open Ecosystems?
dc.typeArticle de revue
dc.identifier.doi10.1111/jvs.70027
dc.subject.halSciences de l'environnement
bordeaux.journalJournal of Vegetation Science
bordeaux.pagee70027
bordeaux.volume36
bordeaux.hal.laboratoriesBioGeCo (Biodiversité Gènes & Communautés) - UMR 1202*
bordeaux.issue2
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-05016849
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-05016849v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Vegetation%20Science&rft.date=2025-03-18&rft.volume=36&rft.issue=2&rft.spage=e70027&rft.epage=e70027&rft.eissn=1100-9233&rft.issn=1100-9233&rft.au=TEIXEIRA,%20Juliana&SOUZA,%20Lara&BOMBO,%20Aline&LE%20STRADIC,%20Soizig&rft.genre=article


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