Biomass-modulated fire dynamics during the last glacial-interglacial transition at the central pyrenees (Spain)

Understanding long-term fire ecology is essential for current day interpretation of ecosystem fire responses. However palaeoecology of fire is still poorly understood, especially at high-altitude mountain environments, despite the fact that these are fire-sensitive ecosystems and their resilience mi...

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Autores: Gil-Romera, Graciela, González-Sampériz, Penélope, Lasheras Álvarez, Laura, Sevilla-Callejo, Miguel, Moreno Caballud, Ana, Valero-Garcés, Blas L., López Merino, Lourdes, Carrión, José S., Pérez-Sanz, Ana, Aranbarri, J., García-Prieto, E.
Tipo de recurso: artículo
Fecha de publicación:2014
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/96745
Acceso en línea:http://hdl.handle.net/10261/96745
Access Level:acceso abierto
Palabra clave:Lateglacial
Quaternary
Palaeoecology
Historical biogeography
Iberian Peninsula
Fire history
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spelling Biomass-modulated fire dynamics during the last glacial-interglacial transition at the central pyrenees (Spain)Gil-Romera, GracielaGonzález-Sampériz, PenélopeLasheras Álvarez, LauraSevilla-Callejo, MiguelMoreno Caballud, AnaValero-Garcés, Blas L.López Merino, LourdesCarrión, José S.Pérez-Sanz, AnaAranbarri, J.García-Prieto, E.LateglacialQuaternaryPalaeoecologyHistorical biogeographyIberian PeninsulaFire historyUnderstanding long-term fire ecology is essential for current day interpretation of ecosystem fire responses. However palaeoecology of fire is still poorly understood, especially at high-altitude mountain environments, despite the fact that these are fire-sensitive ecosystems and their resilience might be affected by changing fire regimes. We reconstruct wildfire occurrence since the Lateglacial (14.7. cal. ka BP) to the Mid-Holocene (6. cal. ka BP) and investigate the climate-fuel-fire relationships in a sedimentary sequence located at the treeline in the Central Spanish Pyrenees. Pollen, macro- and micro-charcoal were analysed for the identification of fire events (FE) in order to detect vegetation post-fire response and to define biomass-fire interactions. mean fire intervals (mfi) reduced since the Lateglacial, peaking at 9-7.7. cal. ka BP while from 7.7 to 6. cal. ka BP no fire is recorded. We hypothesise that Early Holocene maximum summer insolation, as climate forcing, and mesophyte forest expansion, as a fuel-creating factor, were responsible for accelerating fire occurrence in the Central Pyrenees treeline. We also found that fire had long-lasting negative effects on most of the treeline plant communities and that forest contraction from 7.7. cal. ka BP is likely linked to the ecosystem's threshold response to high fire frequencies. © 2014 Elsevier B.V.This research has been funded by the projects DINAMO (CGL2009-07992) (funding EGPF — grant ref. BES-2010-038593 and MSC), DINAMO2 (CGL2012-33063), ARAFIRE (2012 GA LC 064), GRACCIE-CONSOLIDER (CSD2007-00067). GGR was funded by the Juan de la Cierva Program (grant ref. JCI2009-04345) and JAE-Doc CSIC Program, LLM was supported by a postdoctoral MINT fellowship funded by the Institute for the Environment (Brunel University), AMC is a Ramón y Cajal fellow (ref: RYC-2008-02431), APS holds a grant funded by the Aragon Government (ref. 17030G/5423/480072/14003) and JAE holds a grant funded by the Basque Country Government (BFI-2010-5). We are indebted to Beatriz Bueno and Aida Adsuar for sampling processing and laboratory analyses and to César Morales del Molino for productive discussions on the ideas of this paper. We are grateful to Steven M. Holland for providing the free software to calculate rarefaction (Analytic Rarefaction), which is available at http://strata.uga.edu/software/.Peer ReviewedElsevier2014201420142014info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/96745reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.palaeo.2014.03.015info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/967452026-05-22T06:33:51Z
dc.title.none.fl_str_mv Biomass-modulated fire dynamics during the last glacial-interglacial transition at the central pyrenees (Spain)
title Biomass-modulated fire dynamics during the last glacial-interglacial transition at the central pyrenees (Spain)
spellingShingle Biomass-modulated fire dynamics during the last glacial-interglacial transition at the central pyrenees (Spain)
Gil-Romera, Graciela
Lateglacial
Quaternary
Palaeoecology
Historical biogeography
Iberian Peninsula
Fire history
title_short Biomass-modulated fire dynamics during the last glacial-interglacial transition at the central pyrenees (Spain)
title_full Biomass-modulated fire dynamics during the last glacial-interglacial transition at the central pyrenees (Spain)
title_fullStr Biomass-modulated fire dynamics during the last glacial-interglacial transition at the central pyrenees (Spain)
title_full_unstemmed Biomass-modulated fire dynamics during the last glacial-interglacial transition at the central pyrenees (Spain)
title_sort Biomass-modulated fire dynamics during the last glacial-interglacial transition at the central pyrenees (Spain)
dc.creator.none.fl_str_mv Gil-Romera, Graciela
González-Sampériz, Penélope
Lasheras Álvarez, Laura
Sevilla-Callejo, Miguel
Moreno Caballud, Ana
Valero-Garcés, Blas L.
López Merino, Lourdes
Carrión, José S.
Pérez-Sanz, Ana
Aranbarri, J.
García-Prieto, E.
author Gil-Romera, Graciela
author_facet Gil-Romera, Graciela
González-Sampériz, Penélope
Lasheras Álvarez, Laura
Sevilla-Callejo, Miguel
Moreno Caballud, Ana
Valero-Garcés, Blas L.
López Merino, Lourdes
Carrión, José S.
Pérez-Sanz, Ana
Aranbarri, J.
García-Prieto, E.
author_role author
author2 González-Sampériz, Penélope
Lasheras Álvarez, Laura
Sevilla-Callejo, Miguel
Moreno Caballud, Ana
Valero-Garcés, Blas L.
López Merino, Lourdes
Carrión, José S.
Pérez-Sanz, Ana
Aranbarri, J.
García-Prieto, E.
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Lateglacial
Quaternary
Palaeoecology
Historical biogeography
Iberian Peninsula
Fire history
topic Lateglacial
Quaternary
Palaeoecology
Historical biogeography
Iberian Peninsula
Fire history
description Understanding long-term fire ecology is essential for current day interpretation of ecosystem fire responses. However palaeoecology of fire is still poorly understood, especially at high-altitude mountain environments, despite the fact that these are fire-sensitive ecosystems and their resilience might be affected by changing fire regimes. We reconstruct wildfire occurrence since the Lateglacial (14.7. cal. ka BP) to the Mid-Holocene (6. cal. ka BP) and investigate the climate-fuel-fire relationships in a sedimentary sequence located at the treeline in the Central Spanish Pyrenees. Pollen, macro- and micro-charcoal were analysed for the identification of fire events (FE) in order to detect vegetation post-fire response and to define biomass-fire interactions. mean fire intervals (mfi) reduced since the Lateglacial, peaking at 9-7.7. cal. ka BP while from 7.7 to 6. cal. ka BP no fire is recorded. We hypothesise that Early Holocene maximum summer insolation, as climate forcing, and mesophyte forest expansion, as a fuel-creating factor, were responsible for accelerating fire occurrence in the Central Pyrenees treeline. We also found that fire had long-lasting negative effects on most of the treeline plant communities and that forest contraction from 7.7. cal. ka BP is likely linked to the ecosystem's threshold response to high fire frequencies. © 2014 Elsevier B.V.
publishDate 2014
dc.date.none.fl_str_mv 2014
2014
2014
2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/96745
url http://hdl.handle.net/10261/96745
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.palaeo.2014.03.015
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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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