Lacustrine charcoal peaks provide an accurate record of surface wildfires in a North European boreal forest
| Autor: | Adam A. Ali, Laure Paradis, Igor Drobyshev, Alexander Kryshen, Samuel Alleaume, Benoît Brossier, Christelle Hély, Gwenaël Magne, Emmanuel Gandouin |
|---|---|
| Přispěvatelé: | Institut des Sciences de l'Evolution de Montpellier (UMR ISEM), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Institut de recherche pour le développement [IRD] : UR226-Centre National de la Recherche Scientifique (CNRS), Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE), Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement [IRD] : UMR237-Centre National de la Recherche Scientifique (CNRS), Swedish University of Agricultural Sciences (SLU), École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL), Territoires, Environnement, Télédétection et Information Spatiale (UMR TETIS), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-AgroParisTech-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École pratique des hautes études (EPHE), École pratique des hautes études (EPHE), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École pratique des hautes études (EPHE)-Université de Montpellier (UM)-Institut de recherche pour le développement [IRD] : UR226-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut de recherche pour le développement [IRD] : UMR237-Aix Marseille Université (AMU)-Avignon Université (AU), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
010506 paleontology
Archeology 010504 meteorology & atmospheric sciences [SDE.MCG]Environmental Sciences/Global Changes surface fires Context (language use) 01 natural sciences Dendrochronology tree-ring records Charcoal Fire history 0105 earth and related environmental sciences Earth-Surface Processes Global and Planetary Change Ecology Taiga dendrochronology Paleontology Sediment Sampling (statistics) 15. Life on land lacustrine sediments late Holocene Boreal visual_art visual_art.visual_art_medium Environmental science dated fire scar Russian Karelia Physical geography [SDE.BE]Environmental Sciences/Biodiversity and Ecology natural disturbance regimes |
| Zdroj: | The Holocene The Holocene, 2020, 30 (3), pp.380-388. ⟨10.1177/0959683619887420⟩ The Holocene, London: Sage, 2020, 30 (3), pp.380-388. ⟨10.1177/0959683619887420⟩ The holocene The holocene, London: Sage, 2019, 30 (3), pp.380-388. ⟨10.1177/0959683619887420⟩ |
| ISSN: | 0959-6836 1477-0911 |
| Popis: | We evaluated the skills of different palaeofire reconstruction techniques to reconstruct the fire history of a boreal landscape (Russian Karelia) affected by surface fires. The analysis of dated lacustrine sediments from two nearby lakes was compared with independent dendrochronological dating of fire scars, methods which have rarely been used in context of surface fires. We used two sediment sub-sampling volumes (1 and 3.5 cm3, wet volumes) and three methods of calculating the Charcoal Accumulation Rate to reconstruct fire histories: CHAR number, charcoal surface area and estimated charcoal volume. The results show that palaeofire reconstructions obtained with fossil charcoal data from lake sediments and dendrochronology are similar and complementary. Dendrochronological reconstruction of fire scars established 12 fire dates over the past 500 years, and paleo-data from lake sediments identified between 7 and 13 fire events. Several ‘false fire events’ were also recorded in the charcoal chronologies, likely because of errors associated with the estimation of the sediment accumulation rate in the unconsolidated part of the sediment. The number of replicates, that is, number of sub-samples and lakes analyzed, had an effect on the number of identified fire events, whereas no effect was seen in the variation in the analyzed sediment volume or the choice of the charcoal-based metric. Whenever possible, we suggest the use of the dendrochronological data as an independent control for the calibration of charcoal peak series, which helps provide more realistic millennia-long reconstruction of past fire activity. We also argue for the use of 1 cm3sample volume, a sampling protocol involving sampling of more than one lake, and sufficient number of intra-sample replicates to achieve skilful reconstructions of past fire activity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|