The sedimentary and remote-sensing reflection of biomass burning in Europe

Adolf, Carole; Wunderle, Stefan; Colombaroli, Daniele; Weber, Helga; Gobet, Erika; Heiri, Oliver; van Leeuwen, Jacqueline F. N.; Bigler, Christian; Connor, Simon E.; Gałka, Mariusz; La Mantia, Tommaso; Makhortykh, Sergey; Svitavská-Svobodová, Helena; Vannière, Boris; Tinner, Willy (2018). The sedimentary and remote-sensing reflection of biomass burning in Europe. Global Ecology and Biogeography, 27(2), pp. 199-212. Wiley-Blackwell 10.1111/geb.12682

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Aim We provide the first European-scale geospatial training set relating the charcoal signal in surface lake sediments to fire parameters (number, intensity and area) recorded by satellite moderate resolution imaging spectroradiometer (MODIS) sensors. Our calibration is intended for quantitative reconstructions of key fire-regime parameters by using sediment sequences of microscopic (MIC from pollen slides, particles 10–500 µm) and macroscopic charcoal (MAC from sieves, particles > 100 µm). Location North–south and east–west transects across Europe, covering the mediterranean, temperate, alpine, boreal and steppe biomes. Time period Lake sediments and MODIS active fire and burned area products were collected for the years 2012–2015. Methods Cylinder sediment traps were installed in lakes to annually collect charcoal particles in sediments. We quantitatively assessed the relationships between MIC and MAC influx (particles/cm2/year) and the MODIS-derived products to identify source areas of charcoal and the extent to which lake-sediment charcoal is linked to fire parameters across the continent. Results Source area of sedimentary charcoal was estimated to a 40-km radius around sites for both MIC and MAC particles. Fires occurred in grasslands and in forests, with grass morphotypes of MAC accurately reflecting the burned fuel-type. Despite the lack of local fires around the sites, MAC influx levels reached those reported for local fires. Both MIC and MAC showed strong and highly significant relationships with the MODIS-derived fire parameters, as well as with climatic variation along a latitudinal temperature gradient. Main conclusions MIC and MAC are suited to quantitatively reconstructing fire number and fire intensity on a regional scale. However, burned area may only be estimated using MAC. Local fires may be identified by using several lines of evidence, e.g. analysis of large particles (> 600 µm), magnetic susceptibility and sedimentological data. Our results offer new insights and applications to quantitatively reconstruct fires and to interpret available sedimentary charcoal records.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Geography > Physical Geography > Unit Remote Sensing
10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR)
08 Faculty of Science > Institute of Geography
08 Faculty of Science > Institute of Geography > Physical Geography
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) > Palaeoecology
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS)

UniBE Contributor:

Adolf, Carole; Wunderle, Stefan; Colombaroli, Daniele; Weber, Helga; Gobet, Erika; Heiri, Oliver; van Leeuwen, Jacqueline and Tinner, Willy

Subjects:

900 History > 910 Geography & travel
500 Science > 580 Plants (Botany)

ISSN:

1466-822X

Publisher:

Wiley-Blackwell

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

22 Dec 2017 10:23

Last Modified:

22 Jan 2018 10:23

Publisher DOI:

10.1111/geb.12682

Uncontrolled Keywords:

calibration in space; fire ecology; fire regime; lake-sediment charcoal; MODIS; palaeoecology

BORIS DOI:

10.7892/boris.108055

URI:

https://boris.unibe.ch/id/eprint/108055

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