Charcoal dispersion and deposition in boreal lakes from 3 years of monitoring: Differences between local and regional fires

Oris, France, Ali, Adam A., Asselin, Hugo, Paradis, Laure, Bergeron, Yves et Finsinger, Walter (2014). Charcoal dispersion and deposition in boreal lakes from 3 years of monitoring: Differences between local and regional fires. Geophysical Research Letters , 41 (19). pp. 6743-6752. doi:10.1002/2014GL060984 Repéré dans Depositum à https://depositum.uqat.ca/id/eprint/949

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Résumé

To evaluate the influence of long‐distance transport of charcoal particles on the detection of local wildfires from lake sediment sequences, we tracked three consecutive years of charcoal deposition into traps set within seven boreal lakes in northeastern Canada. Peaks in macroscopic charcoal accumulation (>150 µm) were linked to both local (inside the watershed) and regional wildfires. However, regional fires were characterized by higher proportions of small particles (<0.1 mm2) in charcoal assemblages. We conclude that the analysis of particle size distribution is useful to discriminate “true” local fires from regional wildfires.

Type de document:	Article
Informations complémentaires:	Pour voir les permissions d'utilisation : http://sherpa.ac.uk/romeo/search.php?issn=0094-8276
Mots-clés libres:	charcoal analysis; charcoal size distribution; forest fire; fire history boreal
Divisions:	Forêts
Date de dépôt:	26 mars 2020 19:08
Dernière modification:	26 mars 2020 19:08
URI:	https://depositum.uqat.ca/id/eprint/949

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