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Forests 2016, 7(10), 246; doi:10.3390/f7100246

Burning Potential of Fire Refuges in the Boreal Mixedwood Forest

1
Chaire Industrielle CRSNG-UQAT-UQÀM en Aménagement Forestier Durable, Université du Québec en Abitibi-Témiscamingue, 445 Boulevard de l’Université, Rouyn-Noranda, QC J9X 5E4, Canada
2
Institut des Sciences de l’Evolution de Montpellier, ISEM UMR 5554 CNRS-IRD-Université Montpellier-EPHE, Avenue Eugène Bataillon, Montpellier 34095, Cedex 5, France
3
Ecole Pratique des Hautes Etudes, EPHE, PSL Research University, 4-14 rue Ferrus, Paris 75014, France
4
Centre D’étude de la Forêt, Université du Québec à Montréal, CP 8888, succ. Centre-ville, Montréal, QC H3C 3P8, Canada
*
Author to whom correspondence should be addressed.
Academic Editor: Timothy A. Martin
Received: 8 July 2016 / Revised: 30 September 2016 / Accepted: 8 October 2016 / Published: 21 October 2016
View Full-Text   |   Download PDF [2820 KB, uploaded 21 October 2016]   |  

Abstract

In boreal ecosystems, wildfire severity (i.e., the extent of fire-related tree mortality) is affected by environmental conditions and fire intensity. A burned area usually includes tree patches that partially or entirely escaped fire. There are two types of post-fire residual patches: (1) patches that only escaped the last fire; and (2) patches with lower fire susceptibility, also called fire refuges, that escaped several consecutive fires, likely due to particular site characteristics. The main objective of this study was to test if particular environmental conditions and stand characteristics could explain the presence of fire refuges in the mixedwood boreal forest. The FlamMap3 fire behavior model running at the landscape scale was used on the present-day Lake Duparquet forest mosaic and on four other experimental scenarios. FlamMap3 was first calibrated using BehavePlus and realistic rates of fire spread obtained from the Canadian Fire Behavior Prediction system. The results, based on thousands of runs, exclude the effects of firebreaks, topography, fuel type, and microtopography to explain the presence of fire refuges, but rather highlight the important role of moisture conditions in the fuel beds. Moist conditions are likely attributed to former small depressions having been filled with organic matter rather than present-day variations in ground surface topography. View Full-Text
Keywords: fire refuges; fire modeling; fire susceptibility; FlamMap3; fuel moisture fire refuges; fire modeling; fire susceptibility; FlamMap3; fuel moisture
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MDPI and ACS Style

Ouarmim, S.; Paradis, L.; Asselin, H.; Bergeron, Y.; Ali, A.A.; Hély, C. Burning Potential of Fire Refuges in the Boreal Mixedwood Forest. Forests 2016, 7, 246.

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