Name
Common Peatland Mounding Techniques Under Fire: Using Combustion Modelling to Evaluate Seismic Line Restoration’s Resilience to Wildfire
Date & Time
Monday, May 25, 2026, 11:00 AM - 11:15 AM
Description
Peatlands on Canada’s Western Boreal Plain have been bisected by a dense network of seismic lines created during exploration for oil and gas. Creation of seismic lines involves removal of trees and shrubs, and frequently results in peat compaction and increases in soil moisture content. Combined with the loss of natural peatland microtopography, these conditions often slow or inhibit tree and shrub re-establishment on abandoned seismic lines. The resulting open sightlines have been linked to increased predation between wolves and caribou that have contributed to ongoing declines in caribou population sizes. As such, mechanical mounding treatments are frequently applied on seismic lines to create elevated dry microsites that may promote tree and shrub establishment. However, it remains unclear whether the mounds created on seismic lines in peatlands will be resilient to natural disturbances including wildfire. Accordingly, we put several common and novel restoration techniques to the test through application of a numerical combustion model. The model was parameterized using peat cores collected from three treated seismic lines located in peatlands representing a continuum from poor to rich fen. Inverted inline mounds were predicted to have poor resilience against ignition during wildfire, and may be completely lost to smouldering. Upright inline mounds and transferred hummocks were predicted to be far more resilient to ignition and smouldering. Given the increasing frequency and severity of wildfires under a changing climate, we discuss the important role of the Upright Mounding and Hummock Transfer Techniques in preventing restoration efforts from going up in smoke.
Location Name
DSU Council Chambers
Full Address
Dalhousie University
Halifax NS
Canada
Halifax NS
Canada
Session Type
Oral Presentation
Abstract ID
363
Speaker Organization
University of Calgary
Session Name
B2 (1 of 3)
Co-authors
Emma Tutt (co-presenter; Simon Fraser University)
Bin Xu (Northern Alberta Institute of Technology)
Courtney Miller (Alberta-Pacific Forest Industries Inc.)
Samantha Shapira (Alberta-Pacific Forest Industries Inc.)
Sophie Wilkinson (Simon Fraser University)
Presenting Author
Murdoch McKinnon (University of Calgary)