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Eco-Dynamic Disturbance and Vulnerability Group
 

Department of Geography and Environment
University of Lethbridge, Alberta Canada

Understanding and quantifying climate-mediated changes in boreal and montane  ecosystems using remote sensing and field measurements

About

We use innovative geospatial, hydro-meteorological, and field data to understand resilience and hydro-ecological tipping point mechanisms for ecosystem change in natural and disturbed boreal peatland, forest, and permafrost environments with recent expansion into montane forests and wetlands.

 

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Home: About Me

Current Research Activities

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NSERC Discovery Grant: Fire fuel consumption, severity, and ecosystem response indicators using lidar

This research improves understanding of vegetation structural, topographic and hydrological drivers of forest fire fuel consumption and post-fire vegetation regeneration trajectories within wetland to forest transitional zones that have undergone
recent natural or anthropogenic change using innovative lidar technologies.

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NSERC SPG-Network Grant: Canada Wildfire, remote sensing lead

Development of new lidar and remote sensing-based methods for quantifying pre-fire fuels and post-fire ecosystem regeneration following wildland fire. Remote sensing data collections are validated using field and hydro-ecological approaches. Led by  Dr. M. Flanagan (U. of Alberta) with Dr. L. Daniels (U. of British Columbia), Dr. M. Waddington (McMaster U.), Dr. D. Woolford (Western U.), Dr. Patrick James (U. of Toronto), Dr. D. Martell (U of Toronto).​

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Foothills Research Institute: Spatio-temporal variability of mountain pine beetle outbreak and fire behaviour in Jasper National Park

Two funded projects examine changes in forest stand structure and fuel loads for wildland fire using airborne and terrestrial lidar data and drone-based structure from motion. Structural data are used as inputs into fire behaviour models

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Parks Canada: Assessing rates of recovery within an early post-wildfire successional forest

This project examines important feedback processes between a recently burned lodgepole pine forest, the atmosphere, and the climate system through the long-term recovery of this ecosystem. The site is located in the Akamina Valley, Waterton Lakes National Park. 

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NSERC Alliance: New Insights into Managed Peatland GHG Emissions Across Canada: Quantifying Peatland Fire and Developing Fire Risk Indicators

Research provides insights into GHG emissions by evaluating the impacts of wildfire on managed peatland carbon stocks and GHG fluxes. In this project, we will establish the Peatland Fire Emissions Network - a group of academic, government, and not-for-profit experts on peatlands and wildfire, to improve accounting and inform mitigation of managed peatland GHG emissions from fire in Canada. Co-leads: Sophie Wilkinson (Simon Fraser University), Koreen Millard (Carleton University)

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Innovative Solutions Canada: High Resolution Forest Mapping – arboSense Fuels

​Building and validation of analytical models to predict forest fire fuels from airborne and drone-based lidar data for input into the Canadian Fire Behaviour Prediction System. Partnership with Hatfield Consultants

Home: Projects
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Team Members

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Dr. Laura Chasmer

Associate Professor

Dr. Laura Chasmer has a background in the integration of remote sensing data with ecosystem process measurements and hydro-meteorology. 

Linda Flade

PhD candidate

Thesis: Ecosystem changes due to permafrost thaw and wildfire disturbance across the discontinuous to sporadic permafrost zone of the southwestern Taiga, Northwest Territories, Canada. Co-supervised by C. Hopkinson

Kailyn Nelson

Ph.D candidate

Thesis: Estimating spatial variability of peatland wildfire carbon emissions in Alberta's Boreal Plains

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Emily Jones

PhD student

Thesis: Understanding the impacts of climate change on fire fuels in montane and boreal environments within western Canada using combined remote sensing and field approaches. Co-supervised by C. Hopkinson

Joe Silva

PhD student (starting May 2024)

Looking forward to Joe joining us in May!

Saeid Parsian

M.Sc. Student

Quantifying fire fuels following mountain pine beetle (MPB) outbreaks using remotely piloted aircraft systems (RPAS) and multispectral lidar (ML) data. Co-supervised by C. Hopkinson

Tristan Skretting

MSc candidate

Thesis: Effects of insect disturbance and management strategies on wildfire hazard in Jasper National Park, Alberta, Canada

Amanda Bakalarczyk

MSc student

Thesis: Impacts of peatland drainage and mining on burn severity and carbon losses using bi-temporal lidar

Natalie Krizan

M.Sc. Student (starting May 2024)

Quantifying fire fuels following mountain pine beetle (MPB) outbreaks using remotely piloted aircraft systems (RPAS) and multispectral lidar (ML) data

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Milan Lapres

BSc honours thesis

Thesis: Impact of desiccated fuel character and moisture on fire intensity and behaviour using lab-based thermal IR and drone imagery

Home: Team Members

Past Team Members

Dr. Zhouxin Xi, Post-doctoral fellow now research scientist at Canadian Forest Service

Dr. Edberto Moura-Lima (Emerging Leaders of the America’s Program, Brazil): Examined impacts of oil sands disturbance on wetlands

Jesse Aspinall, MSc: “Quantifying change in carbon pools due to and following the Kenow wildland fire”

Ashlee Mombourquette, MSc (supervised by Dr. Jan Ciborowski, UCalgary): : “Effects of age and salinity on plant community composition and productivity in newly formed wetlands in the Athabasca Oil Sands Region, Alberta”

Humaira Enayetullah, MSc: "“Assessing the cumulative impact of wildfires and seismic line disturbance on peatlands in Northern Alberta”

Emily Jones, MSc “Implications of diminishing wildfire return intervals on structural changes and rates of change in regenerating vegetation within boreal peatlands”

Jeanne Franco, MSc internship student "Examined fuel connectivity in Jasper National Park using drone data"

Thais Abib (Emerging Leaders of the America’s Program, Brazil): Examined proximal influence of seismic lines on wetlands and upland forests

Marcus Merlonghi, BSc honours thesis: “Quantifying fire fuels and biomass in Waterton Lakes National Park, Alberta Canada”

Sam Gerrand, BSc honours thesis: " “Determining the impact of anthropogenic disturbance on fire fuel availability in the Oil Sands Region, Alberta Canada”

Natalie Krizan NSERC USRA: “Quantifying post-fire long and short-term carbon balances in discontinuous permafrost”

Apryl Nish NSERC USRA: “Quantifying the early years of ecosystem regeneration in a post-fire montane valley”

Tristan Skretting NSERC USRA: “Quantifying deviation from fire fuel classes across Canada”

Sam Gerrand NSERC USRA: “Quantifying depth of burn and loss of carbon during wildfire associated with environmental drivers”

Rachelle Shearing NSERC USRA: “Comparing measured and remotely sensed methods for determining leaf area index”


Independent study students

  • Lapres, M. 2023 Applied study: Postfire rates of seedling regeneration

  • Lapres, M. 2023 “Carbon/Biomass Loss Resulting from Harvesting and Prescribed Fire, and Related Fire Intensity”

  • Wandler, B., 2023 “Exploring variability in post-fire peatland ecology”

  • Skretting, T., 2022 “Lidar remote sensing for fire”

  • Charchuk, A., 2022 “Impacts of disturbance on peatlands and peatland regeneration/reclamation using remote sensing”

  • Swail, J. 2021 “Methods and measurements for determining biomass in montane ecosystems”

  • Jones, M. 2021 “Interactions between climate and water runoff in mountain environments”

  • Lartiga, V. 2020 “Review of literature and the use of remote sensing for studying fire”

  • Cuthbertson, N. 2020 “Review of literature and the use of remote sensing for studying wetlands”

  • Enayetullah, H. 2020 “Review of literature and the use of remote sensing for studying wetlands”

  • Woodall, C. 2020 “Fire fuel assessment from field data”

  • Nelson, K. 2020 “Data analysis in R”

  • Ottah, C. 2020 “Remote sensing of wildland fire”

  • Martin, J., 2020 “Remote sensing change detection of discontinuous permafrost land covers”

  • Brunet, J. 2020 “Wetland identification and classification for British Columbia”

  • Muirhead, J. 2020 “Fire fuel assessment using lidar data”

  • Merlonghi, M. 2020 “Assessing climate patterns in northern environments”

  • Gerrand, S. 2019 “Quantifying carbon loss from depth of peat burn following the Kenow Wildfire, Waterton Lakes National Park”

  • Graham, E. 2019 “Physical and vegetative health of riparian zones in relation to surrounding land-uses”

  • Martin, J. 2019 “Landsat, Sentinel and Lidar: Comparing three remote sensing techniques using normalized burn ratios”

  • Shearing, R. 2019 “Quantifying LAI using multiple methods within the Oil Sands Region, Alberta Canada”

  • Mombourquette, A. 2019 “Vegetation Plotting, Water and Toxicity Sampling and Soil Classification at Suncor Base Plant”

  • Smuk, S.S. 2019 “Wetlands in Northern Alberta: Comparative study of total wetlands area and classes between two years”

  • Sanders, A. 2018 “Developing a remote sensing classification based on spatial distribution of bison movement in Banff National Park”

  • Mombourquette, A. 2018 “Climate influences on bog evolution in the Oil Sands Region, Alberta”

  • Adebayo, H. 2018 “Economic and social impacts of wildfire in western Canada”

  • Jones, E. 2018 “Lidar remote sensing data processing and analysis for ecosystem change monitoring”

  • Jakober, L. 2017 “Advanced Remote Sensing of Species using Drones and Lidar”

  • George, M. 2017 “Impacts of Wildfire on Wetlands”

  • Wilson, C. 2017 “Best Management Practices of Aquatic Invasive Species”

  • Ostendorf, T. 2017 “Climate Trends and Area Frequency of Wildfires in Alberta”

  • Olson, C. 2017 “Changes due to Changing Climate in Northern Ecosystems”

  • Paluck, A. 2016 “Modelling impacts of vegetation structure and land surface morphology on permafrost thaw in the NWT”

  • Piet, K. 2015 “Biomass Accounting on Campus”

  • Allred, J. 2014 “Meteorological instrumentation and Application”

  • Lamb, S. 2014 “Classification of Wetlands in Alberta using Remote Sensing Methods”

  • Kutanzi, E. 2014 “Climate patterns over western Canada: Integration with Remote Sensing and GIS Data”

  • Dillon, P. 2014 “Peatland Biodiversity Assessment using Remote Sensing and in situ Methods”

  • Paluck, A. 2014 “Remote Sensing for Environmental Change Detection”

Home: FAQ

Recent Select Publications

[“Supervised individual tree crown detection, segmentation, and forest attribute extraction for terrestrial and airborne laser scanner model calibration using deep neutral networks: algorithms compared” Xi, Z., Hopkinson, C. and Chasmer, L. ISPRS Journal of Photogrammetry and Remote Sensing. Pending

 

“Delineating and reconstructing 3D forest fuel components and volumes with terrestrial laser scanning” Xi, Z., L. Chasmer, C. Hopkinson. Remote Sensing. Remote Sensing | Free Full-Text | Delineating and Reconstructing 3D Forest Fuel Components and Volumes with Terrestrial Laser Scanning (mdpi.com)

 

“Impacts of seismic line disturbance on post-fire regeneration in a space-for-time boreal peatland fire chronosequence using multispectral lidar” Enayetullah, H., L. Chasmer, C. Hopkinson, D. Thompson, D. Cobbaert, Forests. Atmosphere | Free Full-Text | Identifying Conifer Tree vs. Deciduous Shrub and Tree Regeneration Trajectories in a Space-for-Time Boreal Peatland Fire Chronosequence Using Multispectral Lidar (mdpi.com)

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“Lidar ground classification parameterization for boreal elevation and depth of burn assessment” Nelson, K., L. Chasmer, C. Hopkinson, 2022, Remote Sensing Special Issue on Fire. 14(20): 5880. Remote Sensing | Free Full-Text | Quantifying Lidar Elevation Accuracy: Parameterization and Wavelength Selection for Optimal Ground Classifications Based on Time since Fire/Disturbance (mdpi.com)

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“Identifying conifer tree vs. deciduous shrub and tree regeneration trajectories in a space-for-time boreal peatland fire chronosequence using multi-spectral lidar” Enayetullah, H., Chasmer, L., Hopkinson, C., Thompson, D., and Cobbaert, D., 2022. Atmosphere Special Issue on Climate-Vegetation Interactions in Northern High Latitudes. 13(1):12 Atmosphere | Free Full-Text | Identifying Conifer Tree vs. Deciduous Shrub and Tree Regeneration Trajectories in a Space-for-Time Boreal Peatland Fire Chronosequence Using Multispectral Lidar (mdpi.com)

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“Hydro-ecological impacts of shortening fire return intervals on regenerating Boreal peatlands and transition zones using integrated in situ sampling and lidar approaches”  Jones, E., Chasmer, L., Devito, K., Rood, S., and Hopkinson, C., 2022  Ecohydrology, https://doi.org/10.1002/eco.2403

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“The implications of permafrost thaw and land cover change on snow water equivalent accumulation, melt and runoff in discontinuous permafrost peatlands” Connon, R., Chasmer, L., Haughton, E., Helbig, M., Hopkinson, C., Sonnentag, P., Quinton, W. 2021. Hydrological Processes. 35(9): e14363. DOI: 10.1002/hyp.14363

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“Partitioning carbon losses from fire combustion in a montane valley, Alberta Canada”. Gerrand, S., Aspinall, J., Jensen, T., Hopkinson, C., A. Collingwood and Chasmer, L. 2021. Forest Ecology and Management. 496:119435. https://doi.org/10.1016/j.foreco.2021.119435

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"Reduced wetland connectivity and increased shrubification with proximity to oil sands development” Chasmer, L., Lima-Moura, E., Mahoney, C., Hopkinson, C., J. Montgomery, and Cobbaert, D. 2021. Science of the Total Environment. 780: 146638. https://doi.org/10.1016/j.scitotenv.2021.146638

 

Plant component aboveground biomass of Boreal shrubs and short stature trees in northwestern Canada” Flade, L., Hopkinson, C., and Chasmer, L. 2021. Forests. 12(2), 234; https://doi.org/10.3390/f12020234

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Understanding the vulnerability of northern peatlands to permafrost thaw at scales relevant to community adaptation planning”. Gibson, C., Cottenie, K., Gingras-Hill, T., Baltzer, J.L., Chasmer, L., Turetsky, M. R. 2021. Environmental Research Letters ERL-109956

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“Peatland-wildfire interactions: A review of wildfire feedbacks in Canadian boreal peatlands” Nelson, K., D. Thompson, C. Hopkinson, R. Petrone, L. Chasmer. 2021. Science of the Total Environment. 769: 145212 

 

Biomass allometric equations for small stature shrub and tree species in boreal ecosystems of northwestern Canada” Flade, L., C. Hopkinson, Chasmer, L. 2020. Forests. 11, 1207; doi:10.3390/f11111207

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Remote Sensing of Boreal Wetlands 1: Data use for policy and management.” Chasmer, L., D. Cobbaert, K. Millard, D. L. Peters, K. Devito, B. Brisco, C. Hopkinson, C. Mahoney, M. Merchant, J. Montgomery, K. Nelson, O. Niemann. 2020. Remote Sensing Special Issue, Wetland Change. 12(8):1320. 

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“Remote Sensing of Boreal Wetlands 2: Remote sensing methods for evaluating boreal wetland ecosystem state and drivers of change.” Chasmer, L., C. Mahoney, K. Millard, K. Nelson, C. Hopkinson, M. Merchant, D. L. Peters, O. Niemann, J. Montgomery, B. Brisco, K. Devito, D. Cobbaert. 2020. Remote Sensing Special Issue, Wetland Change. 12(8):1320. 

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“Promoting the use of lidar systems in forest ecosystem research by non-experts” Beland, M., S. Phinn, A. Antonarakis, B. Sparrow, A. Strahler, L. Chasmer, D. Harding, G. Parker, 2019. Forest Ecology and Management. 450:117484.

 

“A synthesis of three decades of eco-hydrological research at Scotty Creek, NWT Canada” Quinton, W., A. Berg, M. Braverman, O. Carpino, L. Chasmer, R. Connon, J. Craig, E. Devoie, M. Hayashi, K. Haynes, D. Olefeldt, A. Pietroniro, F. Rezanezhad, R. Schincariol and O, Sonnentag. 2019. Hydrology and Earth System Sciences. 23, 2015-2039.

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“SAR and lidar data fusion approaches to boreal wetland ecosystem monitoring” Montgomery, J., B. Brisco, C. Hopkinson, L. Chasmer, K. Devito, and D. Cobbaert, 2019. Remote Sensing. 11(2):161

 

“Seismic line impacts on proximal forest and wetland environments in Alberta” Abib, T. H., L. Chasmer, C. Hopkinson, C. Mahoney, L. C. Rodriguez, E. 2019. Science of the Total Environment. 658(25):1601-1613. 

 

“Filtering stems and branches from terrestrial laser scanning point clouds using deep 3-D fully convolutional networks” Xi, Z., C. Hopkinson, L. Chasmer, 2018. Remote Sensing. 10(8): 1215.

 

“Wildfire as a major driver of recent permafrost thaw in boreal peatlands” Gibson, C. M., Chasmer, L., Thompson, D., Quinton, W., Flannigan, M., and Olefeldt, D., 2018. Nature Communications.

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“Monitoring ecosystem reclamation recovery using optical remote sensing: Comparison with field measurements and eddy covariance” Chasmer, L., T. Baker, S. K. Carey, J. Straker, S. Strilesky, and R. Petrone, 2018. Science of the Total Environment. 642:436-446.

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“Remote sensing of ecosystem trajectories as a proxy-indicator for watershed water balance” Chasmer, L., C. Hopkinson, R. Petrone, K. Devito, 2018. Ecohydrology. E1987. https://doi.org/10.1002/eco.1987.

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“Using multi-temporal and multi-spectral airborne lidar to assess depth of peat loss and correspondence with a new active normalized burn ratio for wildfires” Chasmer, L., C. Hopkinson, R. Petrone, M. Sitar, 2017. Geophysical Research Letters. 44,11,851-11,859; 2017GL075488. 

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“Landscape controls of long-term runoff in sub-humid heterogeneous Boreal catchments” Devito, K.J., K. J. Hokanson, P. Moore, A. Anderson, L. Chasmer, C. Hopkinson, N. Kettridge, C. A. Mendoza, D. L. Peters, R. Petrone, U. Silins, B. Smerdon, J. Morissette, J. M. Waddington, 2017. Hydrological Processes. 31(15):2737-2751. 

 

“Direct and indirect climate change effects on carbon dioxide fluxes in a thawing boreal forest-wetland landscape” Helbig, M., L. Chasmer, A. Desai, N. Kljun, W. Quinton and O. Sonnentag, 2017. Global Change Biology. 23: 3231–3248. doi:10.1111/gcb.13638.

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“Threshold loss of discontinuous permafrost and landscape evolution” Chasmer, L. and C. Hopkinson, 2016. Global Change Biology. 23(7):2672-2686. Doi:10.1111/gcb.13537.

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“The positive net radiative greenhouse gas forcing of increasing methane emissions from a thawing boreal forest-wetland landscape” Helbig, M., L. Chasmer, N. Kljun, W. Quinton, C. Treat, and O. Sonnentag, 2017. Global Change Biology. 23(6):2413-2427 Doi:10.1111/gcb.13520. 

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“The contributions of C-band SAR multipolarization data and polarimetric decompositions to subarctic boreal peatland mapping” Merchant, M., J. Adams, A. Berg, J. Baltzer, W. Quinton and L. Chasmer, 2016. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. 10(4):1467-1482.

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