J M Waddington
Biographic Data
| ID | 6822474 |
|---|---|
| NAME | J M Waddington |
| GIVEN NAMES | J M |
| FAMILY NAME | Waddington |
| SIGNATURE | WADDINGTON J M |
| AFFILIATIONS | McMaster University |
| ORCID | 0000-0002-0317-7894 |
| VERIFIED | Yes |
| TOTAL WORKS | 9 |
| TOTAL CITATIONS | 1 |
| AUTHOR COUNT | 9 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1990 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 1 |
Shallow peatlands as sentinels of climate change
Globally-significant arsenic release by wildfires in a mining-impacted boreal landscape
Metal mining and smelting activities are one of the largest anthropogenic sources of arsenic pollution to the environment, with pervasive consequences to human and environmental health. Several decades of metal processing activities near Yellowknife, NT, Canada have resulted in widespread accumulation of arsenic in biomass, soils, and sediments, exceeding environmental and human health limits. The landscape surrounding Yellowknife is frequently d…
Peat fires and the unknown risk of legacy metal and metalloid pollution
Introduction. Peatlands have persisted for millennia, acting as\nglobally-important sinks of atmospheric carbon\ndioxide (Yu 2012) and regionally-important role\nsinks of pollutants, such as lead, arsenic, or mercury (toxic metals and metalloids, TMMs) (Bindler\n2006). The role peatlands play in atmospheric carbon sequestration often overshadows their role in\nstoring pollutants despite, for example, peat mercury\naccumulation rates increasing 60…
Shallow peat is most vulnerable to high peat burn severity during wildfire
Peatlands typically act as carbon sinks, however, increasing wildfire severity and annual area burned may challenge this carbon sink status. Whilst most peat resistance to wildfire and drought research is based on deep peatlands that rarely lose their water table below the peat profile, shallow peatlands and peat deposits may be most vulnerable to high peat burn severity and extensive carbon loss. To examine the role of pre-fire peat depth on pea…
The influence of system heterogeneity on peat-surface temperature dynamics
Temperatures at the soil–atmosphere interface influence ecosystem function by driving nonlinear terrestrial biogeochemical, ecohydrological, and micrometeorological processes. Whilst climate, soil and vegetation controls on spatially average ecosystem temperatures are recognised, how interacting and heterogeneous ecosystem layers create spatio-temporal complex thermal ecosystems has not been determined. Such thermal hot spots and hot moments may …
The biophysical climate mitigation potential of boreal peatlands during the growing season
Peatlands and forests cover large areas of the boreal biome and are critical for global climate regulation. They also regulate regional climate through heat and water vapour exchange with the atmosphere. Understanding how land-atmosphere interactions in peatlands differ from forests may therefore be crucial for modelling boreal climate system dynamics and for assessing climate benefits of peatland conservation and restoration. To assess the bioph…
Did enhanced afforestation cause high severity peat burn in the Fort McMurray Horse River wildfire
Climate change mediated drying of boreal peatlands is expected to enhance peatland afforestation and wildfire vulnerability. The water table depth–afforestation feedback represents a positive feedback that can enhance peat drying and consolidation and thereby increase peat burn severity; exacerbating the challenges and costs of wildfire suppression efforts and potentially shifting the peatland to a persistent source of atmospheric carbon. To addr…
Reducing the Carbon Footprint of Canadian Peat Extraction and Restoration
The Canadian horticultural peat industry generates carbon emissions through various methods of peat extraction, processing, and land-use changes. This study provides a carbon emissions analysis comparing the traditional vacuum harvest (VH) and block-cut (BC) extraction techniques to a new acrotelm transplant (AT) method that restores natural peatland function by preserving and replacing the surface layer vegetation as part of the extraction proce…
Effects of Beaver Dams on Subarctic Wetland Hydrology
Beaver dams are ubiquitous in subarctic wetlands, where runoff in the flat terrain is highly prone to changes as the stream courses are modified by beaver activities. Depending on the state of preservation, stream flow can overtop or funnel through gaps in the dams, leak from the bottom of the dams or seep through the entire structure. Peak and low flows are regulated by these dams to a varying extent. The formation of beaver ponds causes local f…
Reducing the Carbon Footprint of Canadian Peat Extraction and Restoration
The Canadian horticultural peat industry generates carbon emissions through various methods of peat extraction, processing, and land-use changes. This study provides a carbon emissions analysis comparing the traditional vacuum harvest (VH) and block-cut (BC) extraction techniques to a new acrotelm transplant (AT) method that restores natural peatland function by preserving and replacing the surface layer vegetation as part of the extraction proce…
Effects of Beaver Dams on Subarctic Wetland Hydrology
Beaver dams are ubiquitous in subarctic wetlands, where runoff in the flat terrain is highly prone to changes as the stream courses are modified by beaver activities. Depending on the state of preservation, stream flow can overtop or funnel through gaps in the dams, leak from the bottom of the dams or seep through the entire structure. Peak and low flows are regulated by these dams to a varying extent. The formation of beaver ponds causes local f…
Reducing the Carbon Footprint of Canadian Peat Extraction and Restoration
The Canadian horticultural peat industry generates carbon emissions through various methods of peat extraction, processing, and land-use changes. This study provides a carbon emissions analysis comparing the traditional vacuum harvest (VH) and block-cut (BC) extraction techniques to a new acrotelm transplant (AT) method that restores natural peatland function by preserving and replacing the surface layer vegetation as part of the extraction proce…
Did enhanced afforestation cause high severity peat burn in the Fort McMurray Horse River wildfire
Climate change mediated drying of boreal peatlands is expected to enhance peatland afforestation and wildfire vulnerability. The water table depth–afforestation feedback represents a positive feedback that can enhance peat drying and consolidation and thereby increase peat burn severity; exacerbating the challenges and costs of wildfire suppression efforts and potentially shifting the peatland to a persistent source of atmospheric carbon. To addr…
Shallow peat is most vulnerable to high peat burn severity during wildfire
Peatlands typically act as carbon sinks, however, increasing wildfire severity and annual area burned may challenge this carbon sink status. Whilst most peat resistance to wildfire and drought research is based on deep peatlands that rarely lose their water table below the peat profile, shallow peatlands and peat deposits may be most vulnerable to high peat burn severity and extensive carbon loss. To examine the role of pre-fire peat depth on pea…
The influence of system heterogeneity on peat-surface temperature dynamics
Temperatures at the soil–atmosphere interface influence ecosystem function by driving nonlinear terrestrial biogeochemical, ecohydrological, and micrometeorological processes. Whilst climate, soil and vegetation controls on spatially average ecosystem temperatures are recognised, how interacting and heterogeneous ecosystem layers create spatio-temporal complex thermal ecosystems has not been determined. Such thermal hot spots and hot moments may …
The biophysical climate mitigation potential of boreal peatlands during the growing season
Peatlands and forests cover large areas of the boreal biome and are critical for global climate regulation. They also regulate regional climate through heat and water vapour exchange with the atmosphere. Understanding how land-atmosphere interactions in peatlands differ from forests may therefore be crucial for modelling boreal climate system dynamics and for assessing climate benefits of peatland conservation and restoration. To assess the bioph…
Peat fires and the unknown risk of legacy metal and metalloid pollution
Introduction. Peatlands have persisted for millennia, acting as\nglobally-important sinks of atmospheric carbon\ndioxide (Yu 2012) and regionally-important role\nsinks of pollutants, such as lead, arsenic, or mercury (toxic metals and metalloids, TMMs) (Bindler\n2006). The role peatlands play in atmospheric carbon sequestration often overshadows their role in\nstoring pollutants despite, for example, peat mercury\naccumulation rates increasing 60…
Globally-significant arsenic release by wildfires in a mining-impacted boreal landscape
Metal mining and smelting activities are one of the largest anthropogenic sources of arsenic pollution to the environment, with pervasive consequences to human and environmental health. Several decades of metal processing activities near Yellowknife, NT, Canada have resulted in widespread accumulation of arsenic in biomass, soils, and sediments, exceeding environmental and human health limits. The landscape surrounding Yellowknife is frequently d…
Shallow peatlands as sentinels of climate change
Environmental Science (9 works) · Geography (8 works) · Geology (8 works) · Peat (7 works) · Peatlands and Wetlands Ecology (7 works) · Ecology (6 works) · Fire effects on ecosystems (6 works) · Climate change (4 works) · Archaeology (3 works) · Boreal (3 works)