James Michael Waddington
James Michael Waddington
Professor, Canada Research Chair (Tier 1) in Ecohydrology
General Science Building, Rm 234
(905) 525-9140 ext. 23217
(905) 546-0463

Dr. James Michael Waddington's research in ecohydrology studies the ecological and hydrological processes that underlie the structure and function of wetlands and watershed ecosystems and the distribution, movement, and quality of water.

With our research foundation firmly in hydrology and by adopting a watershed ecosystems framework, we use innovative field experimental manipulations and ecohydrological modelling to understand watershed interactions of water, vegetation, soil and greenhouse gas exchange. Our research examines the effects of wildfire, drought and resource extraction on watershed ecohydrology with a focus on ecosystems, such as peatlands, that may be sensitive to changes in hydrology. We are developing new hydrological and modelling tools for resource managers, fire managers and our industrial partners.

Ecohydrology; Impacts of drought; Wildfire and land-use change on boreal wetlands and reptiles-at-risk habitat; Watershed reclamation strategies; Wildfire mitigation strategies; Wetland habitat restoration

  • Envir 3B03 ( Course Outline): Global Change, Ecosystems and the Earth System (Term Two) 2018-19
  • Envir 4BB3 (Course Outline): Ecohydrology (Term One) 2018-19
  • Earth Sc 6BB3: Ecohydrology (Term One) 2018-19

Publications on Google Scholar

Click Here for Full Publication List

(students and postdoctoral fellows I have supervised are underlined)

Kettridge N , Tilak AS, Devito KJ, Petrone RM, Mendoza C, Waddington JM. 2015. Moss and peat hydraulic properties are optimized to maximize peatland water use efficiency. Ecohydrology in press, doi: 10.1002/eco.1708.

Hokanson H , Lukenbach MC , Devito KJ , Kettridge N , Petrone RM , Waddington JM. 2015. Groundwater connectivity controls peat burn severity in the Boreal Plains. Ecohydrology in press, doi: 10.1002/eco.1657.

Lukenbach M , Kettridge N , Devito KJ , Petrone R , Waddington JM. 2015. Burn severity alters peatland moss water availability: Implications for post-fire recovery. Ecohydrology in press, doi: 10.1002/eco.1639.

Lukenbach MC , Kettridge N , Devito KJ, Petrone RM, Waddington JM. 2015. Hydrogeological controls on post-fire moss recovery in peatlands. Journal of Hydrology 530: 405-418, doi: 10.1016/j.jhydrol.2015.09.075.

Moore PA , Waddington JM. 2015. Modelling Sphagnum moisture stress in response to 21st century climate change. Hydrological Processes 29 : 3966-3982, doi: 10.1002/hyp.10484.

Lukenbach MC , Hokanson H , Moore PA , Devito KJ, Kettridge N , Thompson DK , Wotton BM, Petrone RM, Waddington JM. 2015. Hydrological controls on deep burning in a northern forested peatland. Hydrological Processes 29: 4114-4124, doi: 10.1002/hyp.10440..

Thompson DK , Baisley S , Waddington JM. 2015. Seasonal variation in albedo and radiation exchange between a burned and unburned forested peatland: Implications for peatland evaporation Hydrological Processes 29: 3227-3235, doi: 10.1002/hyp.10436.

Moore PA , Morris PJ, Waddington JM. 2015. Multi-decadal water table manipulation alters peatland hydraulic structure and moisture retention. Hydrological Processes 29 : 2970-2982, doi:10.1002/hyp.10416.

Wilhelm LP , Morris PJ , Granath G , Waddington JM. 2015. Assessment of an integrated peat-harvesting and reclamation method: Peatland-atmosphere carbon fluxes and vegetation recovery. Wetland Ecology and Management 23: 491-504, doi: 10.1007/s11273-014-9399-6.

Ramirez J, Baird AJ, Coulthard T, Waddington JM. 2015. Ebullition of methane from peatlands: Does peat act as a signal shredder? Geophysical Research Letters 42: 3371-3379, doi: 10.1002/2015GL063469.

Ramirez J, Baird AJ, Coulthard T, Kirkby MJ, Waddington JM. 2015. Testing a simple model of gas bubble dynamics in porous media. Water Resources Research 51: 1036-1049, doi: 10.1002/2014WR015898.

Thompson DK, Wotton BM, Waddington JM. 2015. Estimating the heat transfer to an organic soil surface during crown fire. International Journal of Wildland Fire in press, doi: 10.1071/WF12121.

Waddington JM, Morris PJ, Kettridge N, Granath G, Thompson DK, Moore, PA. 2015. Hydrological feedbacks in northern peatlands. Ecohydrology 8: 113-127, doi: 10.1002/eco.1493.

Kettridge N, Turetsky MR, Sherwood JH, Thompson DK, Miller CA, Benscoter BW, Flannigan MD, Wotton M, Waddington JM. 2015. Moderate drop in water table increases peatland vulnerability to post-fire regime shift. Nature Scientific Reports 5: 8063, doi:10.1038/srep08063.

Thompson DK, Benscoter BW, Waddington JM . 2014. Water balance of a burned and unburned forested boreal peatland. Hydrological Processes 28 : 5954-5964, doi: 10.1002/hyp.10074.

Comas X, Kettridge N, Binley A, Slater L, Parsekian A, Baird AJ, Strack M, Waddington JM . 2014. The effect of peat structure on the spatial distribution of biogenic gases within bogs. Hydrological Processes 28 : 5483-5494, doi: 10.1002/hyp.10056.

Thompson DK, Waddington JM. 2014. A Markov chain method for simulating bulk density profiles in boreal peatlands. Geoderma 232-234 : 123-129, doi: 10.106/j.geoderma.2014.04.032.

Turetsky MR, Kotowska A, Bubier B, Dise NB, Crill P, Hornibrook E, Minkinnen K, Moore TR, Myers-Smith IH, Nykanen H, Olefeldt D, Rinne J, Saarnio S, Shurpali N, Waddington JM , White J, Wickland K, Wilmking M. 2014. A synthesis of methane emissions from 71 northern, temperate, and subtropical wetlands. Global Change Biology 20 : 2183-2197, doi: 10.1111/gcb.12580.

Kettridge N, Humphrey R, Smith JA, Lukenbach MC, Devito KJ, Petrone RM, Waddington JM. 2014. Burned and unburned peat water repellency: Implications for peatland evaporation following wildfire. Journal of Hydrology 513 : 335-341, doi: 10.1016/j.jhydrol.2014.03.019.

Klapstein SJ, Turetsky MR, McGuire AD, Harden JW, Czimczik CI, Xiaomei X, Chanton JP, Waddington JM . 2014. Controls on the rate and age of methane released through ebullition from Alaska peatlands following permafrost degradation. Journal of Geophysical Research 119 : 418-431, doi: 10.1002/2013JG002441.

Kettridge N, Waddington JM. 2014. Towards quantifying the negative feedback regulation of peatland evaporation to drought. Hydrological Processes 28 : 3728-3740, doi: 10.1002/hyp.9898.

Pypker TG, Moore PA, Waddington JM, Hribljan JA, Chimner RA. 2013. Shifting environmental controls on CH4 fluxes in a sub-boreal peatland. Biogeosciences 10 : 7971-7981, doi:10.5194/bgd-10-11757-2013.

Moore PA, Pypker TG, Waddington JM . 2013. Effect of long-term water table manipulation on peatland evapotranspiration. Agricultural and Forest Meteorology 178 : 106-119, doi: 10.1016/j.agrformet.2013.04.013.

Sherwood JH, Kettridge N, Thompson DK, Morris PJ, Silins U, Waddington JM. 2013. Effect of drainage and wildfire on peat hydrophysical properties. Hydrological Processes 27: 1866-1874, doi: 10.1002/hyp.9820.

Kettridge N, Thompson DK, Bombonato L, Turetsky MR, Benscoter BW, Waddington JM. 2013. The ecohydrological functioning of forested peatlands: Simulating the effects of tree shading on peatland evaporation and moss species composition . Journal of Geophysical Research in press. 118 : 1-14, doi: 10.1002/jgrg.20043.

Thompson DK, Waddington JM. 2013. Wildfire effects on vadose zone hydrology in forested boreal peatland microforms. Journal of Hydrology 486: 48-56, doi: 10.1016/j.hydrol.2013.01.014.

Thompson DK, Waddington JM. 2013. Peat properties and water retention in boreal forested peatlands subject to wildfire disturbance. Water Resources Research 49: 3651-3658, doi: 10.1002/wrcr.20278.

Fan Z, McGuire AD, Turetsky MR, Harden JW, Waddington JM , Kane ES. 2013. The response of soil organic carbon of a rich fen peatland in interior Alaska to projected climate change. Global Change Biology 19: 604 - 620, doi: 10.1111/gcb.12041.

Macrae ML, Devito KJ, Strack M, Waddington JM. 2013. Effect of water table drawdown on peatland nutrient dynamics: Implications for climate change. Biogeochemistry 112 : 661-676, doi: 10.1007/s10533-012-9730-3.

Kettridge N, Kellner E, Price JS, Waddington JM. 2013. Peat deformation and biogenic gas bubbles control seasonal variations in peat hydraulic conductivity. Hydrological Processes 27 : 3208-3216, doi: 10.1002/hyp.9369.


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