2025

Wright S, Auclaire M, Sonnetag O, Olefeldt D, Quinton WL (2025) A decade of post-fire succession amplifies the effect of wildfire on the surface radiation balance and permafrost thaw in subarctic peatlands. Permafrost and Periglacial Processes https://doi.org/10.1002/ppp.70016

Schulze C, Sonnentag O, Emmerton C, Harris L, Alcock H, Marouelli K, Gosselin GH, Olefeldt D (2025) Large carbon losses from burned permafrost peatlands during post-fire succession. Geophysical Research Letters 52, e2025GL118344 https://doi.org/10.1029/2025GL118344

Hashemi J, Rasanan A, Virtanen T, Juutinen S, Grosse G, Aurela M, Bartsch A, Olefeldt D et al., (2025) Coarse land cover datasets bias Arctic-Boreal wetland methane budgets. Communications Earth & Environment 6, 903 https://doi.org/10.1038/s43247-025-02963-1

Thompson L, Shewan R, Mangal V, Harris L, Cheng E, Lucas B, Kolmakova O, Tanentzap A, Knorr K-H, Kuhn M, Haugk C, Azaroff A, Jonsson S, St Louis V, Lehnherr I, Quinton W, Sonnentag O, Olefeldt D (2025) Production of Methylmercury in Peatlands Following Permafrost Thaw Increases along a Trophic Gradient. Environmental Science & Technology X,X, http://10.1021/acs.est.5c04510

Kuhn M, Olefeldt D, Arndt K, Bastviken D, Bruhweiler L, Crill P, DelSontro T, +15 co-authors (2025) Current and future methane emissions from boreal-Arctic wetlands and lakes. Nature Climate Change 15, 986-991, http://10.1038/s41558-025-02413-y

Webb H, Fuchs M, Abbott BW, Douglas TA, Elder C, Olefeldt D +18 co-authors. (2025) A review of abrupt permafrost thaw: Definitions, usage, and a proposed conceptual framework. Current Climate Change Reports 11, 7, https://doi.org/10.1007/s40641-025-00204-3

Talucci A, Loranty MM, Holloway JE, Rogers BM, Alexander HM, Olefeldt D + 34 co-authors (2025) Permafrost-wildfire interactions: Active layer thickness estimates for paired burned and unburned sites in northern high-latitudes. Earth System Science Data 17, 2887–2909, https://doi.org/10.5194/essd-17-2887-2025

Lehner B, Anand M, Fluet-Chouinard E, Tan F, Aires F, Olefeldt D, +21 co-authors (2025) Mapping the world’s inland surface waters: an update to the Global Lakes and Wetlands Database (GLWD v2). Earth System Science Data 17, 2277–2329, https://doi.org/10.5194/essd-17-2277-2025

Spiller A, Kallenbach CA, Burnett MS, Olefeldt D, Schulze C, Maranger R, Douglas PMJ (2025) Gradual drying of permafrost peat decreases carbon dioxide in drier peat plateaus but not in wetter fens and bogs. Soil, 11, 371–379, https://doi.org/10.5194/soil-11-371-2025

2024

Hugelius G, Ramage J, Burke E, Chatterjee A, Kuhn MKA, Olefeldt D +37 co-authors (2024) Two decades of permafrost region CO2, CH4, and N2O budgets suggest a small net greenhouse gas source to the atmosphere. Global Biogeochemical Cycles, e2023GB007969, https://doi.org/10.1029/2023GB007969

Frei R, Shewan R, Cao M, Abbott B, Olefeldt D (2024) Impact of peat extraction on concentrations and downstream attenuation of dissolved organic carbon and nutrients. Water Resources Research, 60, e2024WR037397, https://doi.org/10.1029/2024WR037397

Heffernan L, Estop-Aragones C, Kuhn M, Knorr K-H, Olefeldt D (2024) Changing climatic controls on the greenhouse gas balance of thermokarst bogs during succession after permafrost thaw. Global Change Biology, 30, e17388, https://doi.org/10.1111/gcb.17388

Kuhn MKA, Varner R, McCalley C, Perryman C, Heffernan L, Schulze C, Olefeldt D +20 co-authors (2024) Stable Methane Isotope Signatures Correlate with Peatland Types in Northern Regions. Journal Geophysical Research – Biogeosciences, 129, e2023JG007837, https://doi.org/10.1029/2023JG007837

See C, Virkkala A-M, Natali S, Rogers B, Mauritz M, Heffernan L, Schulze C, Olefeldt D +66 Co-authors (2024) Decadal increases in carbon uptake offset by respiratory losses across northern permafrost ecosystems. Nature Climate Change, 14, 853–862, https://doi.org/10.1038/s41558-024-02057-4

Orlova J, Amiri F, Bourgeois A, Buttle JM, Hutchins R, Thompson L, Olefeldt D +13 co-authors (2024) Composition of Stream Dissolved Organic Matter across Canadian Forested Ecozones Varies in Three Dimensions Linked to Landscape and Climate. Water Resources Research, 60, e2023WR035196, https://doi.org/10.1029/2023WR035196

Osborne C, Gilbert-Parkes S, Spiers G, Lamit LJ, Lilleskov EA, Olefeldt D + 43 co-authors (2024) Global Patterns of Metal and Other Element Enrichment in Bog and Fen Peatlands. Archives of Environmental Contamination and Toxicology, 86, 125-139, https://doi.org/10.1007/s00244-024-01051-3

Ramage J, Kuhn MKA, Virkkala A-M, Voigt C, Olefeldt D +15 co-authors (2024) The net GHG balance and budget of the permafrost region (2000-2020) from ecosystem flux upscaling. Global Biogeochemical Cycles, 38, e2023GB007953, https://doi.org/10.1029/2023GB007953

2023

Thompson L, Shewan R, Christopher S, Low M, Tank S, Sonnentag O, Olefeldt D (2023) Concentrations and yields of mercury, methylmercury, and dissolved organic carbon from contrasting catchments in the discontinuous permafrost region, western Canada. Water Resources Research, 59, e2023WR034848, https://doi.org/10.1029/2023WR034848

Hutchins R, Tank S, Olefeldt D, Quinton WL, Spence C, Dion N, Mengistu S (2023) Influence of wildfire on downstream transport of dissolved carbon, nutrients, and mercury in the permafrost zone of Boreal western Canada. Journal Geophysical Research – Biogeosciences, 128, e2023JG007602 https://doi.org/10.1029/2023JG007602

Harris LI, Olefeldt D, Pelletier N, Blodau C, Knorr K-H, Talbot J, Heffernan L, Turetsky MR (2023) Permafrost thaw causes large carbon loss in boreal peatlands while changes to peat quality are limited. Global Change Biology, 29, 5720-5735 https://doi.org/10.1111/gcb.16894

Yang G, Zheng Z , Abbott B , Olefeldt D , Knoblauch D , Song Y , Kang L , Qin S , Peng Y (2023) Methane emissions from alpine thermokarst lakes on the Tibetan Plateau: amount, origin, and methanogenic microorganisms. Nature Communications, 14, 3121 https://doi.org/10.1038/s41467-023-38907-6

Winder JC, Braga LPP, MKA Kuhn, Thompson LM, Olefeldt D, Tanentzap AJ (2023) Climate warming has direct and indirect effects on microbes associated with carbon cycling in northern lakes. Global Change Biology, 29, 3039-3053 https://doi.org/10.1111/gcb.16655

Schulze C, Sonnentag O, Voigt C, Thompson L, van Delden L, Heffernan L, Hernandez-Ramirez G, Kuhn MA, Lin S, Olefeldt D (2023) Nitrous Oxide Fluxes in Permafrost Peatlands remain negligible after Wildfire and Thermokarst Disturbance. JGR-Biogeosciences, 128, e2022JG007322 https://doi.org/10.1029/2022JG007322

Thompson L, Kuhn MA, Winder J, Braga L, Hutchins R, Tanentzap A, St Louis V, Olefeldt D (2023) Controls on methylmercury concentrations in lakes and streams of peatland-rich catchments along a 1700 km permafrost gradient. Limnology and Oceanography, 68, 583-597 https://doi.org/10.1002/lno.12296

Kuhn MA, Schmidt M, Heffernan L, Struhrenberg J, Knorr K-H, Estop-Aragones C, Broder T, Moguel RG, Douglas PMJ, Olefeldt D (2023) High ebullitive, millennial-aged greenhouse gas emissions from thermokarst expansion of peatland lakes in boreal western Canada. Limnology and Oceanography, 68, 498-513, https://doi.org/10.1002/lno.12288

2022

Estop-Aragones C, Heffernan L, Knorr K-H, Olefeldt D (2022) Limited Potential for Mineralization of Permafrost Peatland Soil Carbon Following Thermokarst: Evidence From Anoxic Incubation and Priming Experiments. Journal of Geophysical Research – Biogeosciences, 127, e2022JG006910, https://doi.org/10.1029/2022JG006910

Schuur EAG, Abbott BW, Commane R, Ernakovich J, Euskirchen E, Olefeldt D +15 co-authors (2022) Permafrost and climate change: Carbon cycle feedbacks from the warming Arctic. Annual Reviews of Environment and Resources, 47, 343-371, https://doi.org/10.1146/annurev-environ-012220-011847

An Z, Bork E, Olefeldt D, Carlyle CN, Chang SX (2022) Simulated heat wave events increase CO2 and N2O emissions from cropland and forest soils in an incubation experiment. Biology and Fertility of Soils, 58, 789-802, https://doi.org/10.1007/s00374-022-01661-w

Abbott BW, Brown M, Carey JC, Ernakovich J, Olefeldt D +15 authors (2022) We Must Stop Fossil Fuel Emissions to Protect Permafrost Ecosystems. Front. Environ. Sci., https://doi.org/10.3389/fenvs.2022.889428

Wright SN, Thompson LM, Olefeldt D, Connon RF, Carpino OA, Beel CR, Quinton WL (2022) Thaw-induced impacts on land and water in discontinuous permafrost: A review of the Taiga Plains and Taiga Shield, northwestern Canada. Earth-Science Reviews, 232, 104104, https://doi.org/10.1016/j.earscirev.2022.104104

Heffernan L, Cavaco MA, Bhatia MP, Estop-Aragonés C, Knorr KH, Olefeldt D (2022) High peatland methane emissions following permafrost thaw: enhanced acetoclastic methanogenesis during early successional stages. Biogeosciences, 19(12), 3051-71, https://doi.org/10.5194/bg-19-3051-2022

2021

Elder CD, Thompson DR, Thorpe AK, Hanke PJ, Hasson N, James S, Minsley B, Pastick N, Olefeldt D, Walter-Anthony KM, Miller CE (2021) Characterizing Methane Emission Hotspots From Thawing Permafrost. Global Biogeochemical Cycles, doi.org/10.1029/2020GB006922

Kuhn MA, Thompson LM, Winder JC, Braga LP, Tanentzap AJ, Bastviken D, & Olefeldt D (2021) Opposing effects of climate and permafrost thaw on CH4 and CO2 emissions from northern lakes. AGU Advances, 2(4), e2021AV000515. https://doi.org/10.1029/2021AV000515

Pugh EA, Olefeldt D, Leader SN, Hokanson KJ, & Devito KJ (2021) Characteristics of Dissolved Organic Carbon in Boreal Lakes: High Spatial and Inter‐annual Variability Controlled by Landscape Attributes and Wet‐dry Periods. Water Resources Research, e2021WR030021. https://doi.org/10.1029/2021WR030021

Harris LI, Richardson K, Bona KA, Davidson SJ, + 12 co-authors (2021) The essential carbon service provided by northern peatlands. Frontiers in Ecology and the Environment, doi.org/10.1002/fee.2437

Tanentzap AJ, Burd K, Kuhn M, Estop-Aragonés C, Tank SE, & Olefeldt D (2021) Aged soils contribute little to contemporary carbon cycling downstream of thawing permafrost peatlands. Global Change Biology, 27(20), 5368-5382. https://doi.org/10.1111/gcb.15756

Olefeldt, D., Hovemyr, M., Kuhn, M. A., Bastviken, D., Bohn, T. J., Connolly, J., … & Watts, J. D. (2021). The Boreal–Arctic Wetland and Lake Dataset (BAWLD). Earth System Science Data, 13(11), 5127-5149. https://doi.org/10.5194/essd-13-5127-2021

Olefeldt D, Heffernan L, Jones MC, Sannel ABK, Treat CC, Turetsky MR (2021) Permafrost Thaw in Northern Peatlands: Rapid Changes in Ecosystem and Landscape Functions. In: Canadell J.G., Jackson R.B. (eds) Ecosystem Collapse and Climate Change. Ecological Studies (Analysis and Synthesis), vol 241. Springer, Cham. https://doi.org/10.1007/978-3-030-71330-0_3

Heffernan, L., Jassey, V. E., Frederickson, M., MacKenzie, M. D., & Olefeldt, D. (2021). Constraints on potential enzyme activities in thermokarst bogs: Implications for the carbon balance of peatlands following thaw. Global Change Biology, 27(19), 4711-4726. https://doi.org/10.1111/gcb.15758

Rosentreter JA, Borges AV, Deemer BR, Holgerson MA, Olefeldt D + 9 co-authors (2021) Half of global methane emissions come from highly variable aquatic ecosystem sources. Nature Geoscience, 14, 225–230. doi.org/10.1038/s41561-021-00715-2

Kuhn, M. A., Varner, R. K., Bastviken, D., Crill, P., MacIntyre, S., Turetsky, M., … & Olefeldt, D. (2021). BAWLD-CH 4: A Comprehensive Dataset of Methane Fluxes from Boreal and Arctic Ecosystems. Earth System Science Data Discussions, 1-56. https://doi.org/10.5194/essd-13-5151-2021

2020

Spence C, Hedstrom N, Tank SE, Quinton WL, Olefeldt D, Goodman S, Dion N (2020) Hydrological resilience to forest fire in the subarctic Canadian shield. Hydrological Processes, 34, 4940-4958, doi.org/10.1002/hyp.13915

Zolkos S, Tank SE, Striegl RG, Kokelj SV, Kokoszka J, Estop-Aragonés C, Olefeldt D (2020) Thermokarst amplifies fluvial inorganic carbon cycling and export across watershed scales on the Peel Plateau, Canada. Biogeosciences, 17, 5163–5182, doi.org/10.5194/bg-17-5163-2020

Orlova, J, Olefeldt, D, Yasinski, JH, & Anderson, AE (2020) Effects of Prescribed Burn on Nutrient and Dissolved Organic Matter Characteristics in Peatland Shallow Groundwater. Fire, 3(3), 53. https://doi.org/10.3390/fire3030053.

Helbig, M, Waddington, JM, Alekseychik, P, Amiro, B, Aurela, M, Barr, AG, … & Schulze, C (2020) The biophysical climate mitigation potential of boreal peatlands during the growing season. Environmental Research Letters, 15(10), 104004. https://doi.org/10.1088/1748-9326/abab34.

Mzobe P, Yan Y, Berggren M, Pilesjo P, Olefeldt D, Lundin E, Roulet NT, Persson A (2020) Morphometric control on dissolved organic carbon in subarctic streams. Journal of Geophysical Research: Biogeosciences, 125, e2019JG005348, doi.org/10.1029/2019JG005348

Pascual D, Akerman J, Becher M, Callaghan TV, Olefeldt D +23 co-authors (2020) The missing pieces for better future predictions in subarctic ecosystems: A Tornatrask case study. Ambio, 50, 375-392, doi.org/10.1007/s13280-020-01381-1

Hugelius G, Loisel J, Chadburn S, Jackson RB, Jones M, MacDonald G, Marushchak M, Olefeldt D, Packalen M, Siewert MB, Treat CC, Turetsky M, Voigt C, Yu Z (2020) Large stocks of peatland carbon and nitrogen are vulnerable to permafrost thaw. Proceedings of the National Academy of Sciences, 117, 20438-20446. https://doi.org/10.1073/pnas.1916387117.

Estop‐Aragonés C, Olefeldt D, Abbott BW, Chanton JP, Czimczik CI, Dean JF, Egan JE, Gandois L, Garnett MH, Hartley IP, Hoyt A, Lupascu M, Natali SM, O’Donnell JA, Raymond PA, Tanentzap AJ, Tank SE, Schuur EAG, Turetsky M, Walter Anthony K (2020) Assessing the Potential for Mobilization of Old Soil Carbon after Permafrost Thaw: A Synthesis of 14C Measurements from the Northern Permafrost Region. Global Biogeochemical Cycles. https://doi.org/10.1029/2020GB006672.

Burd K, Estop-Aragonés C, Tank S, Olefeldt D (2020) Lability of dissolved organic carbon from boreal peatlands: interactions between permafrost thaw, wildfire, and season. Canadian Journal of Soil Science, https://doi.org/10.1139/cjss-2019-0154.

Heffernan L, Estop-Aragonés C, Knorr K-H, Talbot J, Olefeldt D (2020) Long-term impacts of permafrost thaw on carbon storage in peatlands: deep losses offset by surficial accumulation. Journal of Geophysical Research – Biogeosciences, 125, https://doi.org/10.1029/2019JG005501.

Hutchins RHS, Tank SE, Olefeldt D, Quinton WL, Spence C, Dion N, Estop-Aragonés C, Mengistu SG (2020) Fluvial CO2 and CH4 patterns across wildfire‐disturbed ecozones of subarctic Canada: Current status and implications for future change. Global Change Biology, 26, 2304-2319. https://doi.org/10.1111/gcb.14960.

Turetsky MR, Abbott BW, Jones MC, Walter-Anthony K, Olefeldt D +9 authors (2020) Carbon release through abrupt permafrost thaw. Nature Geoscience, 13, 138-143. https://doi.org/10.1038/s41561-019-0526-0.

Kropp H, Loranty MM, Natali SM, Kholodov AL, Olefeldt D +44 co-authors (2020) Shallow soils are warmer under trees and tall shrubs across Arctic and Boreal ecosystems. Environmental Research Letters, 16, 015001, doi.org/10.1088/1748-9326/abc994

2019

Gibson C, Estop-Aragonés C, Flannigan MD, Thompson D, Olefeldt D (2019) Increased deep soil respiration detected despite reduced overall respiration in permafrost peat plateaus following wildfire. Environmental Research Letters, 14, 125001.

Natali SM, Watts JD, Potter S, Rogers B, Olefeldt D + 71 other co-authors (2019) Large loss of CO2 in winter observed across pan-arctic permafrost region. Nature Climate Change, 9, 852-857.

Turetsky MR, Abbott BW, Jones MC, Walter Anthony K, Olefeldt D, Schuur EAG, Koven C, McGuire AD, Grosse G, Kuhry P, Hugelius G, Lawrence DM, Gibson C, Sannel ABK (2019) Permafrost collapse is accelerating carbon release. Nature, 569, 32-34.

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

2018

Gibson CM, Chasmer L, Thompson D, Quinton WL, Flannigan M, Olefeldt D (2018) Wildfire as a major driver of recent permafrost thaw in boreal peatlands. Nature Communications, 9, 3041.

Estop-Aragonés C, Czimczik CI, Heffernan L, Gibson C, Walker JC, Xu X, Olefeldt D (2018) Respiration of aged soil carbon during fall in permafrost peatlands enhanced by active layer deepening following wildfire but limited following thermokarst. Environmental Research Letters, 13, 085002.

K Burd, SE Tank, N Dion, WL Quinton, C Spence, AJ Tanentzap, D Olefeldt. Seasonal shifts in export of DOC and nutrients from burned and unburned peatland-rich catchments, Northwest Territories, Canada, Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2018-253, in review, 2018.

G Yang, Y Peng, D Olefeldt, Y Chen, G Wang, F Li, D Zhang, J Wang, J Yu, L Liu, S Qin, T Sun, Y Yang. Changes in methane flux along a permafrost thaw sequence on the Tibetan Plateau. Environmental science & technology, 2018, 52:1244-1252.

J Tang, AY Yurova, G Schurgers, PA Miller, S Olin, B Smith, MB Siewert, D Olefeldt, P Pilesjö, A Poska. Drivers of dissolved organic carbon export in a subarctic catchment: Importance of microbial decomposition, sorption-desorption, peatland and lateral flow. Science of the Total Environment, 2018, 622:260-274.

Mzobe P, Berggren M, Pilesjo P, Lundin E, Olefeldt D, Roulet N (2018) Dissolved organic carbon in streams within a subarctic catchment analysed using a GIS/remote sensing approach. PLoS One, 13, e0199608.

2017

N Pelletier, J Talbot, D Olefeldt. Influence of Holocene permafrost aggradation and thaw on the paleoecology and carbon storage of a peatland complex in northwestern Canada. The Holocene, 27:1391-1405.

D Olefeldt, E Euskirchen, J Harden, E Kane, AD McGuire, MP Waldrop, MR Turetsky. A decade of boreal rich fen greenhouse gas fluxes in response to natural and experimental water table variability. Global Change Biology, 2017, 23:2428-2440.

2016

D Olefeldt, S Goswami, G Grosse, D Hayes, G Hugelius, P Kuhry, AD McGuire, VE Romanovsky, ABK Sannel, EAG Schuur, MR Turetsky. Circumpolar distribution and carbon storage of thermokarst landscapes. Nature Communications, 7, 13043. doi:10.1038/ncomms13043

J Gordon, W Quinton, BA Branfireun, D Olefeldt. Mercury and methylmercury biogeochemistry in a thawing permafrost wetland complex, Northwest Territories, Canada. Hydrological Processes, 30, 3627-3638. doi:10.1002/hyp.10911

BW Abbott, D Olefeldt, et al. Biomass offsets little or none of permafrost carbon release from soils, streams, and wildfire: an expert assessment. Environmental Research Letters, 11:034014. doi:10.1088/1748-9326/11/3/034014

EJ Lundin, J Klaminder, R Giesler, A Persson, D Olefeldt, M Heliasz, TR Christensen, J Karlsson. Is the subarctic landscape still a carbon sink? Evidence from a detailed catchment balance. Geophysical Research Letters, 43, 1988-1995. doi:10.1002/2015GL066970.

2015

CD Koven, D Olefeldt, et al. (2015) A simplified, data-constrained approach to estimate the permafrost carbon-climate feedback. Philosophical Transactions of the Royal Society A, 373, 20140423, doi:10.1098/rsta.2014.0423.

M Campioli, D Olefeldt, et al. (2015) Biomass production efficiency controlled by management in temperate and boreal ecosystems. Nature Geoscience, 8, 843-846, doi:10.1038/NGEO2553.

EAG Schuur, AD McGuire, C Schädel, G Grosse, JW Harden, DJ Hayes, G Hugelius, CD Koven, P Kuhry, DM Lawrence, SM Natali, D Olefeldt, VE Romanovsky, K Schaefer, MR Turetsky, CC Treat, JE Vonk. (2015) Climate change and the permafrost carbon feedback. Nature, 520, 171-179. doi:10.1038/nature14338.

J Tang, PA Miller, A Persson, D Olefeldt, P Pilesjö, M Heliasz, M Jackowicz-Korczynski, Z Yang, B Smith, TV Callaghan, TR Christensen (2015) Carbon budget estimation of a subarctic catchment using a dynamic ecosystem model at high spatial resolution. Biogeosciences, 12, 2791-2808. doi:10.5194/bg-12-2791-2015.

2014

D Olefeldt, N Roulet. (2014) Permafrost conditions in peatlands regulate magnitude, timing, and chemical composition of catchment dissolved organic carbon export. Global Change Biology, 20, 3122-3136. doi:10.1111/gcb.12607

MR Turetsky, D Olefeldt, et al. (2014) A synthesis of methane emissions from 71 northern, temperate, and subtropical wetlands. Global Change Biology, 20, 7, 2183-2197. doi:10.1111/gcb.12580

D Olefeldt, Andreas Persson, MR Turetsky. (2014) Influence of the permafrost boundary on dissolved organic matter characteristics in rivers within the Boreal and Taiga plains of western Canada. Environmental Research Letters, 9, 035005, doi:10.1088/1748-9326/9/3/035005