Lower soil moisture and deep soil temperatures in thermokarst features increase old soil carbon loss after 10 years of experimental permafrost warming

Pegoraro, Elaine F.; Mauritz, Marguerite E.; Ogle, Kiona; Ebert, Christopher H.; Schuur, Edward A. G.

doi:10.1111/gcb.15481

Title: Lower soil moisture and deep soil temperatures in thermokarst features increase old soil carbon loss after 10 years of experimental permafrost warming

Journal Article · Thu Dec 10 00:00:00 EST 2020 · Global Change Biology

DOI:https://doi.org/10.1111/gcb.15481· OSTI ID:1834570

^[1];

^[2];

^[3];

^[3]

Northern Arizona Univ., Flagstaff, AZ (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Univ. of Texas, El Paso, TX (United States)
Northern Arizona Univ., Flagstaff, AZ (United States)

Abstract Almost half of the global terrestrial soil carbon (C) is stored in the northern circumpolar permafrost region, where air temperatures are increasing two times faster than the global average. As climate warms, permafrost thaws and soil organic matter becomes vulnerable to greater microbial decomposition. Long‐term soil warming of ice‐rich permafrost can result in thermokarst formation that creates variability in environmental conditions. Consequently, plant and microbial proportional contributions to ecosystem respiration may change in response to long‐term soil warming. Natural abundance δ ¹³ C and Δ ¹⁴ C of aboveground and belowground plant material, and of young and old soil respiration were used to inform a mixing model to partition the contribution of each source to ecosystem respiration fluxes. We employed a hierarchical Bayesian approach that incorporated gross primary productivity and environmental drivers to constrain source contributions. We found that long‐term experimental permafrost warming introduced a soil hydrology component that interacted with temperature to affect old soil C respiration. Old soil C loss was suppressed in plots with warmer deep soil temperatures because they tended to be wetter. When soil volumetric water content significantly decreased in 2018 relative to 2016 and 2017, the dominant respiration sources shifted from plant aboveground and young soil respiration to old soil respiration. The proportion of ecosystem respiration from old soil C accounted for up to 39% of ecosystem respiration and represented a 30‐fold increase compared to the wet‐year average. Our findings show that thermokarst formation may act to moderate microbial decomposition of old soil C when soil is highly saturated. However, when soil moisture decreases, a higher proportion of old soil C is vulnerable to decomposition and can become a large flux to the atmosphere. As permafrost systems continue to change with climate, we must understand the thresholds that may propel these systems from a C sink to a source.

View Accepted Manuscript (DOE)

View Accepted Manuscript (Publisher)

Cite

Export

Save

Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Biological and Environmental Research (BER)

Grant/Contract Number:: AC02-05CH11231; DE‐SC0006982; DE‐SC0014085

OSTI ID:: 1834570

Alternate ID(s):: OSTI ID: 1804921

Journal Information:: Global Change Biology, Vol. 27, Issue 6; ISSN 1354-1013

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

References (77)

Thermal Properties of Soils as affected by Density and Water Content Abu-Hamdeh, Nidal H. Biosystems Engineering, Vol. 86, Issue 1 https://doi.org/10.1016/S1537-5110(03)00112-0	journal	September 2003
Temperature sensitivity of organic matter decomposition of permafrost-region soils during laboratory incubations Bracho, Rosvel; Natali, Susan; Pegoraro, Elaine Soil Biology and Biochemistry, Vol. 97 https://doi.org/10.1016/j.soilbio.2016.02.008	journal	June 2016
Vulnerability of Permafrost Carbon to Climate Change: Implications for the Global Carbon Cycle Schuur, Edward A. G.; Bockheim, James; Canadell, Josep G. BioScience, Vol. 58, Issue 8 https://doi.org/10.1641/B580807	journal	September 2008
Plant species traits are the predominant control on litter decomposition rates within biomes worldwide Cornwell, William K.; Cornelissen, Johannes H. C.; Amatangelo, Kathryn Ecology Letters, Vol. 11, Issue 10 https://doi.org/10.1111/j.1461-0248.2008.01219.x	journal	October 2008
Advances in Thermokarst Research: Recent Advances in Research Investigating Thermokarst Processes Kokelj, S. V.; Jorgenson, M. T. Permafrost and Periglacial Processes, Vol. 24, Issue 2 https://doi.org/10.1002/ppp.1779	journal	April 2013
Inference from Iterative Simulation Using Multiple Sequences Gelman, Andrew; Rubin, Donald B. Statistical Science, Vol. 7, Issue 4 https://doi.org/10.1214/ss/1177011136	journal	November 1992
The concentration and isotopic abundances of carbon dioxide in rural and marine air Keeling, Charles D. Geochimica et Cosmochimica Acta, Vol. 24, Issue 3-4 https://doi.org/10.1016/0016-7037(61)90023-0	journal	July 1961
Ecological Response to Permafrost Thaw and Consequences for Local and Global Ecosystem Services Schuur, Edward A. G.; Mack, Michelle C. Annual Review of Ecology, Evolution, and Systematics, Vol. 49, Issue 1 https://doi.org/10.1146/annurev-ecolsys-121415-032349	journal	November 2018
Climate change and the permafrost carbon feedback Schuur, E. A. G.; McGuire, A. D.; Schädel, C. Nature, Vol. 520, Issue 7546 https://doi.org/10.1038/nature14338	journal	April 2015
Beyond simple linear mixing models: process-based isotope partitioning of ecological processes Ogle, Kiona; Tucker, Colin; Cable, Jessica M. Ecological Applications, Vol. 24, Issue 1 https://doi.org/10.1890/1051-0761-24.1.181	journal	January 2014
Decomposition of old organic matter as a result of deeper active layers in a snow depth manipulation experiment Nowinski, Nicole S.; Taneva, Lina; Trumbore, Susan E. Oecologia, Vol. 163, Issue 3 https://doi.org/10.1007/s00442-009-1556-x	journal	January 2010
Adding Depth to Our Understanding of Nitrogen Dynamics in Permafrost Soils Salmon, Verity G.; Schädel, Christina; Bracho, Rosvel Journal of Geophysical Research: Biogeosciences, Vol. 123, Issue 8 https://doi.org/10.1029/2018JG004518	journal	August 2018
Dependence of the evolution of carbon dynamics in the northern permafrost region on the trajectory of climate change McGuire, A. David; Lawrence, David M.; Koven, Charles Proceedings of the National Academy of Sciences, Vol. 115, Issue 15 https://doi.org/10.1073/pnas.1719903115	journal	March 2018
Diurnal cycle of carbon isotope ratio in soil CO2 in various ecosystems Dudziak, Andrzej; Halas, Stanislaw Plant and Soil, Vol. 183, Issue 2 https://doi.org/10.1007/BF00011444	journal	January 1996
CLIMATE CHANGE: Permafrost and the Global Carbon Budget Zimov, S. A. Science, Vol. 312, Issue 5780 https://doi.org/10.1126/science.1128908	journal	June 2006
Soil Thermal Conductivity Abu-Hamdeh, Nidal H.; Reeder, Randall C. Soil Science Society of America Journal, Vol. 64, Issue 4 https://doi.org/10.2136/sssaj2000.6441285x	journal	January 2000
Divergent patterns of experimental and model-derived permafrost ecosystem carbon dynamics in response to Arctic warming Schädel, Christina; Koven, Charles D.; Lawrence, David M. Environmental Research Letters, Vol. 13, Issue 10 https://doi.org/10.1088/1748-9326/aae0ff	journal	October 2018
Experimental Warming Alters Productivity and Isotopic Signatures of Tundra Mosses Deane-Coe, Kirsten K.; Mauritz, Marguerite; Celis, Gerardo Ecosystems, Vol. 18, Issue 6 https://doi.org/10.1007/s10021-015-9884-7	journal	May 2015
Permafrost Degradation and Ecological Changes Associated with a WarmingClimate in Central Alaska Jorgenson, M. Torre; Racine, Charles H.; Walters, James C. Climatic Change, Vol. 48, Issue 4, p. 551-579 https://doi.org/10.1023/A:1005667424292	journal	March 2001
Physical and ecological changes associated with warming permafrost and thermokarst in Interior Alaska Osterkamp, T. E.; Jorgenson, M. T.; Schuur, E. A. G. Permafrost and Periglacial Processes, Vol. 20, Issue 3 https://doi.org/10.1002/ppp.656	journal	July 2009
The amount and timing of precipitation control the magnitude, seasonality and sources ( ¹⁴ C) of ecosystem respiration in a polar semi-desert, northwestern Greenland Lupascu, M.; Welker, J. M.; Seibt, U. Biogeosciences, Vol. 11, Issue 16 https://doi.org/10.5194/bg-11-4289-2014	journal	January 2014
The Effects of Permafrost Thaw on Soil Hydrologic, Thermal, and Carbon Dynamics in an Alaskan Peatland O’Donnell, Jonathan A.; Jorgenson, M. Torre; Harden, Jennifer W. Ecosystems, Vol. 15, Issue 2 https://doi.org/10.1007/s10021-011-9504-0	journal	November 2011
Holocene Carbon Stocks and Carbon Accumulation Rates Altered in Soils Undergoing Permafrost Thaw Hicks Pries, Caitlin E.; Schuur, Edward A. G.; Crummer, K. Grace Ecosystems, Vol. 15, Issue 1 https://doi.org/10.1007/s10021-011-9500-4	journal	November 2011
Nitrogen availability increases in a tundra ecosystem during five years of experimental permafrost thaw Salmon, Verity G.; Soucy, Patrick; Mauritz, Marguerite Global Change Biology, Vol. 22, Issue 5 https://doi.org/10.1111/gcb.13204	journal	February 2016
Drainage enhances modern soil carbon contribution but reduces old soil carbon contribution to ecosystem respiration in tundra ecosystems Kwon, Min Jung; Natali, Susan M.; Hicks Pries, Caitlin E. Global Change Biology, Vol. 25, Issue 4 https://doi.org/10.1111/gcb.14578	journal	February 2019
R2WinBUGS : A Package for Running WinBUGS from R Sturtz, Sibylle; Ligges, Uwe; Gelman, Andrew Journal of Statistical Software, Vol. 12, Issue 3 https://doi.org/10.18637/jss.v012.i03	journal	January 2005
Biomass offsets little or none of permafrost carbon release from soils, streams, and wildfire: an expert assessment Abbott, Benjamin W.; Jones, Jeremy B.; Schuur, Edward A. G. Environmental Research Letters, Vol. 11, Issue 3 https://doi.org/10.1088/1748-9326/11/3/034014	journal	March 2016
Permafrost thaw and resulting soil moisture changes regulate projected high-latitude CO ₂ and CH ₄ emissions Lawrence, D. M.; Koven, C. D.; Swenson, S. C. Environmental Research Letters, Vol. 10, Issue 9 https://doi.org/10.1088/1748-9326/10/9/094011	journal	September 2015
High Arctic wetting reduces permafrost carbon feedbacks to climate warming Lupascu, M.; Welker, J. M.; Seibt, U. Nature Climate Change, Vol. 4, Issue 1 https://doi.org/10.1038/nclimate2058	journal	December 2013
The concentration and isotopic abundances of atmospheric carbon dioxide in rural areas Keeling, Charles D. Geochimica et Cosmochimica Acta, Vol. 13, Issue 4 https://doi.org/10.1016/0016-7037(58)90033-4	journal	January 1958
The BUGS project: Evolution, critique and future directions Lunn, David; Spiegelhalter, David; Thomas, Andrew Statistics in Medicine, Vol. 28, Issue 25 https://doi.org/10.1002/sim.3680	journal	July 2009
Carbon Isotopic Fractionation Does Not Occur during Dark Respiration in C3 and C4 Plants Lin, G.; Ehleringer, J. R. Plant Physiology, Vol. 114, Issue 1 https://doi.org/10.1104/pp.114.1.391	journal	May 1997
Isotope partitioning of soil respiration: A Bayesian solution to accommodate multiple sources of variability: Bayesian isotope partitioning of fluxes Ogle, Kiona; Pendall, Elise Journal of Geophysical Research: Biogeosciences, Vol. 120, Issue 2 https://doi.org/10.1002/2014JG002794	journal	February 2015
Permafrost thaw and soil moisture driving CO ₂ and CH ₄ release from upland tundra Natali, Susan M.; Schuur, Edward A. G.; Mauritz, Marguerite Journal of Geophysical Research: Biogeosciences, Vol. 120, Issue 3 https://doi.org/10.1002/2014JG002872	journal	March 2015
Carbon isotopes in terrestrial ecosystem pools and CO ₂ fluxes Bowling, David R.; Pataki, Diane E.; Randerson, James T. New Phytologist, Vol. 178, Issue 1 https://doi.org/10.1111/j.1469-8137.2007.02342.x	journal	April 2008
The effect of permafrost thaw on old carbon release and net carbon exchange from tundra Schuur, Edward A. G.; Vogel, Jason G.; Crummer, Kathryn G. Nature, Vol. 459, Issue 7246 https://doi.org/10.1038/nature08031	journal	May 2009
Fitting Linear Mixed-Effects Models Using lme4 Bates, Douglas; Mächler, Martin; Bolker, Ben Journal of Statistical Software, Vol. 67, Issue 1 https://doi.org/10.18637/jss.v067.i01	journal	January 2015
Direct observation of permafrost degradation and rapid soil carbon loss in tundra Plaza, César; Pegoraro, Elaine; Bracho, Rosvel Nature Geoscience, Vol. 12, Issue 8 https://doi.org/10.1038/s41561-019-0387-6	journal	July 2019
Carbon Dioxide Capture Using a Zeolite Molecular Sieve Sampling System for Isotopic Studies ( ¹³ C and ¹⁴ C) of Respiration Hardie, S. M. L.; Garnett, M. H.; Fallick, A. E. Radiocarbon, Vol. 47, Issue 3 https://doi.org/10.1017/S0033822200035220	journal	January 2005
Air permeability and trapped-air content in two soils Stonestrom, David A.; Rubin, Jacob Water Resources Research, Vol. 25, Issue 9 https://doi.org/10.1029/WR025i009p01959	journal	September 1989
Using Stable Carbon Isotopes of Seasonal Ecosystem Respiration to Determine Permafrost Carbon Loss Mauritz, M.; Celis, G.; Ebert, C. Journal of Geophysical Research: Biogeosciences, Vol. 124, Issue 1 https://doi.org/10.1029/2018JG004619	journal	January 2019
Estimated stocks of circumpolar permafrost carbon with quantified uncertainty ranges and identified data gaps Hugelius, G.; Strauss, J.; Zubrzycki, S. Biogeosciences, Vol. 11, Issue 23 https://doi.org/10.5194/bg-11-6573-2014	journal	January 2014
sjmisc: Data and Variable Transformation Functions Lüdecke, Daniel Journal of Open Source Software, Vol. 3, Issue 26 https://doi.org/10.21105/joss.00754	journal	June 2018
Permafrost collapse after shrub removal shifts tundra ecosystem to a methane source Nauta, Ake L.; Heijmans, Monique M. P. D.; Blok, Daan Nature Climate Change, Vol. 5, Issue 1 https://doi.org/10.1038/nclimate2446	journal	November 2014
Isotopic composition of carbon dioxide from a boreal forest fire: Inferring carbon loss from measurements and modeling: ISOTOPIC COMPOSITION OF CARBON DIOXIDE FROM A BOREAL FOREST FIRE Schuur, Edward A. G.; Trumbore, Susan E.; Mack, Michelle C. Global Biogeochemical Cycles, Vol. 17, Issue 1 https://doi.org/10.1029/2001GB001840	journal	January 2003
Effects of experimental warming of air, soil and permafrost on carbon balance in Alaskan tundra: WARMING OF ALASKAN TUNDRA Natali, Susan M.; Schuur, Edward A. G.; Trucco, Christian Global Change Biology, Vol. 17, Issue 3 https://doi.org/10.1111/j.1365-2486.2010.02303.x	journal	February 2011
Carbon Thaw Rate Doubles When Accounting for Subsidence in a Permafrost Warming Experiment Rodenhizer, Heidi; Ledman, Justin; Mauritz, Marguerite Journal of Geophysical Research: Biogeosciences, Vol. 125, Issue 6 https://doi.org/10.1029/2019JG005528	journal	June 2020
Carbon respired by terrestrial ecosystems - recent progress and challenges Trumbore, Susan Global Change Biology, Vol. 12, Issue 2 https://doi.org/10.1111/j.1365-2486.2006.01067.x	journal	February 2006
Age of soil Organic Matter and soil Respiration: Radiocarbon Constraints on Belowground c Dynamics Trumbore, Susan Ecological Applications, Vol. 10, Issue 2 https://doi.org/10.1890/1051-0761(2000)010[0399:AOSOMA]2.0.CO;2	journal	April 2000
Increasing rates of retrogressive thaw slump activity in the Mackenzie Delta region, N.W.T., Canada Lantz, Trevor C.; Kokelj, Steven V. Geophysical Research Letters, Vol. 35, Issue 6 https://doi.org/10.1029/2007GL032433	journal	January 2008
TUNDRA CO ₂ FLUXES IN RESPONSE TO EXPERIMENTAL WARMING ACROSS LATITUDINAL AND MOISTURE GRADIENTS Oberbauer, Steven F.; Tweedie, Craig E.; Welker, Jeff M. Ecological Monographs, Vol. 77, Issue 2 https://doi.org/10.1890/06-0649	journal	May 2007
Factors Limiting Seasonal Growth and Peak Biomass Accumulation in Eriophorum Vaginatum in Alaskan Tussock Tundra Shaver, G. R.; Iii, F. Chapin; Gartner, Barbara L. The Journal of Ecology, Vol. 74, Issue 1 https://doi.org/10.2307/2260362	journal	March 1986
Radiocarbon Content of CO ₂ Respired from High Arctic Tundra in Northwest Greenland Czimczik, Claudia I.; Welker, Jeffrey M. Arctic, Antarctic, and Alpine Research, Vol. 42, Issue 3 https://doi.org/10.1657/1938-4246-42.3.342	journal	August 2010
Plant Species Composition and Productivity following Permafrost Thaw and Thermokarst in Alaskan Tundra Schuur, Edward A. G.; Crummer, Kathryn G.; Vogel, Jason G. Ecosystems, Vol. 10, Issue 2 https://doi.org/10.1007/s10021-007-9024-0	journal	March 2007
A global relationship between the heterotrophic and autotrophic components of soil respiration? Bond-Lamberty, Ben; Wang, Chuankuan; Gower, Stith T. Global Change Biology, Vol. 10, Issue 10 https://doi.org/10.1111/j.1365-2486.2004.00816.x	journal	October 2004
THE RESPONSE OF TUNDRA PLANT BIOMASS, ABOVEGROUND PRODUCTION, NITROGEN, AND CO ₂ FLUX TO EXPERIMENTAL WARMING Hobbie, Sarah E.; Chapin, F. Stuart Ecology, Vol. 79, Issue 5 https://doi.org/10.1890/0012-9658(1998)079[1526:TROTPB]2.0.CO;2	journal	July 1998
Long-term drainage reduces CO ₂ uptake and increases CO ₂ emission on a Siberian floodplain due to shifts in vegetation community and soil thermal characteristics Kwon, Min Jung; Heimann, Martin; Kolle, Olaf Biogeosciences, Vol. 13, Issue 14 https://doi.org/10.5194/bg-13-4219-2016	journal	January 2016
Evidence for warming and thawing of discontinuous permafrost in Alaska Osterkamp, T. E.; Romanovsky, V. E. Permafrost and Periglacial Processes, Vol. 10, Issue 1 https://doi.org/10.1002/(SICI)1099-1530(199901/03)10:1<17::AID-PPP303>3.0.CO;2-4	journal	January 1999
Nonlinear CO ₂ flux response to 7 years of experimentally induced permafrost thaw Mauritz, Marguerite; Bracho, Rosvel; Celis, Gerardo Global Change Biology, Vol. 23, Issue 9 https://doi.org/10.1111/gcb.13661	journal	March 2017
¹⁴ C Background Levels in An Accelerator Mass Spectrometry System Vogel, J. S.; Nelson, D. E.; Southon, J. R. Radiocarbon, Vol. 29, Issue 3 https://doi.org/10.1017/S0033822200043733	journal	January 1987
Reconciling Carbon-cycle Concepts, Terminology, and Methods Chapin, F. S.; Woodwell, G. M.; Randerson, J. T. Ecosystems, Vol. 9, Issue 7 https://doi.org/10.1007/s10021-005-0105-7	journal	November 2006
Old soil carbon losses increase with ecosystem respiration in experimentally thawed tundra Hicks Pries, Caitlin E.; Schuur, Edward A. G.; Natali, Susan M. Nature Climate Change, Vol. 6, Issue 2 https://doi.org/10.1038/nclimate2830	journal	October 2015
Thawing permafrost increases old soil and autotrophic respiration in tundra: Partitioning ecosystem respiration using δ ¹³ C and ∆ ¹⁴ C Hicks Pries, Caitlin E.; Schuur, Edward A. G.; Crummer, Kathryn G. Global Change Biology, Vol. 19, Issue 2 https://doi.org/10.1111/gcb.12058	journal	November 2012
Thaw pond development and initial vegetation succession in experimental plots at a Siberian lowland tundra site Li, Bingxi; Heijmans, Monique M. P. D.; Blok, Daan Plant and Soil, Vol. 420, Issue 1-2 https://doi.org/10.1007/s11104-017-3369-8	journal	August 2017
Respiration of aged soil carbon during fall in permafrost peatlands enhanced by active layer deepening following wildfire but limited following thermokarst Estop-Aragonés, Cristian; Czimczik, Claudia I.; Heffernan, Liam Environmental Research Letters, Vol. 13, Issue 8 https://doi.org/10.1088/1748-9326/aad5f0	journal	August 2018
Bayesian measures of model complexity and fit Spiegelhalter, David J.; Best, Nicola G.; Carlin, Bradley P. Journal of the Royal Statistical Society: Series B (Statistical Methodology), Vol. 64, Issue 4 https://doi.org/10.1111/1467-9868.00353	journal	October 2002
Responses of soil heterotrophic respiration to moisture availability: An exploration of processes and models Moyano, Fernando E.; Manzoni, Stefano; Chenu, Claire Soil Biology and Biochemistry, Vol. 59 https://doi.org/10.1016/j.soilbio.2013.01.002	journal	April 2013
Feedback and Modularization in a Bayesian Meta–analysis of Tree Traits Affecting Forest Dynamics Ogle, Kiona; Barber, Jarrett; Sartor, Karla Bayesian Analysis, Vol. 8, Issue 1 https://doi.org/10.1214/13-BA806	journal	March 2013
Recovery of submilligram quantities of carbon dioxide from gas streams by molecular sieve for subsequent determination of isotopic carbon-13 and carbon-14 natural abundances Bauer, James E.; Williams, Peter M.; Druffel, Ellen R. M. Analytical Chemistry, Vol. 64, Issue 7 https://doi.org/10.1021/ac00031a024	journal	April 1992
Increased plant productivity in Alaskan tundra as a result of experimental warming of soil and permafrost: Increased plant productivity in Alaskan tundra Natali, Susan M.; Schuur, Edward A. G.; Rubin, Rachel L. Journal of Ecology, Vol. 100, Issue 2 https://doi.org/10.1111/j.1365-2745.2011.01925.x	journal	November 2011
Discussion Reporting of ¹⁴ C Data Stuiver, Minze; Polach, Henry A. Radiocarbon, Vol. 19, Issue 3 https://doi.org/10.1017/S0033822200003672	journal	January 1977
Partitioning sources of soil respiration in boreal black spruce forest using radiocarbon Schuur, Edward A. G.; Trumbore, Susan E. Global Change Biology, Vol. 12, Issue 2 https://doi.org/10.1111/j.1365-2486.2005.01066.x	journal	February 2006
Radiocarbon Nomenclature, Theory, Models, and Interpretation: Measuring Age, Determining Cycling Rates, and Tracing Source Pools Trumbore, S. E.; Sierra, C. A.; Hicks Pries, C. E. Radiocarbon and Climate Change https://doi.org/10.1007/978-3-319-25643-6_3	book	January 2016
The effects of water table manipulation and elevated temperature on the net CO ₂ flux of wet sedge tundra ecosystems Oechel, Walter C.; Vourlitis, George L.; Hastings, Steven J. Global Change Biology, Vol. 4, Issue 1 https://doi.org/10.1046/j.1365-2486.1998.00110.x	journal	January 1998
Carbon respiration from subsurface peat accelerated by climate warming in the subarctic Dorrepaal, Ellen; Toet, Sylvia; van Logtestijn, Richard S. P. Nature, Vol. 460, Issue 7255 https://doi.org/10.1038/nature08216	journal	July 2009
Soil moisture-temperature relationships: results from two field experiments Lakshmi, Venkat; Jackson, Thomas J.; Zehrfuhs, Diane Hydrological Processes, Vol. 17, Issue 15 https://doi.org/10.1002/hyp.1275	journal	January 2003
Soil organic carbon pools in the northern circumpolar permafrost region: SOIL ORGANIC CARBON POOLS Tarnocai, C.; Canadell, J. G.; Schuur, E. A. G. Global Biogeochemical Cycles, Vol. 23, Issue 2 https://doi.org/10.1029/2008GB003327	journal	June 2009

Similar Records

Investigating Thaw and Plant Productivity Constraints on Old Soil Carbon Respiration From Permafrost

Journal Article · Wed Jun 02 00:00:00 EDT 2021 · Journal of Geophysical Research. Biogeosciences · OSTI ID:1834570

Mauritz, Marguerite; Pegoraro, Elaine; Ogle, Kiona; +2 more

Using Stable Carbon Isotopes of Seasonal Ecosystem Respiration to Determine Permafrost Carbon Loss

Journal Article · Wed Dec 19 00:00:00 EST 2018 · Journal of Geophysical Research. Biogeosciences · OSTI ID:1834570

Mauritz, M.; Celis, G.; Ebert, C.; +8 more

Drainage enhances modern soil carbon contribution but reduces old soil carbon contribution to ecosystem respiration in tundra ecosystems

Journal Article · Mon Feb 25 00:00:00 EST 2019 · Global Change Biology · OSTI ID:1834570

Kwon, Min Jung; Natali, Susan M.; Hicks Pries, Caitlin E.; +8 more

Related Subjects

54 ENVIRONMENTAL SCIENCES
climate change feedback
dual-carbon isotope mixing model
ecosystem respiration
permafrost
radiocarbon
thermokarst

Title: Lower soil moisture and deep soil temperatures in thermokarst features increase old soil carbon loss after 10 years of experimental permafrost warming

Citation Formats

References (77)

Similar Records

Related Subjects