Abstract
Background and aims
Organic matter decomposition in response to thawing permafrost has critical implications for carbon release. This study examined how thaw induced plant community and environmental changes influenced litter and peat decomposition in a subarctic peatland.
Methods
We conducted laboratory incubations under current site pre-thaw (dry and large oxic peat layer) and thawed (wet and small oxic peat layer) conditions, and mimiced pond thaw conditions (water saturated and anoxic) at 4 and 22 °C. Carbon dioxide (CO2) and methane (CH4) releases from ground surface plant litter and top 1 m peat samples at permafrost area (Palsa) and wet thawed lawn (WL) were quantified under current site conditions. Dissolved organic carbon (DOC) released from litter was additionally quantified under pond thaw conditions.
Results
Plant litter mass significantly increased from Palsa to WL. Under current site conditions, litter in WL had significantly higher CO2 and CH4 production rates than litter in Palsa. Pond thaw conditions changed litter carbon loss partitioning into lower CO2 but higher DOC and CH4 production, and increased total carbon release. Whole peat decomposition was restricted from Palsa to WL with thaw. Estimated growing season gas carbon loss (CO2 and CH4) in WL was greater than that in Palsa due to significantly increased litter carbon loss after thaw.
Conclusions
Changes in organic matter decomposition, especially litter decomposition, enlarged carbon losses from this subarctic peatland with permafrost thaw.
Similar content being viewed by others
References
Alewell C, Giesler R, Klaminder J, Leifeld J, Rollog M (2011) Stable carbon isotopes as indicators for environmental change in palsa peats. Biogeosciences 8:1769–1778
Allison SD, Wallenstein MD, Bradford MA (2010) Soil-carbon response to warming dependent on microbial physiology. Nat Geosci 3:336–340
Baldrian P, Merhautova V, Petrankova M, Cajthaml T, Snajdr J (2010) Distribution of microbial biomass and activity of extracellular enzymes in a hardwood forest soil reflect soil moisture content. Appl Soil Ecol 46:177–182
Bengtson P, Bengtsson G (2007) Rapid turnover of DOC in temperate forests accounts for increased CO2 production at elevated temperatures. Ecol Lett 10:783–790
Bhiry N, Robert EC (2006) Reconstruction of changes in vegetation and trophic conditions of a palsa in a permafrost peatland, subarctic Quebec, Canada. Ecoscience 13:56–65
Bhiry N, Delwaide A, Allard M, Bégin Y, Filion L, Lavoie M, Nozais C, Payette S, Pienitz R, Saulnier-Talbot É, Vincent WF (2011) Environmental change in the great Whale River region, Hudson Bay: five decades of multidisciplinary research by Centre d'études Nordiques (CEN). Ecoscience 18:182–203
Blodau C, Basiliko N, Moore TR (2004) Carbon turnover in peatland mesocosms exposed to different water table levels. Biogeochemistry 67:331–351
Bracho R, Natali S, Pegoraro E, Crummer KG, Schädel C, Celis G, Hale L, Wu L, Yin H, Tiedje JM, Konstantinidis KT, Luo Y, Zhou J, Schuur EAG (2016) Temperature sensitivity of organic matter decomposition of permafrost-region soils during laboratory incubations. Soil Biol Biochem 97:1–14
Bridgham SD, Cadillo-Quiroz H, Keller JK, Zhuang QL (2013) Methane emissions from wetlands: biogeochemical, microbial, and modeling perspectives from local to global scales. Glob Chang Biol 19:1325–1346
Bubier JL, Frolking S, Crill PM, Linder E (1999) Net ecosystem productivity and its uncertainty in a diverse boreal peatland. J Geophys Res-Atmos 104:27683–27692
Camill P (1999) Patterns of boreal permafrost peatland vegetation across environmental gradients sensitive to climate warming. Canadian Journal of Botany-Revue Canadienne De Botanique 77:721–733
Camill P (2005) Permafrost thaw accelerates in boreal peatlands during late-20th century climate warming. Clim Chang 68:135–152
Camill P, Lynch JA, Clark JS, Adams JB, Jordan B (2001) Changes in biomass, aboveground net primary production, and peat accumulation following permafrost thaw in the boreal peatlands of Manitoba, Canada. Ecosystems 4:461–478
Chow AT, Tanji KK, Gao SD, Dahlgren RA (2006) Temperature, water content and wet-dry cycle effects on DOC production and carbon mineralization in agricultural peat soils. Soil Biol Biochem 38:477–488
Clare JT, Johnson D, Artz RRE (2009) Litter type, but not plant cover, regulates initial litter decomposition and fungal community structure in a recolonising cutover peatland. Soil Biol Biochem 41:651–655
Clymo RS (1984) The limits to peat bog growth. Philosophical Transactions of the Royal Society of London Series B-Biological Sciences 303:605–654
Conant RT, Steinweg JM, Haddix ML, Paul EA, Plante AF, Six J (2008) Experimental warming shows that decomposition temperature sensitivity increases with soil organic matter recalcitrance. Ecology 89:2384–2391
Cotrufo MF, Soong JL, Horton AJ, Campbell EE, Haddix ML, Wall DH, Parton AJ (2015) Formation of soil organic matter via biochemical and physical pathways of litter mass loss. Nat Geosci 8:776–799
Cusack DF (2013) Soil nitrogen levels are linked to decomposition enzyme activities along an urban-remote tropical forest gradient. Soil Biol Biochem 57:192–203
Dijkstra FA, Cheng W (2007) Moisture modulates rhizosphere effects on C decomposition in two different soil types. Soil Biol Biochem 39:2264–2274
Ding J, Chen L, Zhang B, Liu L, Yang G, Fang K, Chen Y, Li F, Kou D, Ji C, Luo Y, Yang Y (2016) Linking temperature sensitivity of soil CO2 release to substrate, environmental, and microbial properties across alpine ecosystems. Glob Biogeochem Cycles 30:1310–1323
Don A, Kalbitz K (2005) Amounts and degradability of dissolved organic carbon from foliar litter at different decomposition stages. Soil Biol Biochem 37:2171–2179
Dorrepaal E, Cornelissen JHC, Aerts R, Wallen B, Van Logtestijn RSP (2005) Are growth forms consistent predictors of leaf litter quality and decomposability across peatlands along a latitudinal gradient? J Ecol 93:817–828
Dorrepaal E, Toet S, van Logtestijn RSP, Swart E, van de Weg MJ, Callaghan TV, Aerts R (2009) Carbon respiration from subsurface peat accelerated by climate warming in the subarctic. Nature 460:616–619
Drake TW, Wickland KP, Spencer RGM, McKnight DM, Striegl RG (2015) Ancient low–molecular-weight organic acids in permafrost fuel rapid carbon dioxide production upon thaw. Proc Natl Acad Sci 112:13946–13951
Elberling B, Michelsen A, Schadel C, Schuur EAG, Christiansen HH, Berg L, Tamstorf MP, Sigsgaard C (2013) Long-term CO2 production following permafrost thaw. Nature Clim Change 3:890–894
Erhagen B, Öquist M, Sparrman T, Haei M, Ilstedt U, Hedenström M, Schleucher J, Nilsson MB (2013) Temperature response of litter and soil organic matter decomposition is determined by chemical composition of organic material. Glob Chang Biol 19:3858–3871
Euskirchen ES, Edgar CW, Turetsky MR, Waldrop MP, Harden JW (2014) Differential response of carbon fluxes to climate in three peatland ecosystems that vary in the presence and stability of permafrost. Journal of Geophysical Research: Biogeosciences 119:1576–1595
Fang CM, Smith P, Moncrieff JB, Smith JU (2005) Similar response of labile and resistant soil organic matter pools to changes in temperature. Nature 433:57–59
Fierer N, Craine JM, McLauchlan K, Schimel JP (2005) Litter quality and the temperature sensitivity of decomposition. Ecology 86:320–326
Finger RA, Turetsky MR, Kielland K, Ruess RW, Mack MC, Euskirchen ES (2016) Effects of permafrost thaw on nitrogen availability and plant-soil interactions in a boreal Alaskan lowland. J Ecol 104:1542–1554
Frolking S, Roulet NT, Moore TR, Richard PJH, Lavoie M, Muller SD (2001) Modeling northern peatland decomposition and peat accumulation. Ecosystems 4:479–498
Frolking S, Roulet NT, Moore TR, Lafleur PM, Bubier JL, Crill PM (2002) Modeling seasonal to annual carbon balance of Mer Bleue Bog, Ontario. Canada Global Biogeochem Cycles 16:1030
Grosse G, Harden J, Turetsky M, McGuire AD, Camill P, Tarnocai C, Frolking S, Schuur EAG, Jorgenson T, Marchenko S, Romanovsky V, Wickland KP, French N, Waldrop M, Bourgeau-Chavez L, Striegl RG (2011) Vulnerability of high-latitude soil organic carbon in North America to disturbance. J Geophys Res 116. doi:10.1029/2010JG001507
Herndon EM, Mann BF, Roy Chowdhury T, Yang Z, Wullschleger SD, Graham D, Liang L, Gu B (2015) Pathways of anaerobic organic matter decomposition in tundra soils from Barrow, Alaska. Journal of Geophysical Research: Biogeosciences 120:2345–2359
Hicks Pries CE, van Logtestijn RSP, Schuur EAG, Natali SM, Cornelissen JHC, Aerts R, Dorrepaal E (2015) Decadal warming causes a consistent and persistent shift from heterotrophic to autotrophic respiration in contrasting permafrost ecosystems. Glob Chang Biol 21:4508–4519
Hobbie SE (1996) Temperature and plant species control over litter decomposition in Alaskan tundra. Ecol Monogr 66:503–522
Hobbie SE, Chapin FS (1996) Winter regulation of tundra litter carbon and nitrogen dynamics. Biogeochemistry 35:327–338
Hodgkins, S. B., M. M. Tfaily, C. K. McCalley, T. A. Logan, P. M. Crill, S. R. Saleska, V. I. Rich, and J. P. Chanton (2014) Changes in peat chemistry associated with permafrost thaw increase greenhouse gas production. Proceedings of the National Academy of Sciences:doi:10.1073/pnas.1314641111
Hugelius G, Strauss J, Zubrzycki S, Harden JW, Schuur EAG, Ping CL, Schirrmeister L, Grosse G, Michaelson GJ, Koven CD, O'Donnell JA, Elberling B, Mishra U, Camill P, Yu Z, Palmtag J, Kuhry P (2014) Estimated stocks of circumpolar permafrost carbon with quantified uncertainty ranges and identified data gaps. Biogeosciences 11:6573–6593
IPCC (2013) Near-term climate change: projections and predictability. In: Climate change 2013: the physical science basis. Cambridge University Press, Cambridge and New York, pp 953–1028
Kalbitz K, Schmerwitz J, Schwesig D, Matzner E (2003a) Biodegradation of soil-derived dissolved organic matter as related to its properties. Geoderma 113:273–291
Kalbitz K, Schwesig D, Schmerwitz J, Kaiser K, Haumaier L, Glaser B, Ellerbrock R, Leinweber P (2003b) Changes in properties of soil-derived dissolved organic matter induced by biodegradation. Soil Biol Biochem 35:1129–1142
Kawahigashi M, Kaiser K, Kalbitz K, Rodionov A, Guggenberger G (2004) Dissolved organic matter in small streams along a gradient from discontinuous to continuous permafrost. Glob Chang Biol 10:1576–1586
Kim Y, Ullah S, Moore T, Roulet N (2014) Dissolved organic carbon and total dissolved nitrogen production by boreal soils and litter: the role of flooding, oxygen concentration, and temperature. Biogeochemistry 118:35–48
Klein ES, Yu Z, Booth RK (2013) Recent increase in peatland carbon accumulation in a thermokarst lake basin in southwestern Alaska. Palaeogeogr Palaeoclimatol Palaeoecol 392:186–195
Krab EJ, Berg MP, Aerts R, van Logtestijn RSP, Cornelissen JHC (2013) Vascular plant litter input in subarctic peat bogs changes Collembola diets and decomposition patterns. Soil Biol Biochem 63:106–115
Krüger JP, Leifeld J, Alewell C (2014) Degradation changes stable carbon isotope depth profiles in palsa peatlands. Biogeosciences 11:3369–3380
Lamarre A, Garneau M, Asnong H (2012) Holocene paleohydrological reconstruction and carbon accumulation of a permafrost peatland using testate amoeba and macrofossil analyses, Kuujjuarapik, subarctic Quebec, Canada. Rev Palaeobot Palynol 186:131–141
Lang SI, Cornelissen JHC, Klahn T, van Logtestijn RSP, Broekman R, Schweikert W, Aerts R (2009) An experimental comparison of chemical traits and litter decomposition rates in a diverse range of subarctic bryophyte, lichen and vascular plant species. J Ecol 97:886–900
Lee H, Schuur EAG, Inglett KS, Lavoie M, Chanton JP (2012) The rate of permafrost carbon release under aerobic and anaerobic conditions and its potential effects on climate. Glob Chang Biol 18:515–527
Lloyd J, Taylor JA (1994) On the temperature-dependence of soil respiration. Funct Ecol 8:315–323
Loisel J, Yu Z (2013) Recent acceleration of carbon accumulation in a boreal peatland, south central Alaska. Journal of Geophysical Research: Biogeosciences 118:41–53
Malhotra A. 2016. Relating Self-regulation with Ecosystem Structure and Function in Northern Peatlands. Pages: 43–52. Biogeosciences. McGill University. Montreal. Quebec. Canada
Malmer N, Johansson T, Olsrud M, Christensen TR (2005) Vegetation, climatic changes and net carbon sequestration in a north-Scandinavian subarctic mire over 30 years. Glob Chang Biol 11:1895–1909
Moore TR, Dalva M (2001) Some controls on the release of dissolved organic carbon by plant tissues and soils. Soil Sci 166:38–47
Moore TR, Bubier JL, Bledzki L (2007) Litter decomposition in temperate peatland ecosystems: the effect of substrate and site. Ecosystems 10:949–963
Moore TR, Paré D, Boutin R (2008) Production of dissolved organic carbon in Canadian forest soils. Ecosystems 11:740–751
Neff JC, Hooper DU (2002) Vegetation and climate controls on potential CO2, DOC and DON production in northern latitude soils. Glob Chang Biol 8:872–884
Nykanen, H., J. E. P. Heikkinen, L. Pirinen, K. Tiilikainen, and P. J. Martikainen. 2003. Annual CO2 exchange and CH4 fluxes on a subarctic palsa mire during climatically different years. Global Biogeochemical Cycles 17:doi:10.1029/2002GB001861
O’Donnell JA, Jorgenson MT, Harden JW, McGuire AD, Kanevskiy MZ, Wickland KP (2011) The effects of permafrost thaw on soil hydrologic, thermal, and carbon dynamics in an Alaskan peatland. Ecosystems 15:213–229
Olefeldt D, Roulet NT (2012) Effects of permafrost and hydrology on the composition and transport of dissolved organic carbon in a subarctic peatland complex. J Geophys Res Biogeosci 117. doi:10.1029/2011JG001819
Osono T, Azuma J, Hirose D (2014) Plant species effect on the decomposition and chemical changes of leaf litter in grassland and pine and oak forest soils. Plant Soil 376:411–421
Payette S (2004) Accelerated thawing of subarctic peatland permafrost over the last 50 years. Geophys Res Lett 31. doi:10.1029/2004GL020358
Peuravuori J, Pihlaja K (1997) Molecular size distribution and spectroscopic properties of aquatic humic substances. Anal Chim Acta 337:133–149
Pries CEH, Schuur EAG, Crummer KG (2013) Thawing permafrost increases old soil and autotrophic respiration in tundra: partitioning ecosystem respiration using Delta C-13 and Delta C-14. Glob Chang Biol 19:649–661
Prokushkin AS, Gleixner G, McDowell WH, Ruehlow S, Schulze ED (2007) Source- and substrate-specific export of dissolved organic matter from permafrost-dominated forested watershed in central Siberia. Glob Biogeochem Cycles 21. doi:10.1029/2007GB002938
Qualls RG (2005) Biodegradability of dissolved organic from decomposing fractions of carbon leached leaf litter. Environmental Science & Technology 39:1616–1622
Quested HM, Callaghan TV, Cornelissen JHC, Press MC (2005) The impact of hemiparasitic plant litter on decomposition: direct, seasonal and litter mixing effects. J Ecol 93:87–98
Roy Chowdhury T, Herndon EM, Phelps TJ, Elias DA, Gu B, Liang L, Wullschleger SD, Graham DE (2014) Stoichiometry and temperature sensitivity of methanogenesis and CO2 production from saturated polygonal tundra in Barrow, Alaska. Glob Chang Biol 21. doi:10.1111/gcb.12762
Schimel J, Balser TC, Wallenstein M (2007) Microbial stress-response physiology and its implications for ecosystem function. Ecology 88:1386–1394
Schreeg LA, Mack MC, Turner BL (2013) Nutrient-specific solubility patterns of leaf litter across 41 lowland tropical woody species. Ecology 94:94–105
Schuur EAG, Crummer KG, Vogel JG, Mack MC (2007) Plant species composition and productivity following permafrost thaw and Thermokarst in Alaskan tundra. Ecosystems 10:280–292
Schuur EAG, Bockheim J, Canadell JG, Euskirchen E, Field CB, Goryachkin SV, Hagemann S, Kuhry P, Lafleur PM, Lee H, Mazhitova G, Nelson FE, Rinke A, Romanovsky VE, Shiklomanov N, Tarnocai C, Venevsky S, Vogel JG, Zimov SA (2008) Vulnerability of permafrost carbon to climate change: implications for the global carbon cycle. Bioscience 58:701–714
Schuur EAG, Vogel JG, Crummer KG, Lee H, Sickman JO, Osterkamp TE (2009) The effect of permafrost thaw on old carbon release and net carbon exchange from tundra. Nature 459:556–559
Schuur EAG, McGuire AD, Schadel C, Grosse G, Harden JW, Hayes DJ, Hugelius G, Koven CD, Kuhry P, Lawrence DM, Natali SM, Olefeldt D, Romanovsky VE, Schaefer K, Turetsky MR, Treat CC, Vonk JE (2015) Climate change and the permafrost carbon feedback. Nature 520:171–179
Seppälä M (2011) Synthesis of studies of palsa formation underlining the importance of local environmental and physical characteristics. Quat Res 75:366–370
Sharratt BS (1992) Growing-season trends in the Alaskan climate record. Arctic 45:124–127
Sistla SA, Moore JC, Simpson RT, Gough L, Shaver GR, Schimel JP (2013) Long-term warming restructures Arctic tundra without changing net soil carbon storage. Nature 497:615–618
Smith LC, Sheng YW, MacDonald GM (2007) A first pan-Arctic assessment of the influence of glaciation, permafrost, topography and peatlands on northern hemisphere lake distribution. Permafr Periglac Process 18:201–208
Steinweg JM, Dukes JS, Wallenstein MD (2012) Modeling the effects of temperature and moisture on soil enzyme activity: linking laboratory assays to continuous field data. Soil Biol Biochem 55:85–92
Suseela V, Tharayil N, Xing BS, Dukes JS (2014) Warming alters potential enzyme activity but precipitation regulates chemical transformations in grass litter exposed to simulated climatic changes. Soil Biol Biochem 75:102–112
Tarnocai C, Canadell JG, Schuur EAG, Kuhry P, Mazhitova G, Zimov S (2009) Soil organic carbon pools in the northern circumpolar permafrost region. Glob Biogeochem Cycles 23. doi:10.1029/2008GB003327
Thormann MN, Bayley SE, Currah RS (2001) Comparison of decomposition of belowground and aboveground plant litters in peatlands of boreal Alberta, Canada. Canadian Journal of Botany-Revue Canadienne De Botanique 79:9–22
Torres PA, Abril AB, Bucher EH (2005) Microbial succession in litter decomposition in the semi-arid Chaco woodland. Soil Biol Biochem 37:49–54
Treat CC, Frolking S (2013) Carbon storage: a permafrost carbon bomb? Nature Clim. Change 3:865–867
Treat CC, Wollheim WM, Varner RK, Grandy AS, Talbot J, Frolking S (2014) Temperature and peat type control CO2 and CH4 production in Alaskan permafrost peats. Glob Chang Biol 20:2674–2686
Turetsky MR (2004) Decomposition and organic matter quality in continental peatlands: the ghost of permafrost past. Ecosystems 7:740–750
Turetsky MR, Wieder RK, Williams CJ, Vitt DH (2000) Organic matter accumulation, peat chemistry, and permafrost melting in peatlands of boreal Alberta. Ecoscience 7:379–392
Turetsky MR, Wieder RK, Vitt DH, Evans RJ, Scott KD (2007) The disappearance of relict permafrost in boreal north America: effects on peatland carbon storage and fluxes. Glob Chang Biol 13:1922–1934
Vallée S, Payette S (2007) Collapse of permafrost mounds along a subarctic river over the last 100 years (northern Québec). Geomorphology 90:162–170
Van Meeteren MJM, Tietema A, Westerveld JW (2007) Regulation of microbial carbon, nitrogen, and phosphorus transformations by temperature and moisture during decomposition of Calluna vulgaris litter. Biol Fertil Soils 44:103–112
Verhoeven JTA, Toth E (1995) Decomposition of Carex and Sphagnum litter in fens - effect of litter quality and inhibition by living tissue-homogenates. Soil Biol Biochem 27:271–275
Waldrop MP, Wickland KP, White R, Berhe AA, Harden JW, Romanovsky VE (2010) Molecular investigations into a globally important carbon pool: permafrost-protected carbon in Alaskan soils. Glob Chang Biol 16:2543–2554
Wang ZH, Xu WY (2013) Decomposition-rate estimation of leaf litter in karst forests in China based on a mathematical model. Plant Soil 367:563–577
Weishaar JL, Aiken GR, Bergamaschi BA, Fram MS, Fujii R, Mopper K (2003) Evaluation of specific ultraviolet absorbance as an indicator of the chemical composition and reactivity of dissolved organic carbon. Environmental Science & Technology 37:4702–4708
Wickland KP, Neff JC, Aiken GR (2007) Dissolved organic carbon in Alaskan boreal forest: sources, chemical characteristics, and biodegradability. Ecosystems 10:1323–1340
Wu DD, Li TT, Wan SQ (2013) Time and litter species composition affect litter-mixing effects on decomposition rates. Plant Soil 371:355–366
Acknowledgements
We thank Claude Tremblay, Warwick F. Vincent, Najat Bhiry and Denis Sarrazin and the Centre des e’etudes norique for field support and site access. Mike Dalva provded laboratory and technical assistances, particularly in the preparation of equipment for use in the field. Kristina Disney and Paul Wilson helped to prepare field instruments and assisted with field research. Youngil Kim provided advices of laboratory incubations. Tim Moore made numerous suggestions on data analysis, and interpretations of results. Alexandre Lamarre and Michelle Garneau kindly shared their peat carbon density data in palsa and permafrost thaw areas. ZW received financial assistance from a Ph.D. fellowship by Chinese Scholarship Council, and recruitment and foreign student differential fee scholarships from Department of Geography, McGill University. This research was supported by a Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Frontiers grant for ADAPT project (411351), and a NSERC DG grant (RGPIN 153450-12) to NTR.
Author information
Authors and Affiliations
Corresponding author
Additional information
Responsible Editor: Hans Lambers.
Electronic supplementary material
Online Resource 1
Figure 1 Aboveground biomass composition of plant functional types in Palsa and WL. (PDF 148 kb)
Online Resource 2
Table 1 Characteristics of incubated organic matter. (PDF 81 kb)
Online Resource 3
Figure 2 Peat temperature variations at 5, 10, 20, 50 and 100 (90) cm in WL and Palsa in growing season 2013 and 2014. (PDF 194 kb)
Rights and permissions
About this article
Cite this article
Wang, Z., Roulet, N. Comparison of plant litter and peat decomposition changes with permafrost thaw in a subarctic peatland. Plant Soil 417, 197–216 (2017). https://doi.org/10.1007/s11104-017-3252-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11104-017-3252-7