Biogeochemistry

, Volume 114, Issue 1–3, pp 213–223 | Cite as

Radiocarbon dating of methane and carbon dioxide evaded from a temperate peatland stream

  • M. H. Garnett
  • S. M. L. Hardie
  • C. Murray
  • M. F. Billett
Article

Abstract

Streams draining peatlands export large quantities of carbon in different chemical forms and are an important part of the carbon cycle. Radiocarbon (14C) analysis/dating provides unique information on the source and rate that carbon is cycled through ecosystems, as has recently been demonstrated at the air–water interface through analysis of carbon dioxide (CO2) lost from peatland streams by evasion (degassing). Peatland streams also have the potential to release large amounts of methane (CH4) and, though 14C analysis of CH4 emitted by ebullition (bubbling) has been previously reported, diffusive emissions have not. We describe methods that enable the 14C analysis of CH4 evaded from peatland streams. Using these methods, we investigated the 14C age and stable carbon isotope composition of both CH4 and CO2 evaded from a small peatland stream draining a temperate raised mire. Methane was aged between 1617 and 1987 years BP, and was much older than CO2 which had an age range of 303–521 years BP. Isotope mass balance modelling of the results indicated that the CO2 and CH4 evaded from the stream were derived from different source areas, with most evaded CO2 originating from younger layers located nearer the peat surface compared to CH4. The study demonstrates the insight that can be gained into peatland carbon cycling from a methodological development which enables dual isotope (14C and 13C) analysis of both CH4 and CO2 collected at the same time and in the same way.

Keywords

Radiocarbon Methane Carbon dioxide Peatland Evasion 

Notes

Acknowledgments

We thank staff at the NERC Radiocarbon Facility and SUERC AMS Facility. We are grateful to NERC for funding radiocarbon analyses, and to John Hawell and South Lanarkshire District Council for permission to use the study site.

References

  1. Aufdenkampe AK, Mayorga E, Raymond PA, Melack JM, Doney SC, Alin SR, Aalto RE, Yoo K (2011) Riverine coupling of biogeochemical cycles between land, oceans, and atmosphere. Front Ecol Environ 9(1):53–60CrossRefGoogle Scholar
  2. Billett MF, Garnett MH (2010) Isotopic composition of carbon dioxide lost by evasion from surface water to the atmosphere: methodological comparison of a direct and indirect approach. Limnol Oceanogr Methods 8:45–53CrossRefGoogle Scholar
  3. Billett MF, Harvey FH (In press) Measurements of CO2 and CH4 evasion from UK peatland headwater streams. Biogeochemistry. doi: 10.1007/s10533-012-9798-9
  4. Billett MF, Moore T (2008) Supersaturation and evasion of CO2 and CH4 in surface waters at Mer Bleue peatland, Canada. Hydrol Process 22(12):2044–2054CrossRefGoogle Scholar
  5. Billett MF, Garnett MH, Hardie SML (2006) A direct method to measure 14CO2 lost by evasion from surface waters. Radiocarbon 48(1):61–68Google Scholar
  6. Billett MF, Garnett MH, Harvey F (2007) UK peatland streams release old carbon dioxide to the atmosphere and young dissolved organic carbon to rivers. Geophys Res Lett 34:L23401. doi: 10.21029/22007GL031797 CrossRefGoogle Scholar
  7. Billett MF, Dinsmore KJ, Smart RP, Garnett MH, Holden J, Chapman P, Baird AJ, Grayson R, Stott AW (2012) Variable source and age of different forms of carbon released from natural peatland pipes. J Geophys Res 117:G02003. doi: 10.01029/02011JG001807 CrossRefGoogle Scholar
  8. Billett MF, Garnett MH, Dinsmore KJ, Dyson KE, Harvey F, Thomson AM, Piirainen S, Kortelainen P (In press) Age and source of different forms of carbon released from boreal peatland streams during spring snowmelt in E. Finland. Biogeochemistry. doi: 10.1007/s10533-011-9645-4
  9. Chanton JP, Bauer JE, Glaser PA, Siegel DI, Kelley CA, Tyler SC, Romanowicz EH, Lazrus A (1995) Radiocarbon evidence for the substrates supporting methane formation within northern Minnesota peatlands. Geochim Cosmochim Acta 59:3663–3668CrossRefGoogle Scholar
  10. Chanton J, Glaser PH, Chasar L, Burdige D, Hines M, Siegel DI, Tremblay L, Cooper W (2008) Radiocarbon evidence for the importance of surface vegetation on fermentation and methanogenesis in contrasting types of boreal peatlands. Glob Biogeochem Cycl 22:GB4022. doi: 10.1029/2008GB003274 CrossRefGoogle Scholar
  11. Chasar L, Chanton J, Glaser PH, Siegel DI, Rivers J (2000) Radiocarbon and stable carbon evidence for transport and transformation of dissolved organic carbon, dissolved inorganic carbon, and CH4 in a northern Minnesota peatland. Glob Biogeochem Cycl 14:1095–1108CrossRefGoogle Scholar
  12. Clymo RS, Bryant CL (2008) Diffusion and mass flow of dissolved carbon dioxide, methane, and dissolved organic carbon in a 7-m deep raised peat bog. Geochim Cosmochim Acta 72(8):2048–2066CrossRefGoogle Scholar
  13. Cole JJ, Prairie YT, Caraco NF, McDowell WH, Tranvik LJ, Striegl RG, Duarte CM, Kortelainen P, Downing JA, Middelburg JJ, Melack J (2007) Plumbing the global carbon cycle: integrating inland waters into the terrestrial carbon budget. Ecosystems 10:171–184CrossRefGoogle Scholar
  14. Davidson EA, Savage K, Verchot LV, Navarro R (2002) Minimizing artifacts and biases in chamber-based measurements of soil respiration. Agric For Meteorol 113(1–4):21–37CrossRefGoogle Scholar
  15. Dinsmore KJ, Billett MF (2008) Continuous measurement and modeling of CO2 losses from a peatland stream during stormflow events. Water Resour Res 44(12):W12417. doi: 10.1029/2008WR007284 CrossRefGoogle Scholar
  16. Dinsmore KJ, Billett MF, Skiba UM, Rees RM, Helfter C (2010) Role of the aquatic pathway in the carbon and greenhouse gas budgets of a peatland catchment. Glob Change Biol 16:2750–2762CrossRefGoogle Scholar
  17. Forbrich I, Kutzbach L, Hormann A, Wilmking M (2010) A comparison of linear and exponential regression for estimating diffusive CH4 fluxes by closed-chambers in peatlands. Soil Biol Biochem 42:507–515CrossRefGoogle Scholar
  18. Garnett MH, Hardie SML, Murray C (2011) Radiocarbon and stable carbon analysis of dissolved methane and carbon dioxide from the profile of a raised peat bog. Radiocarbon 53(1):71–83Google Scholar
  19. Garnett MH, Dinsmore KJ, Billett MF (2012a) Annual variability in the radiocarbon age and source of dissolved CO2 in a peatland stream. Sci Total Environ 427–428:277–285CrossRefGoogle Scholar
  20. Garnett MH, Hardie SML, Murray C (2012b) Radiocarbon analysis of methane emitted from the surface of a raised peat bog. Soil Biol Biochem 50:158–163CrossRefGoogle Scholar
  21. Hemming D, Yakir D, Ambus P, Aurela M, Besson C, Black K, Buchmann N, Burlett R, Cescatti A, Clement R, Gross P, Granier A, Grunwald T, Havrankova K, Janous D, Janssens IA, Knohl A, Ostner BK, Kowalski A, Laurila T, Mata C, Marcolla B, Matteucci G, Moncrieff J, Moors EJ, Osborne B, Pereira JS, Pihlatie M, Pilegaard K, Ponti F, Rosova Z, Rossi F, Scartazza A, Vesala T (2005) Pan-European delta C-13 values of air and organic matter from forest ecosystems. Glob Change Biol 11(7):1065–1093CrossRefGoogle Scholar
  22. Hornibrook ERC (2009) The stable carbon isotope composition of methane produced and emitted from northern peatlands. In: Baird A, Belyea L, Comas X, Reeve A, Slater L (eds) Northern peatlands and carbon cycling. American Geophysical Union, pp 187–203Google Scholar
  23. Johnson MS, Billett MF, Dinsmore KJ, Wallin M, Dyson K (2010) Direct in situ measurement of dissolved carbon dioxide in freshwater aquatic systems—method and applications. Ecohydrology 3:68–78Google Scholar
  24. Koehler AK, Sottocornola M, Kiely G (2011) How strong is the current carbon sequestration of an Atlantic blanket bog? Glob Change Biol 17:309–319CrossRefGoogle Scholar
  25. Langdon PG, Barber KE (2005) The climate of Scotland over the last 5000 years inferred from multiproxy peatland records: inter-site correlations and regional variability. J Quat Sci 20(6):549–566CrossRefGoogle Scholar
  26. Lassey K, Lowe DJ, Smith A (2007) The atmospheric cycling of radiomethane and the “fossil fraction” of the methane source. Atmos Chem Phys 7:2141–2149CrossRefGoogle Scholar
  27. Levin I, Hammer S, Kromer B, Meinhardt F (2008) Radiocarbon observations in atmospheric CO2: determining fossil fuel CO2 over Europe using Jungfraujoch observations as background. Sci Total Environ 391:211–216CrossRefGoogle Scholar
  28. Mayorga E, Aufdenkampe AK, Masiello CA, Krusche AV, Hedges JI, Quay PD, Richey JE, Brown TA (2005) Young organic matter as a source of carbon dioxide outgassing from Amazonian rivers. Nature 436(7050):538–541CrossRefGoogle Scholar
  29. Nakagawa F, Yoshida N, Nojiri Y, Makarov VN (2002) Production of methane from alassesin eastern Siberia: implications from its 14C and stable isotopic compositions. Glob Biogeochem Cycl 16(3):1041CrossRefGoogle Scholar
  30. Öquist MG, Wallin M, Seibert J, Bishop K, Laudon H (2009) Dissolved inorganic carbon export across the soil/stream interface and its fate in a boreal headwater stream. Environ Sci Technol 43(19):7364–7369CrossRefGoogle Scholar
  31. Repo ME, Huttunen JT, Naumov AV, Chichulin AV, Lapshina ED, Bleuten W, Martikainen PJ (2007) Release of CO2 and CH4 from small wetland lakes in western Siberia. Tellus Ser B 59(5):788–796CrossRefGoogle Scholar
  32. Slota P, Jull AJT, Linick T, Toolin LJ (1987) Preparation of small samples for 14C accelerator targets by catalytic reduction of CO. Radiocarbon 29(2):303–306Google Scholar
  33. Steinmann P, Eilrich B, Leuenberger M, Burns SJ (2008) Stable carbon isotope composition and concentrations of CO2 and CH4 in the deep catotelm of a peat bog. Geochim Cosmochim Acta 72:6015–6026CrossRefGoogle Scholar
  34. Stuiver M, Polach HA (1977) Reporting of 14C data. Radiocarbon 19(3):355–363Google Scholar
  35. Tipping E, Billett MF, Bryant CL, Buckingham S, Thacker SA (2010) Sources and ages of dissolved organic matter in peatland streams: evidence from chemistry mixture modelling and radiocarbon data. Biogeochemistry 100(1–3):121–137CrossRefGoogle Scholar
  36. Vachon D, Prairie YT, Cole JJ (2010) The relationship between near-surface turbulence and gas transfer velocity in freshwater systems and its implications for floating chamber measurements of gas exchange. Limnol Oceanogr 55:1723–1732CrossRefGoogle Scholar
  37. Walter KM, Zimov SA, Chanton JP, Verbyla D, Chapin FS III (2006) Methane bubbling from Siberian thaw lakes as a positive feedback to climate warming. Nature 443(7107):71–75CrossRefGoogle Scholar
  38. Walter KM, Chanton JP, Chapin FS III, Schuur EAG, Zimov SA (2008) Methane production and bubble emissions from Arctic lakes: isotopic implications for source pathways and ages. J Geophys Res Biogeosci 113:G00A08. doi: 10.1029/2007JG000569 CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2012

Authors and Affiliations

  • M. H. Garnett
    • 1
  • S. M. L. Hardie
    • 2
  • C. Murray
    • 1
  • M. F. Billett
    • 3
  1. 1.Natural Environment Research Council Radiocarbon FacilityEast KilbrideUK
  2. 2.Scottish Universities Environmental Research CentreEast KilbrideUK
  3. 3.Centre for Ecology and HydrologyPenicuikUK

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