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Plant and Soil

, Volume 353, Issue 1–2, pp 1–9 | Cite as

Interpreting the ash trend within ombrotrophic bog profiles: atmospheric dust depositions vs. mineralization processes. The Etang de la Gruère case study

  • C. Zaccone
  • T. M. Miano
  • W. Shotyk
Letter

Abstract

Introduction

Ash peaks along ombrotrophic bog profiles may arise from several different processes. In a recent paper, Leifeld and co-authors (Plant Soil 341:349–361, 2011) argued that ash peaks along the Etang de la Gruère (EGr) peat bog profiles are signs of previous periods of higher peat decomposition rather that an indication of periods of elevated dust inputs.

Aims and methods

Here we question the approach and scrutinize results using published data on several peat cores from EGr, demonstrating that peaks in ash content at EGr are very reproducible when cores are carefully collected (e.g., using the Wardenaar corer), and age dated (using 210Pb and 14C).

Results

Data clearly show that variations in ash content along bog profiles cannot be attributed simply, or exclusively, to differences in organic matter mineralization rate, and that averaging the ash contents and normalizing to a single ash peak leads to losses in valuable information and defeats the purpose of detailed paleoenvironmental reconstructions.

Conclusions

Comparing results obtained using sensitive spectroscopic and isotopic tools with the ash content profiles at EGr shows clearly that the distribution of ash and/or acid-insoluble ash cannot be used as a surrogate for the intensity of processes including organic matter mineralization, decomposition and/or humification.

Keywords

Ash residue method Ombrotrophic bog Organic matter loss Mineral matter Age dating Humification 

Notes

Acknowledgements

C. Zaccone thanks the Italian Society of Soil Science for the “Training Award” that allowed the present research, and Prof. Moore for his useful suggestions.

References

  1. Belokopytov IE, Beresnevich VV (1955) Giktorf’s peat borers (in Russian). Torf Prom 8:9–10Google Scholar
  2. Björck S, Clemmensen LB (2004) Aeolian sediment in raised bog deposits, Halland, SW Sweden: a new proxy record of Holocene winter storminess variation in southern Scandinavia? Holocene 14:677–688CrossRefGoogle Scholar
  3. Blackford JJ, Chambers FM (1993) Determining the degree of peat decomposition for peat-based palaeoclimatic studies. Inter Peat J 5:7–24Google Scholar
  4. Bond G, Showers W, Cheseby M, Lotti R, Almasi P, deMenocal P, Priore P, Cullen H, Hajdas I, Bonani G (1997) A pervasive millenial-scale cycle in North Atlantic Holocene and Glacial Climates. Science 278:1257–1266CrossRefGoogle Scholar
  5. Chambers FM, Beilman DW, Yu Z (2011) Methods for determining peat humification and for quantifying peat bulk density, organic matter and carbon content for palaeostudies of climate and peatland carbon dynamics. Mires Peat 7:1–10Google Scholar
  6. Cocozza C, D’Orazio V, Miano TM, Shotyk W (2003) Characterization of solid and aqueous phases of a peat bog profile using molecular fluorescence spectroscopy, ESR and FT-IR, and comparison with physical properties. Org Geochem 34:49–60CrossRefGoogle Scholar
  7. de Jong R, Björck S, Björkman L, Clemmensen LB (2006) Storminess variation during the last 6500 years as reconstructed from an ombrotrophic peat bog in Halland, southwest Sweden. J Quaternary Sci 21:905–919CrossRefGoogle Scholar
  8. DeNiro MJ, Hastorf CA (1985) Alteration of 15N/14N and 13C/12C ratios of plant matter during the initial stages of diagenesis: studies utilizing archaeological specimens from Peru. Geochim Cosmochim Acta 49:97–115CrossRefGoogle Scholar
  9. Givelet N, Le Roux G, Cheburkin A, Chen B, Frank J, Goodsite ME, Kempter H, Krachler M, Noernberg T, Rausch N, Rheinberger S, Roos-Barraclough F, Sapkota A, Scholz C, Shotyk W (2004) Suggested protocol for collecting, handling and preparing peat cores and peat samples for physical, chemical, mineralogical and isotopic analyses. J Environ Monit 6:481–492PubMedCrossRefGoogle Scholar
  10. Hedges JI, Mann DC (1979) The characterization of plant tissues by their lignin oxidation products. Geochim Cosmochim Acta 43:1803–1807CrossRefGoogle Scholar
  11. Hornibrook ERC, Longstaffe FJ, Fyfe FS, Bloom Y (2000) Carbon-isotope ratios and carbon, nitrogen and sulfur abundances in flora and soil organic matter from a temperate-zone bog and marsh. Geochem J 34:237–245CrossRefGoogle Scholar
  12. Joray M (1942) L’Étang de la Gruyère, Jura bernois. Étude pollenanalytique et stratigraphique de la tourbière. In: Matériaux pour le levé géobotanique de la Suisse, 25. Hans Huber, BerneGoogle Scholar
  13. Jowsey PC (1966) An improved peat sampler. New Phytol 65:245–248CrossRefGoogle Scholar
  14. Kendall C (1998) Tracing nitrogen sources and cycling in catchments. In: Kendall C, McDonnell JJ (eds) Isotope tracers in catchment hydrology. Elsevier, Amsterdam, pp 519–576Google Scholar
  15. Krachler M, Mohl C, Emons H, Shotyk W (2003) Atmospheric deposition of V, Cr, and Ni since 12,370 14C yr BP recorded by a Swiss peat bog profile. Environ Sci Technol 37:2658–2667PubMedCrossRefGoogle Scholar
  16. Kuhry P, Vitt DH (1996) Fossil carbon/nitrogen ratios as a measure of peat decomposition. Ecology 77:271–275CrossRefGoogle Scholar
  17. Leifeld J, Gubler L, Grünig A (2011) Organic matter losses from temperate ombrotrophic peatlands: an evaluation of the ash residue method. Plant Soil 341:349–361CrossRefGoogle Scholar
  18. Mattson S, Koutler-Andersson E (1954) Geochemistry of a raised bog. Annals Royal Agric College Swed 21:321–366Google Scholar
  19. Mattson S, Koutler-Andersson E (1955) Geochemistry of a raised bog II. Some nitrogen relationships. Annals Royal Agric College Swed 22:219–224Google Scholar
  20. Nadelhoffer KJ, Fry B (1994) N isotope studies in forested ecosystems. In: Lajtha K, Michener RH (eds) Stable isotopes in ecology and environmental science. Blackwell, Oxford, pp 22–44Google Scholar
  21. Roos-Barraclough F, van der Knaap WO, van Leeuwen JFN, Shotyk W (2004) A Late-glacial and Holocene record of climate change and possible modern anthropogenic influences from a Swiss peat humification profile. Holocene 14:7–19CrossRefGoogle Scholar
  22. Sapkota A, Cheburkin AK, Shotyk W (2007) Six millenia of atmospheric dust deposition in southernmost South America (Isla Navarino, Chile). Holocene 17:561–572CrossRefGoogle Scholar
  23. Shotyk W (1996) Peat bog archives of metal deposition: geochemical evaluation of peat profiles, natural variations in metal concentrations, and metal enrichment factors. Environ Rev 4:149–183CrossRefGoogle Scholar
  24. Shotyk W, Steinmann P (1994) Pore-water indicators of rainwater-dominated versus groundwater-dominated peat bog profiles (Jura Mountains, Switzerland). Chem Geol 116:137–146CrossRefGoogle Scholar
  25. Shotyk W, Cheburkin AK, Appleby PG, Fankhauser A, Kramers JD (1996) Two thousand years of atmospheric arsenic, antimony, and lead deposition recorded in a peat bog profile, Jura Mountains, Switzerland. Earth Planet Sci Lett 145:E1–E7CrossRefGoogle Scholar
  26. Shotyk W, Weiss D, Appleby PG, Cheburkin AK, Frei R, Gloor M, Kramers JD, Reese S, van der Knaap WO (1998) History of atmospheric lead deposition since 12,370 14C yr BP from a peat bog, Jura Mountains Switzerland. Science 281:1635–1640PubMedCrossRefGoogle Scholar
  27. Shotyk W, Weiss D, Kramers JD, Frei R, Cheburkin AK, Gloor M, Reese S (2001) Geochemistry of the peat bog at Etang de la Gruère, Jura Mountains, Switzerland, and its record of atmospheric Pb and lithogenic trace metals (Sc, Ti, Y, Zr, and REE) since 12,370 14C yr BP. Geochim Cosmochim Acta 65:2337–2360CrossRefGoogle Scholar
  28. Shotyk W, Krachler M, Martinez-Cortizas A, Cheburkin AK, Emons H (2002a) A peat bog record of natural, pre-anthropogenic enrichments of trace elements in atmospheric aerosols since 12,370 14C yr BP, and their variation with Holocene climate change. Earth Planet Sci Lett 199:21–37CrossRefGoogle Scholar
  29. Shotyk W, Weiss D, Heisterkamp M, Cheburkin AK, Appleby PG, Adams FC (2002b) New peat bog record of atmospheric lead pollution in Switzerland: Pb concentrations, enrichment factors, isotopic composition, and organolead species. Environ Sci Technol 36:3893–3900PubMedCrossRefGoogle Scholar
  30. Steinmann P, Shotyk W (1997) Geochemistry, mineralogy, and geochemical mass balance on major elements in two peat bog profiles (Jura Mountains, Switzerland). Chem Geol 138:25–53CrossRefGoogle Scholar
  31. Wardenaar ECP (1987) A new hand tool for cutting peat profiles. Can J Bot Rev Can Bot 65:1772–1773Google Scholar
  32. Weiss D, Shotyk W, Cheburkin AK, Gloor M, Reese S (1997) Atmospheric lead deposition from 12,400 to ca. 2,000 yrs BP in a peat bog profile, Jura Mountains, Switzerland. Water Air Soil Pollut 100:311–324CrossRefGoogle Scholar
  33. Weiss D, Shotyk W, Page SE, Rieley JO, Reese S, Martinez-Cortizas A (2002) The geochemistry of major and selected trace elements in a forested peat bog, Kalimantan, SE-Asia, and its implications for past atmospheric dust deposition. Geochim Cosmochim Acta 66:2307–2323CrossRefGoogle Scholar
  34. Zaccone C, Cocozza C, Cheburkin AK, Shotyk W, Miano TM (2007a) Enrichment and depletion of major and trace elements, and radionuclides in ombrotrophic raw peat and corresponding humic acids. Geoderma 141:235–246CrossRefGoogle Scholar
  35. Zaccone C, Miano TM, Shotyk W (2007b) Qualitative comparison between raw peat and related humic acids in an ombrotrophic bog profile. Org Geochem 38:151–160CrossRefGoogle Scholar
  36. Zaccone C, Said-Pullicino D, Gigliotti G, Miano TM (2008) Diagenetic trends in the phenolic constituents of Sphagnum-dominated peat and its corresponding humic acid fraction. Org Geochem 39:830–838CrossRefGoogle Scholar
  37. Zaccone C, D’Orazio V, Shotyk W, Miano TM (2009) Chemical and spectroscopic investigation of porewater and aqueous extracts of corresponding peat samples throughout a bog core (Jura Mountains, Switzerland). J Soil Sediment 9:443–456CrossRefGoogle Scholar
  38. Zaccone C, Casiello G, Longobardi F, Bragazza L, Sacco A, Miano TM (2011a) Evaluating the ‘conservative’ behaviour of stable isotopic ratios (δ13C, δ15N, and δ18O) in humic acids and their reliability as paleoenvironmental proxies along a peat sequence. Chem Geol 285:124–132CrossRefGoogle Scholar
  39. Zaccone C, Sanei H, Outridge PM, Miano TM (2011b) Studying the humification degree and evolution of peat down a Holocene bog profile (Inuvik, NW Canada): a petrological and chemical perspective. Org Geochem 42:399–408CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.Department of Agro-Environmental Sciences, Chemistry and Plant ProtectionUniversity of FoggiaFoggiaItaly
  2. 2.Department of Biology and Chemistry of Agro-Forestry and EnvironmentUniversity of BariBariItaly
  3. 3.Institute of Earth Sciences, University of HeidelbergHeidelbergGermany
  4. 4.Department of Renewable ResourcesUniversity of AlbertaEdmontonCanada

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