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Climate-driven Enrichment of Pollutants in Peatlands : Volume 4, Issue 3 (27/06/2007)

By Martínez Cortizas, A.

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Book Id: WPLBN0003974488
Format Type: PDF Article :
File Size: Pages 15
Reproduction Date: 2015

Title: Climate-driven Enrichment of Pollutants in Peatlands : Volume 4, Issue 3 (27/06/2007)  
Author: Martínez Cortizas, A.
Volume: Vol. 4, Issue 3
Language: English
Subject: Science, Biogeosciences, Discussions
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2007
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Description
Description: Dept. Edafología y Química Agrícola, Universidad de Santiago de Compostela, Campus Universitario s/n, 15782 Santiago de Compostela, Spain. Peatlands play an important role for global carbon dynamics, acting as a sink or source depending on climate. Such changes imply a series of additional effects because peatlands are also an important reservoir of atmospherically derived pollutants. Using a multiproxy approach (non-pollen-palynomorphs, Δ15N, C/N, Se, Br, I, Hg, Ti), we show a relationship between climate (wetter-drier) and peat decomposition, which affected element concentrations in a Spanish bog during the last 5500 years. Changes in superficial wetness played a critical role in the cycling of elements coupled to carbon dynamics. Dry phases caused increased peat mineralisation, resulting in a 2–3 times increase in concentrations of the analysed elements independent from atmospheric fluxes. Under the present trend of climate change large areas of northern peatlands are expected to be severely affected; in this context our findings indicate that the increase in carbon release, which leads to an enrichment of elements, may enhance the export of stored contaminants (Hg, organohalogens) to the aquatic systems or to the atmosphere.

Summary
Climate-driven enrichment of pollutants in peatlands

Excerpt
Herczeg, A. L.: Early diagenesis of organic matter in lake sediments: a stable carbon isotope study of pore waters, Chem. Geol., 72, 199–209, 1988.; Aaby, B.: Cyclic variations in climate over the past 5500 years reflected in raised bogs, Nature, 263, 281–284, 1976.; Barber., K. E.: Peat Stratigraphy and Climate Change, Balkema, Rotterdam, 1981.; Biester, H., Keppler, F., Putschew, A., Martínez-Cortizas, A., and Petri, M.: Halogen retention, organohalogens, and the role of organic matter decomposition and halogen enrichment in two Chilean peat bogs, Environ. Sci. Technol. 38, 1984–1991, 2004.; Biester, H., Martínez-Cortizas, A., Birkenstock, S., and Kilian, R.: Effect of peat decomposition and mass loss on historic mercury records in peat bogs from Patagonia, Eviron. Sci. Technol., 37, 32–39, 2003.; Blackford, J. J. and Chambers, F. M.: Determining the degree of peat decomposition in peat-based palaeoclimatic studies, Intern. Peat J., 5, 7–24, 1993.; Caseldine, C. J., Baker, A., Charman, D. J., and Hendon, D. A.: comparative study of optical properties of NaOH peat extracts: implications for humification studies, The Holocene, 10, 649–658, 2000.; Chambers, F. M. and Charman, D. J.: Holocene environmental change: contributions from the peatland archive, The Holocene, 14, 1–6, 2004.; Cheburkin, A. K. and Shotyk, W.: An Energy-dispersive Miniprobe Multielement Analyzer (EMMA) for direct analysis of Pb and other trace elements in peats, Fress. J. Anal. Chem., 354, 688–691, 1996.; Freeman, C., Fenner, N., Ostle, N. J., Kang, H., Dowrick, D. J., Reynolds, B., Lock, M. A., Sleep, D., Hughes, S., Hudson, J.: Export of disolved organic carbon from peatlands under elevated carbon dioxide levels, Nature, 430, 195–198, 2004.; Freeman, C., Ostle, N., and Kang, H.: An enzymatic latch on a global carbon storage, Nature, 409, 149, 2001.; Gorham, E.: Northern peatlands: Role in the carbon cycle and probable responses to climatic warming, Ecological Applications, 1, 182–195, 1991.; Görres, M. and Frenzel, B.: The Pb, Br, and Ti content in peat bogs as indicator for recent and past depositions, Naturwissenschaften, 20, 333–335, 1993.; Gribble, G. W.: The diversity of naturally produced organohalogens, Chemosphere, 52, 289–297, 2003.; IPCC (Irish Peatland Conservation Council): Peatlands around the world (available at http://www.ipcc.ie/wptourhome1.html), 2000.; Kabata-Pendias, A. and Pendias, H.: Trace Elements in Soils and Plants, CRC Press, Boca Raton, 1992.; Kalviäinen, E. and Karunen, P.: On the growth, senescence, and decay-resistance of Spahgnum mosses, Proc. 7th Intern. Peat Congress. Dublin, 4, 263–275, 1984.; Keppler, F. and Biester, H.: Peatlands: a major sink of naturally formed organic chlorine,~ Chemosphere, 52, 451–453, 2003.; Khury, P. and De Vitt, D. H.: Fossil Carbon/Nitrogen ratios as a measure of peat decomposition, Ecology, 77, 271–275, 1996.; Lee, J. A. and Tallis, J. H.: Regional and historical aspects of lead pollution in Britain, Nature, 245, 216–218, 1973.; Létolle, R.: Nitrogen-15 in the natural environment. In P. Fritz & J.Ch. Fontes (eds) Handbook of Environmental Isotope Geochemistry, Vol. 1 The Terrestrial Environment, Chapter 10, 407–429, Elsevier, Amsterdam, 1980.; Macko, S., Entzeroth, L., and Parker, P.: Early diagenesis of organic matter in sediments. Assessment of mechanisms and preservation by the use of isotopic molecular approaches, in: Organic Geochemistry: Principles and Applications, edited by: Engel, J. M. H. and Macko, S. A., Plenum Press, New York, Chapter 9, 211–224, 1993.; Mart$\imath $nez Cortizas, A., García-Rodeja, E., Pontevedra Pombal, X., Nóvoa MuÑoz, J. C., Weiss, D., and Cheburkin, A.: Atmospheric Pb deposition in Spain during the last 4600 years recorded by two ombrotrophic peat bogs and implicatio

 

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