OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

Development and refinement of proxy-climate indicators from peats

Chambers, Frank M. and Booth, Robert K. and De Vleeschouwer, François and Lamentowicz, Mariusz and Le Roux, Gaël and Mauquoy, Dmitri and Nichols, Jonathan E. and Van Geel, Bas Development and refinement of proxy-climate indicators from peats. (2012) Quaternary International, 268. 21-33. ISSN 1040-6182

[img]
Preview
(Document in English)

PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
453kB

Official URL: http://dx.doi.org/10.1016/j.quaint.2011.04.039

Abstract

Peat, especially from acidic mires (bogs), is a natural archive of past environmental change. Reconstructions of past climate from bogs commenced in the 19th Century through examination of visible peat stratigraphy, and later formed the basis for a postglacial climatic scheme widely used in Northwest Europe. Nevertheless, misconceptions as to how bogs grow led to a 50-year lacuna in peat-climate study, before the concept of "cyclic regeneration" in bogs was refuted. In recent decades, research using proxyclimate indicators from bogs has burgeoned. A range of proxies for past hydrological change has been developed, as well as use of pollen, bog oaks and pines and other data to reconstruct past temperatures. Most of this proxy-climate research has been carried out in Northern Europe, but peat-based research in parts of Asia and North America has increased, particularly during the last decade, while research has also been conducted in Australia, New Zealand and South America. This paper reviews developments in proxy-climate reconstructions from peatlands; chronicles use of a range of palaeo-proxies such as visible peat stratigraphy, plant macrofossils, peat humification, testate amoebae and non-pollen palynomorphs; and explains the use of wiggle-match radiocarbon dating and relationship to climate shifts. It details other techniques being used increasingly, such as biomarkers, stable-isotopes, inorganic geochemistry and estimation of dust flux; and points to new proxies under development. Although explicit protocols have been developed recently for research on ombrotrophic mires, it must be recognised that not all proxies and techniques have universal applicability, owing to differences in species assemblages, mire formation, topographic controls, and geochemical characteristics.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com/science/article/pii/S104061821100259X
HAL Id:hal-00980256
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > University of Gloucestershire (UNITED KINGDOM)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > National Aeronautics and Space Administration - NASA (USA)
Other partners > Umea University (SWEDEN)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Adam Mickiewicz University - AMU (POLAND)
Other partners > Lehigh University (USA)
Other partners > University of Aberdeen - ABDN (UNITED KINGDOM)
Other partners > Vrije University Amsterdam - VU (NETHERLANDS)
Laboratory name:
Statistics:download
Deposited By: Gael Le Roux
Deposited On:17 Apr 2014 14:42

Repository Staff Only: item control page