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The potential of biomarker proxies to trace climate, vegetation, and biogeochemical processes in peat : a review.

Naafs, B.D.A. and Inglis, G.N. and Blewett, J. and McClymont, E.L. and Lauretano, V. and Xie, S. and Evershed, R.P. and Pancost, R.D. (2019) 'The potential of biomarker proxies to trace climate, vegetation, and biogeochemical processes in peat : a review.', Global and planetary change., 179 . pp. 57-79.


Molecular fossils (biomarkers) are abundant in organic rich natural archives such as peats and lignites (fossilized peat), where their distribution is governed by their biological source, environmental factors, such as temperature and pH, and diagenetic reactions. As a result, biomarkers in peat have become an important tool to study past variations in vegetation, environment and climate in terrestrial settings, as well as biogeochemistry on time-scales of hundreds to millions of years ago. In recent years, significant progress has been made in understanding the controls on biomarker distributions, especially those derived from microorganisms and peat-forming plants, allowing for example, the quantification of past temperature and vegetation history during peat formation. Herein, we provide a review of a range of commonly applied biomarker proxies in peats, discuss the latest proxy developments, and explore the potential of using biomarkers in peat and lignite as paleoenvironmental proxies. We provide a framework for biomarker analyses in peat and identify possible future research directions.

Item Type:Article
Full text:(AM) Accepted Manuscript
Available under License - Creative Commons Attribution Non-commercial No Derivatives.
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Publisher statement:© 2019 This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Date accepted:11 May 2019
Date deposited:17 May 2019
Date of first online publication:13 May 2019
Date first made open access:13 May 2020

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