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Refining CLAMP - investigations towards improving the Climate Leaf Analysis Multivariate Program

Teodorides, Vasilis; Mazouch, Petr; Spicer, Robert A. and Uhl, Dieter (2011). Refining CLAMP - investigations towards improving the Climate Leaf Analysis Multivariate Program. Palaeogeography, Palaeoclimatology, Palaeoecology, 299(1-2) pp. 39–48.

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CLAMP (Climate Leaf Analysis Multivariate Program) has been used for the past 17 years to estimate palaeoclimatic conditions. The reliability and applicability of this method, based on leaf physiognomic characters of fossil woody dicots, has been widely discussed over the same period. The present study focuses on some technical aspects of CLAMP, mainly on its robustness in the context of the theoretical unimodal requirements of Canonical Correspondence Analysis, and introduces “correction coefficients” for these aspects of the statistical approach as a new way of interpreting and improving on CLAMP estimates. This tool was tested on datasets derived from 17 European fossil floras ranging in age from the Late Oligocene to the Pliocene. Additionally, an objective statistical method for the selection of the best-suited modern vegetation dataset from 144 site (Physg3br) or 173 (Physg3ar) extant biotopes is proposed.

Item Type: Journal Item
Copyright Holders: 2010 Elsevier
ISSN: 0031-0182
Project Funding Details:
Funded Project NameProject IDFunding Body
Not SetNot SetGACR (Grant Agency of the Czech Republic) [grant numbers P205/06/P007 and P210/10/0124]
Not SetNot SetKONTAKT (Ministry of Education of the Czech Republic) [grant number ME 09115]
Not SetNot SetChinese Academy of Sciences
Keywords: CLAMP; palaeoclimate; Palaeogene; Neogene; Czech Republic; France; Germany
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Environment, Earth and Ecosystem Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 25732
Depositing User: Robert Spicer
Date Deposited: 21 Dec 2010 16:59
Last Modified: 11 Jun 2018 20:36
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