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Comments on Brugger and others (2018) ‘A quantitative comparison of microfossil extraction methods from ice cores’

  • DANIELA FESTI (a1), WERNER KOFLER (a1) and KLAUS OEGGL (a1)

Abstract

In our comments, we re-evaluate Brugger and others (2018) Lycopodium/Eucalyptus double marker approach, based on the fact that previous evidence already demonstrated that the batch of Eucalyptus tablets used by Brugger and others (2018) is not suitable for quantitative comparisons as they are characterized by inconsistent pollen concentration. We present clear evidence that the Eucalyptus tablets do feature inaccurate pollen concentrations, and are therefore improper for all quantitative comparisons of microfossil extraction methods. Consequently, the results of the quantitative and qualitative assessment of different pollen extraction methods from ice samples compiled by Brugger and others (2018) are highly questionable due to the use of faulty marker tablets.

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Copyright

This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.

Corresponding author

Correspondence: Daniela Festi <Daniela.Festi@uibk.ac.at>

References

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Brugger, SO and 7 others (2018) A quantitative comparison of microfossil extraction methods from ice cores. J. Glaciol., 64(245), 432442 (doi: 10.1017/jog.2018.31)
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Festi, D and 6 others (2015) A novel pollen-based method to detect seasonality in ice cores: a case study from the Ortles glacier, South Tyrol, Italy. J. Glaciol., 61, 815824 (doi: 10.3189/2015JoG14J236)
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