The Open UniversitySkip to content
 

Identifying the pollen of an extinct spruce species in the Late Quaternary sediments of the Tunica Hills region, south-eastern United States

Mander, L.; Rodriguez, J.; Mueller, P. G.; Jackson, S. T. and Punyasena, S. W. (2014). Identifying the pollen of an extinct spruce species in the Late Quaternary sediments of the Tunica Hills region, south-eastern United States. Journal of Quaternary Science, 29(7) pp. 711–721.

DOI (Digital Object Identifier) Link: https://doi.org/10.1002/jqs.2745
Google Scholar: Look up in Google Scholar

Abstract

Late Quaternary fluvial deposits in the Tunica Hills region of Louisiana and Mississippi are rich in spruce macrofossils of the extinct species Picea critchfieldii, the one recognized plant extinction of the Late Quaternary. However, the morphology of P. critchfieldii pollen is unknown, presenting a barrier to the interpretation of pollen spectra from the last glacial of North America. To address this issue, we undertook a morphometric study of Picea pollen from Tunica Hills. Morphometric data, together with qualitative observations of pollen morphology using Apotome fluorescence microscopy, indicate that Picea pollen from Tunica Hills is morphologically distinct from the pollen of P. glauca, P. mariana and P. rubens. Measurements of grain length, corpus width and corpus height indicate that Picea pollen from Tunica Hills is larger than the pollen of P. mariana and P. rubens, and is slightly larger than P. glauca pollen. We argue that the morphologically distinctive Tunica Hills Picea pollen was probably produced by the extinct spruce species P. critchfieldii. These morphological differences could be used to identify P. critchfieldii in existing and newly collected pollen records, which would refine its paleoecologic and biogeographic history and clarify the nature and timing of its extinction in the Late Quaternary.

Item Type: Journal Item
Copyright Holders: 2014 John Wiley & Sons, Ltd.
ISSN: 0267-8179
Project Funding Details:
Funded Project NameProject IDFunding Body
Not SetPIIF-GA-2012-328245EU
Keywords: morphometrics; palynology; paleoecology; plant extinction; taxonomic resolution
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: 50344
Depositing User: Luke Mander
Date Deposited: 28 Jul 2017 10:35
Last Modified: 08 Dec 2018 10:03
URI: http://oro.open.ac.uk/id/eprint/50344
Share this page:

Metrics

Altmetrics from Altmetric

Citations from Dimensions

Actions (login may be required)

Policies | Disclaimer

© The Open University   contact the OU