Preservation of protists within decaying plants from geothermally influenced wetlands of Yellowstone National Park, Wyoming, United states

Channing, Alan and Wujek, Daniel E. 2010. Preservation of protists within decaying plants from geothermally influenced wetlands of Yellowstone National Park, Wyoming, United states. Palaios 25 (5) , pp. 347-355. 10.2110/palo.2009.p09-057r

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Abstract

Decaying and partially silica-permineralized subfossil plant stems collected from geothermally influenced wetlands of Yellowstone National Park contain evidence of colonization by protists, including heliozoa and chrysophytes. Wetland pools in which the plants and heliozoans occur represent an extreme environment characterized by steady influxes of hotspring water. Recorded physicochemical conditions in wetland pools reveal relatively high temperatures (often >35 uC), high pH (<— 9.1), high conductivity (>3000 mS/cm21), brackish salinity and elevated concentrations of toxic elements including antimony (Sb), thallium (Tl), mercury (Hg), and arsenic (As). This report contains the first observations of heliozoans and chrysophytes from intercellular sites within decaying plants and adds a previously unreported and extreme environment to their known habitats. Such settings are potential taphonomic windows for preservation of fossil protists.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Earth and Environmental Sciences
Subjects:	Q Science > QE Geology
Publisher:	Society for Sedimentary Geology
ISSN:	0883-1351
Funders:	Leverhulme Trust, NERC
Last Modified:	04 Feb 2022 10:19
URI:	https://orca.cardiff.ac.uk/id/eprint/16343

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