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Paratrochammina Minutissima n.sp. in Brackish, Marine-Derived Lakes of the Vestfold Hills, East Antarctica


Gibson, JAE and Quilty, PG and Swadling, KM and Newman, L and Paterson, KS, Paratrochammina Minutissima n.sp. in Brackish, Marine-Derived Lakes of the Vestfold Hills, East Antarctica, Journal of Foraminiferal Research, 38, (4) pp. 292-297. ISSN 0096-1191 (2008) [Refereed Article]

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Copyright © 2008 Cushman Foundation for Foraminiferal Research

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DOI: doi:10.2113/gsjfr.38.4.292


Paratrochammina minutissima n. sp. is described from Abraxas and Ace Lakes in the Vestfold Hills, East Antarctica. The species is characterized by very small size (120 mm diameter), 4K chambers in the final whorl, weak adherence of particles to the tectin chamber lining and a relatively prominent proloculus. Similar species occur in the fully marine environment and often in the abyssal ocean. Subfossil tests were observed in sediment cores from Abraxas Lake and nearby Ace Lake. Apparently, living specimens also occurred in plankton samples from Abraxas Lake, possibly indicating a lifestyle partly attached to zooplankton or floating debris, or floating unattached on density surfaces within the meromictic lake. The distribution of subfossil Paratrochammina minutissima in the sediments of Ace Lake was consistent with a marine origin for the species, while the distribution in the Abraxas Lake sediment indicated that the lake might predate the last glacial maximum.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Zoology
Research Field:Zoology not elsewhere classified
Objective Division:Environmental Management
Objective Group:Management of Antarctic and Southern Ocean environments
Objective Field:Biodiversity in Antarctic and Southern Ocean environments
UTAS Author:Gibson, JAE (Dr John Gibson)
UTAS Author:Quilty, PG (Dr Pat Quilty)
UTAS Author:Swadling, KM (Associate Professor Kerrie Swadling)
UTAS Author:Newman, L (Dr Louise Newman)
UTAS Author:Paterson, KS (Miss Kristina Paterson)
ID Code:54443
Year Published:2008
Web of Science® Times Cited:3
Deposited By:IASOS
Deposited On:2009-02-21
Last Modified:2017-02-23
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