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MICROBIALITES AND MICROBIAL MATS IN ANTARCTIC LAKES AS MODELS FOR PRECAMBRIAN ECOSYSTEMS

Authors
  • Dale Andersen
  • J, Tyler
  • Megan, Krusor
  • Kate, Wall
  • Dawn Y, Sumner
  • Ian, Hawes
  • Anne, Jungblut
Type
Published Article
Journal
2014 GSA Annual Meeting in Vancouver, British Columbia
Publication Date
Oct 21, 2014
Source
SETI Institute
License
Unknown

Abstract

Microbial mats are abundant in Antarctic lakes Joyce, Fryxell, Vanda, and Hoare (McMurdo Dry Valleys) and Lake Untersee (Queen Maud Land). During the summer, sufficient light penetrates the ice covers of these lakes to allow photosynthetic biomass accumulation. A paucity of macroscopic metazoans allows these ecosystems to develop much like Precambrian microbial mats. Mat morphology varies both within and between lakes, and in some cases mimics fossil stromatolite morphology. Small amounts of calcite precipitate ...

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