Deep Lake (Vestfold Hills, Antarctica)

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Deep Lake
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Deep Lake
Location Antarctica
Coordinates 68°33′36.000″S78°11′44.988″E / 68.56000000°S 78.19583000°E / -68.56000000; 78.19583000
Type lake
Max. depth36 meters (118 ft)

Deep Lake is a small hypersaline lake in the Vestfold Hills region of Antarctica. [1]

Deep Lake's surface temperature on average ranges from -16 to 12 °C, with only a few meters at the lake's surface exceeding 0 °C for a few months of the year during the austral summer. Lake water temperatures can fall as low as -20 °C in winter, however the lake's water column is able to remain free of ice year-around due to the high salinity (~270 g/L) of the lake water. [2] The archaeon Halorubrum lacusprofundi was first isolated from Deep Lake in the 1980s and is the first archaea domain member to be isolated from a cold environment. [3] [4] It has a max depth of 36 m (118 ft). [2]

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<i>Halorubrum lacusprofundi</i> Species of archaeon

Halorubrum lacusprofundi is a rod-shaped, halophilic Archaeon in the family of Halorubraceae. It was first isolated from Deep Lake in Antarctica in the 1980s.

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References

  1. ↑ Shih, Ivy (1 February 2016). "The cold case of Deep Lake". Lateral Magazine (7). Retrieved 30 November 2023.
  2. 1 2 Williams, Timothy J; Allen, Michelle A; DeMaere, Matthew Z; Kyrpides, Nikos C; Tringe, Susannah G; Woyke, Tanja; Cavicchioli, Ricardo (20 February 2014). "Microbial ecology of an Antarctic hypersaline lake: genomic assessment of ecophysiology among dominant haloarchaea". The ISME Journal. Springer Science and Business Media LLC. 8 (8): 1645–1658. doi: 10.1038/ismej.2014.18 . ISSN   1751-7362. PMC   4817606 . PMID   24553470.
  3. ↑ Franzmann PD, Stacklebrandt E, Sanderson K, Volkman JK, Camberon DE, Stevenson PL, McMeekin TA, Burton HR (1988). "Halobacterium lacusprofundii sp. nov., a halophilic bacterium isolated from Deep Lake, Antarctica". Systematic and Applied Microbiology. 11 (1): 20–27. doi:10.1016/S0723-2020(88)80044-4.
  4. ↑ DeMaere, Matthew Z.; Williams, Timothy J.; Allen, Michelle A.; Brown, Mark V.; Gibson, John A. E.; Rich, John; Lauro, Federico M.; Dyall-Smith, Michael; Davenport, Karen W.; Woyke, Tanja; Kyrpides, Nikos C.; Tringe, Susannah G.; Cavicchioli, Ricardo (30 September 2013). "High level of intergenera gene exchange shapes the evolution of haloarchaea in an isolated Antarctic lake". Proceedings of the National Academy of Sciences. 110 (42): 16939–16944. doi: 10.1073/pnas.1307090110 . ISSN   0027-8424. PMC   3801024 . PMID   24082106. From DL, Halorubrum lacusprofundi, the first member of the Archaea domain isolated from a cold environment (11), has been formally described.
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