Book contents
- Frontmatter
- Contents
- List of contributors
- 1 Introduction
- 2 Geologic analogies between the surface of Mars and the McMurdo Dry Valleys: microclimate-related geomorphic features and evidence for climate change
- 3 The legacy of aqueous environments on soils of the McMurdo Dry Valleys: contexts for future exploration of martian soils
- 4 The antarctic cryptoendolithic microbial ecosystem
- 5 Antarctic McMurdo Dry Valley stream ecosystems as analog to fluvial systems on Mars
- 6 Saline lakes and ponds in the McMurdo Dry Valleys: ecological analogs to martian paleolake environments
- 7 The biogeochemistry and hydrology of McMurdo Dry Valley glaciers: is there life on martian ice now?
- 8 Factors promoting microbial diversity in the McMurdo Dry Valleys, Antarctica
- 9 Other analogs to Mars: high-altitude, subsurface, desert, and polar environments
- Index
- References
7 - The biogeochemistry and hydrology of McMurdo Dry Valley glaciers: is there life on martian ice now?
Published online by Cambridge University Press: 06 July 2010
Book contents
- Frontmatter
- Contents
- List of contributors
- 1 Introduction
- 2 Geologic analogies between the surface of Mars and the McMurdo Dry Valleys: microclimate-related geomorphic features and evidence for climate change
- 3 The legacy of aqueous environments on soils of the McMurdo Dry Valleys: contexts for future exploration of martian soils
- 4 The antarctic cryptoendolithic microbial ecosystem
- 5 Antarctic McMurdo Dry Valley stream ecosystems as analog to fluvial systems on Mars
- 6 Saline lakes and ponds in the McMurdo Dry Valleys: ecological analogs to martian paleolake environments
- 7 The biogeochemistry and hydrology of McMurdo Dry Valley glaciers: is there life on martian ice now?
- 8 Factors promoting microbial diversity in the McMurdo Dry Valleys, Antarctica
- 9 Other analogs to Mars: high-altitude, subsurface, desert, and polar environments
- Index
- References
Summary
Introduction
Microbial life on Earth usually requires at least five prerequisites: innoculi, liquid water, and sources of energy, carbon, and nutrients (Rothschild and Manicelli,2001). One of the major advances in the cryospheric sciences during the last decade is the realization that microbial life or innoculi are found in a whole spectrum of environments throughout glacier ice masses of all scales, from the snow cover, through ice surface (or supraglacial) environments, within ice (or englacial) environments through to ice bed (or subglacial) environments (Hodson et al., 2008). A remarkable observation is that apparently viable microbes can be found throughout the whole 4 km of ice column found near the center of the East Antarctic Ice Sheet above subglacial Lake Vostok (Priscu et al., 2008). Hence, glaciers on Earth can now be regarded as biomes or ecotomes, and the question arises whether or not glaciers on other celestial bodies have the potential to act as ecotomes. This chapter begins to provide an answer by first describing how microbial life exists in the cold glaciers of the McMurdo Dry Valleys, and second, by speculating on whether or not there is the chance of life in the glaciers and ice caps of Mars. We make the assumption that potential microbial life on Mars is carbon based and requires the same five prerequisites for microbial life as on Earth (Rothschild and Manicelli, 2001).
- Type
- Chapter
- Information
- Life in Antarctic Deserts and other Cold Dry EnvironmentsAstrobiological Analogs, pp. 195 - 220Publisher: Cambridge University PressPrint publication year: 2010
References
, , and (2008). The Borealis basin and the origin of the martian crustal dichotomy, Nature, 453, 1212–1215.CrossRefGoogle ScholarPubMed
, , , et al. (2007). The biogeochemical evolution of cryoconite holes on Canada Glacier, Taylor Valley, Antarctica. Journal of Geophysical Research, 112, G04S35, doi: 10.1029/2007JG000442.CrossRefGoogle Scholar
and (2004). Impact of coloniser plant species on the development of decomposer microbial communities following deglaciation. Soil Biology and Biochemistry, 36, 555–559.CrossRefGoogle Scholar
and (2003). A sublimation model for Martian south polar ice features. Science, 299, 1051–1053.CrossRefGoogle ScholarPubMed
and (2004). Endangered Antarctic environments. Annual Review of Microbiology, 58, 649–690.CrossRefGoogle ScholarPubMed
, , , et al. (2002). Valley floor climate observations from the McMurdo Dry Valleys, Antarctica, 1986–2000. Journal of Geophysical Research, Atmospheres, 107, D24.CrossRefGoogle Scholar
, , and (2004). Impact of episodic warming events on the physical, chemical and biological relationships of lakes in the McMurdo Dry Valleys, Antarctica, Aquatic Geochemistry, 10(3), 239–268.CrossRefGoogle Scholar
, , , , (2007). Metabolic activity and diversity of cryoconites in the Taylor Valley, Antarctica. Journal of Geophysical Research, 112, G04S32, doi: 10.1029/2006JG000358.CrossRefGoogle Scholar
, , , , and (2006). Formation of glaciers on Mars by atmospheric precipitation at high obliquity. Science, 311, 368–371.CrossRefGoogle ScholarPubMed
, , , , and (1998). Glaciers of the McMurdo Dry Valleys, Southern Victoria Land, Antarctica. In Ecosystem Dynamics in a Polar Desert: The McMurdo Dry Valleys, Antarctica, ed. . Antarctic Research Series 72. Washington, D.C.: American Geophysical Union, pp. 65–75.Google Scholar
, , , et al. (1999). Physical controls on the Taylor Valley ecosystem, Antarctica. BioScience, 49(12), 961–971.CrossRefGoogle Scholar
, , , , and (2004). Evolution of cryoconite holes and their contribution to meltwater runoff from glaciers in the McMurdo Dry Valleys, Antarctica. Journal of Glaciology, 50(168), 35–45.CrossRefGoogle Scholar
, , , and (2008). Temporal variations in physical and chemical features of cryoconite holes on Canada Glacier, McMurdo Dry Valleys, Antarctica. Journal of Geophysical Research, 113, G01S92, doi: 10.1029/2007JG000430.CrossRefGoogle Scholar
and 19 others (2005). Indication of drier periods on Mars from the chemistry and mineralogy of atmospheric dust. Nature, 436, 62–65.CrossRefGoogle ScholarPubMed
(1979). Cryoconite holes on Sermikaysak, West Greenland. Journal of Glaciology, 22, 177–181.CrossRefGoogle Scholar
(2007). The geology of Mars: new insights and outstanding questions. In The Geology of Mars: Evidence from Earth-Based Analogs, ed. . Cambridge, UK: Cambridge University Press, pp. 1–46.Google Scholar
and (2003). Cold-based mountain glaciers on Mars: Western Arsia Mons. Geology, 31, 641–644.2.0.CO;2>CrossRefGoogle Scholar
and (2007). Heat transfer in volcano–ice interactions on Mars: synthesis of environments and implications for processes and landforms. Annals of Glaciology, 45, 1–13.CrossRefGoogle Scholar
(1993). Water as a limiting factor in the Antarctic terrestrial environment: a biogeographical synthesis. Arctic and Alpine Research, 25, 308–315.CrossRefGoogle Scholar
, , and (2006). CO2 jets formed by sublimation beneath translucent slab ice in Mars' seasonal south polar ice cap. Nature, 442, 793–796.CrossRefGoogle ScholarPubMed
, , , , and (1998). Segregation of solutes and gases in experimental freezing of dilute solutions: implications for natural glacial systems. Geochimica et Cosmochimica Acta, 62, 3637–3655.CrossRefGoogle Scholar
(2002). Flux of eolian sediment in the McMurdo Dry Valleys, Antarctica: a preliminary assessment. Arctic Antarctic and Alpine Research, 34, 318–323.CrossRefGoogle Scholar
, , , , , and (2005). Summer evolution of the north polar cap of Mars as observed by OMEGA/Mars Express. Science, 307, 1581–1584.CrossRefGoogle Scholar
, , and (1999). How important is terminus cliff melt?: a study of the Canada Glacier terminus, Taylor Valley, Antarctica. Global and Planetary Change, 22(1–4), 105–115.CrossRefGoogle Scholar
, , , et al. (2003). Surface glaciochemistry of Taylor Valley, southern Victoria Land, Antarctica and its relationship to stream chemistry. Hydrological Processes, 17(1), 115–130.CrossRefGoogle Scholar
, , and (2008). Mega-impact formation of Mars hemispheric dichotomy. Nature, 453, 1216–1219.CrossRefGoogle ScholarPubMed
, , , et al. (2005). Polar lakes, streams and springs as analogs for hydrological cycles on Mars. In Water on Mars and Life, ed. . Advances in Astrobiology and Biogeophysics. Berlin: Springer-Verlag, pp. 219–233.Google Scholar
(2008). Did an impact blast away half of the martian crust?Nature Geosciences, 1, 412–414.CrossRefGoogle Scholar
(2006). Findings of the Mars Special Regions Science Analysis Group. Astrobiology, 6, 677–732.CrossRefGoogle Scholar
and (2007). Bacterial diversity associated with Blood Falls, a subglacial outflow from the Taylor Glacier, Antarctica. Applied and Environmental Microbiology, 73, 4029–4039.CrossRefGoogle ScholarPubMed
, , , , and (2004). Geomicrobiology of Blood Falls: an iron rich saline discharge at the terminus of Taylor Glacier, Antarctica. Aquatic Chemistry, 10, 199–220.Google Scholar
, , , et al. (2007). Factors influencing bacterial dynamics along a transect from supraglacial runoff to proglacial lakes of a high Arctic glacier. FEMS Microbiol Ecology, 59, 307–317.CrossRefGoogle ScholarPubMed
and (2004). Gradient analysis of cryoconite ecosystems from two polar glaciers. Polar Biology, 27(2), 66–74.CrossRefGoogle Scholar
(2008). Phoenix lander uncovers ice on Mars. New Scientist. www.newscientist.com/article/dn14143.
, , , and (2008). Implications of an impact origin for the martian hemispheric dichotomy. Nature, 453, 1220–1223.CrossRefGoogle ScholarPubMed
, , , et al. (2006). Wind dispersal of soil invertebrates in the McMurdo Dry Valleys, Antarctica. Polar Biology, 29(4), 346–352.CrossRefGoogle Scholar
, , and (2004). Climatology of katabatic winds in the McMurdo dry valleys, southern Victoria Land, Antarctica. Journal of Geophysical Research, Atmospheres, 109, D3.CrossRefGoogle Scholar
and (1998). Microbial phototrophic, heterotrophic, and diazotrophic activities associated with aggregates in the permanent ice cover of Lake Bonney, Antarctica. Microbial Ecology, 36, 221–230.CrossRefGoogle ScholarPubMed
and 23 others (2007). Subsurface radar sounding of the south polar layered deposits of Mars. Science, 316, 92–95.CrossRefGoogle ScholarPubMed
, , , et al. (2004). The biodiversity and biogeochemistry of cryoconite holes from McMurdo Dry Valley glaciers, Antarctica. Arctic Antarctic and Alpine Research, 36(1), 84–91.CrossRefGoogle Scholar
and (2002). Earth's icy biosphere. In Microbial Biodiversity and Microprospecting, ed. . Washington, D.C.: ASM Press, pp. 130–145.Google Scholar
, , , et al. (2008). Antarctic subglacial water: origin, evolution and microbial ecology. In Polar Lakes and Rivers: Limnology of Arctic and Antarctic Aquatic Ecosystems, ed. and . Oxford, UK: Oxford University Press, pp. 119–135.CrossRefGoogle Scholar
, , , and (2007). High viral infection rates in Antarctic and Arctic bacterioplankton. Environmental Microbiology, 9, 250–255.CrossRefGoogle ScholarPubMed
, , , and (2008). Microbial primary production on an Arctic glacier is insignificant in comparison to allochthonous organic carbon input. Environmental Microbiology, doi: 10.1111/j.1462–2920.2008.01620.CrossRef
, , and (2003). Exposed water ice discovered near the south pole of Mars. Science, 299, 1048–1051.CrossRefGoogle ScholarPubMed
, , , et al. (2004). Extreme hydrochemical conditions in natural microcosms entombed within Antarctic ice. Hydrological Processes, 18(2), 379–387.CrossRefGoogle Scholar
, , , , and (2005). The chemical composition of runoff from Canada Glacier, Antarctica: implications for glacier hydrology during a cool summer. Annals of Glaciology, 40, 15–19.CrossRefGoogle Scholar
, , , and (1985). Cryoconite holes on glaciers. BioScience, 35(8), 499–503.CrossRefGoogle ScholarPubMed
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