Life in Antarctic Deserts and other Cold Dry Environments: Astrobiological Analogs
Peter T. Doran, W. Berry Lyons, Diane M. McKnight
Cambridge University Press, Apr 29, 2010 - Science
The McMurdo Dry Valleys form the largest relatively ice-free area on the Antarctic continent. The perennially ice-covered lakes, ephemeral streams and extensive areas of exposed soil are subject to low temperatures, limited precipitation and salt accumulation. The dry valleys thus represent a region where life approaches its environmental limits. This unique ecosystem has been studied for several decades as an analog to environments on other planets, particularly Mars. For the first time, the detailed terrestrial research of the dry valleys is brought together here, presented from an astrobiological perspective. Chapters include a discussion on the history of research in the valleys, a geological background of the valleys, setting them up as analogs for Mars, followed by chapters on the various sub-environments in the valleys such as lakes, glaciers and soils. Includes concluding chapters on biodiversity and other analog environments on Earth.
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
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 highaltitude subsurface desert and polar environments
Other editions - View all
analog Antarctic Dry Valleys Antarctic lake Antarctic Research Series Antarctica Arctic Astrobiology Atacama atmosphere bacteria Barrett basins Biology Bockheim brines Cabrol Canada Glacier carbon channels climate change cold crater cryoconite holes cryolakes cryptoendolithic cyanobacteria debris Denton deposits Doran Ecology ecosystems endolithic Environmental Microbiology environments flow Friedmann geochemistry geological geomorphic geomorphology Geophysical Research glacial Gooseff gullies habitats hydrological hyporheic zone ice cover impact Journal of Geophysical Kreslavsky Lake Bonney Lake Fryxell Lake Hoare landforms landscape latitudes layer lichens liquid water lobes Lyons Marchant and Head Mars martian McKay McKnight McMurdo Dry Valleys MDV lakes melting meltwater microbial communities microbial diversity microbial mats microclimate zones microorganisms Mikucki nutrients organic matter permafrost photosynthetic Planetary Science polar desert polygons ponds Priscu processes region rocks saline salts samples sediments sequences slopes snow soil Squyres streams subsurface surface Taylor Glacier Taylor Valley temperatures terrestrial Victoria Land Wright Valley