Antarctic Terrestrial Microbiology: Physical and Biological by Don A. Cowan

By Don A. Cowan

This booklet brings jointly a number of the world’s best specialists within the fields of Antarctic terrestrial soil ecology, offering a accomplished and entirely updated research of the prestige of Antarctic soil microbiology.

Antarctic terrestrial soils characterize essentially the most severe environments in the world. as soon as regarded as principally sterile, it truly is referred to now that those different and sometimes really good severe habitats harbor a truly wide selection of other microorganisms.

Antarctic soil groups are particularly easy, yet now not unsophisticated. fresh phylogenetic and microscopic experiences have established that those groups have good validated trophic structuring and play an important function in nutrient biking in those chilly and infrequently dry wilderness ecosystems. they're unusually aware of switch and in all probability delicate to climatic perturbation.

Antarctic terrestrial soils additionally harbor really expert ‘refuge’habitats, the place microbial groups strengthen below (and inside) translucent rocks. those cryptic habitats provide designated versions for knowing the actual and organic ‘drivers’ of neighborhood improvement, functionality and evolution.

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Extra info for Antarctic Terrestrial Microbiology: Physical and Biological Properties of Antarctic Soils

Sample text

Longispora, and L. antarcticus, are relevant although not strictly soil-inhabiting fungi and they were isolated from sediments and cyanobacterial mats (McInnis 2003). Understanding the ability of these fungi to adapt from one environment to another will assist in determining their ecosystem impact, as McInnis (2003) wrote ‘‘Such shallow freshwater sites may represent a physical extension of damp terrestrial habitats as, like the surrounding terrestrial catchments, they freeze solid for up to 9 months each year, and are less influenced by sedimentation and burial processes seen at deeper sites’’.

Arenz et al. 1 Introduction Research on Antarctic fungi has occurred since the late 19th/early 20th century (Bommer and Rousseau 1905; Brown 1906) and much of the published work on soil microbiology was reviewed in a comprehensive way by Vishniac (1993). The list of non-lichenized fungi reported from Antarctic regions (continental as well as sub-Antarctic islands) is currently freely available for reference online through the British Antarctic Survey (Bridge et al. 2009). Given the number and variety of non-lichenized Antarctic fungal species recorded so far in their extensive review, Bridge and Spooner (2012) suggested that ‘‘fungi may be the most diverse biota in the Antarctic’’.

2012). Bacterial community fingerprinting analyses of soils in the Darwin Mountains revealed bacterial diversity was greatest in younger, less developed soils, which had lower salinity and higher C/N ratios than older soils (Magalhães et al. 2012). The authors suggest that salt accumulation in older terrains may constrain bacterial diversity. Additionally, cyanobacterial community fingerprints were examined, and signatures were detected in 57 % of sampling sites, with diversity most strongly correlated with soil pH, C/N ratios, and soil salinity.

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