Browsing by Author "Capone, Douglas G."

Now showing items 1-5 of 5

  • Carbon-fixation rates and associated microbial communities residing in arid and ephemerally wet Antarctic Dry Valley soils

    Niederberger, Thomas D.; Sohm, Jill A.; Gunderson, Troy; Tirindelli, Joëlle; Capone, Douglas G.; Carpenter, Edward J.; Cary, S. Craig (Frontiers, 2015)
    Carbon-fixation is a critical process in severely oligotrophic Antarctic Dry Valley (DV) soils and may represent the major source of carbon in these arid environments. However, rates of C-fixation in DVs are currently ...
  • Diverse and highly active diazotrophic assemblages inhabit ephemerally wetted soils of the Antarctic Dry Valleys

    Niederberger, Thomas D.; Sohm, Jill A.; Tirindelli, Joëlle; Gunderson, Troy; Capone, Douglas G.; Carpenter, Edward J.; Cary, S. Craig (Blackwell Publishing Ltd, 2012)
    Eolian transport of biomass from ephemerally wetted soils, associated with summer glacial meltwater runoffs and lake edges, to low-productivity areas of the Antarctic Dry Valleys (DV) has been postulated to be an important ...
  • Hypolithic communities: important nitrogen sources in Antarctic desert soils

    Cowan, Don A.; Sohm, Jill A.; Makhalanyane, Thulani P.; Capone, Douglas G.; Green, T.G. Allan; Tuffin, Marla I. (Wiley-Blackwell, 2011)
    Hypolithic microbial communities (i.e. cryptic microbial assemblages found on the undersides of translucent rocks) are major contributors of carbon input into the oligotrophic hyper-arid desert mineral soils of the Eastern ...
  • Microbial community composition of transiently wetted Antarctic Dry Valley soils

    Niederberger, Thomas D.; Sohm, Jill A.; Gunderson, Troy E.; Parker, Alexander E.; Tirindelli, Joëlle; Capone, Douglas G.; Carpenter, Edward J.; Cary, S. Craig (FRONTIERS RESEARCH FOUNDATION, 2015-01-28)
    During the summer months, wet (hyporheic) soils associated with ephemeral streams and lake edges in the Antarctic Dry Valleys (DVs) become hotspots of biological activity and are hypothesized to be an important source of ...
  • Rapid microbial dynamics in response to an induced wetting event in Antarctic Dry Valley Soils

    Niederberger, Thomas D.; Bottos, Eric M.; Sohm, Jill A.; Gunderson, Troy; Parker, Alex; Coyne, Kathryn J.; Capone, Douglas G.; Carpenter, Edward J.; Cary, S. Craig (Frontiers Media SA, 2019)
    The cold deserts of the McMurdo Dry Valleys (MDV), Antarctica, host a high level of microbial diversity. Microbial composition and biomass in arid vs. ephemerally wetted regions are distinctly different, with wetted ...