Browsing by Author "Cowan, Don A."

Now showing items 1-5 of 28

  • Abiotic factors influence microbial diversity in permanently cold soil horizons of a maritime-associated Antarctic Dry Valley

    Stomeo, Francesca; Makhalanyane, Thulani P.; Valverde, Angel; Pointing, Stephen B.; Stevens, Mark I.; Cary, S. Craig; Tuffin, Marla I.; Cowan, Don A. (Blackwell Publishing Ltd., 2012)
    The McMurdo Dry Valleys collectively comprise the most extensive ice-free region in Antarctica and are considered one of the coldest arid environments on Earth. In low-altitude maritime-associated valleys, mineral soil ...
  • Airborne microbial transport limitation to isolated Antarctic soil habitats

    Archer, Stephen David James; Lee, Kevin C.; Caruso, Tancredi; Maki, Teruya; Lee, Charles Kai-Wu; Cary, S. Craig; Cowan, Don A.; Maestre, Fernando T.; Pointing, Stephen B. (Nature Publishing Group, 2019)
    Dispersal is a critical yet poorly understood factor underlying macroecological patterns in microbial communities1. Airborne microbial transport is assumed to occupy a central role in determining dispersal outcomes2,3, and ...
  • Ancient landscapes of the Namib Desert harbor high levels of genetic variability and deeply divergent lineages for Collembola.

    Collins, Gemma Elyse; Hogg, Ian D.; Baxter, Janine R.; Maggs-Kölling, Gillian; Cowan, Don A. (2019)
    Aim: To assess spatial patterns of genetic and species-level diversity for Namib Desert Collembola using mitochondrial DNA cytochrome c oxidase subunit I (COI) gene sequences. Location: Namib Desert gravel plains. Taxon: ...
  • Bacterial diversity in three different antarctic cold desert mineral soils

    Smith, Jacques J.; Tow, Lemese Ah; Stafford, William; Cary, S. Craig; Cowan, Don A. (Springer, 2006)
    A bacterial phylogenetic survey of three environmentally distinct Antarctic Dry Valley soil biotopes showed a high proportion of so-called “uncultured” phylotypes, with a relatively low diversity of identifiable phylotypes. ...
  • Biotic interactions are an unexpected yet critical control on the complexity of an abiotically driven polar ecosystem.

    Lee, Charles Kai-Wu; Laughlin, Daniel C.; Bottos, Eric M.; Caruso, Tancredi; Joy, Kurt; Barrett, John E.; Brabyn, Lars; Nielsen, Uffe N.; Adams, Byron J.; Wall, Diana H.; Hopkins, David W.; Pointing, Stephen B.; McDonald, Ian R.; Cowan, Don A.; Banks, Jonathan C.; Stichbury, Glen; Jones, Irfon; Zawar-Reza, Peyman; Katurji, Marwan; Hogg, Ian D.; Sparrow, Ashley D.; Storey, Bryan C.; Green, T.G. Allan; Cary, S. Craig (2019)
    Abiotic and biotic factors control ecosystem biodiversity, but their relative contributions remain unclear. The ultraoligotrophic ecosystem of the Antarctic Dry Valleys, a simple yet highly heterogeneous ecosystem, is a ...