On the rocks: the microbiology of Antarctic Dry Valley soils
- S. Cary, I. McDonald, J. Barrett, D. Cowan
- Environmental ScienceNature Reviews Microbiology
- 1 February 2010
This work reviews the understanding of these extreme Antarctic terrestrial microbial communities, with particular emphasis on the factors that are involved in their development, distribution and maintenance in these cold desert environments.
A communal catalogue reveals Earth’s multiscale microbial diversity
A meta-analysis of microbial community samples collected by hundreds of researchers for the Earth Microbiome Project is presented, creating both a reference database giving global context to DNA sequence data and a framework for incorporating data from future studies, fostering increasingly complete characterization of Earth’s microbial diversity.
Enzymatic and Genetic Characterization of Carbon and Energy Metabolisms by Deep-Sea Hydrothermal Chemolithoautotrophic Isolates of Epsilonproteobacteria
The enzymatic and genetic characteristics described here were consistent with cellular carbon and energy metabolisms and suggest that molecular tools may have great potential for in situ elucidation of the ecophysiological roles of deep-sea Epsilonproteobacteria.
The Inter-Valley Soil Comparative Survey: the ecology of Dry Valley edaphic microbial communities
- Charles K. Lee, B. Barbier, E. Bottos, I. McDonald, S. Cary
- Biology, MedicineThe ISME Journal
- 1 May 2012
The results indicate that the microbial ecology of Dry Valley soils is highly localized and that physicochemical factors potentially have major roles in shaping the microbiology of ice-free areas of Antarctica, and raise previously unrecognized issues related to environmental management of this unique ecosystem.
Improved quantitative real‐time PCR assays for enumeration of harmful algal species in field samples using an exogenous DNA reference standard
This investigation demonstrates that the comparative Ct method with an exogenous DNA reference standard provides both accurate and reproducible quantification of HAB species in environmental samples.
Microbial community composition in soils of Northern Victoria Land, Antarctica.
This work investigates soil microbial communities from low- and high-productivity habitats in an isolated Antarctic location to determine how the soil environment impacts microbial community composition and structure and adds to the recent literature suggesting that there is a higher biodiversity within Antarctic soils than previously expected.
Evidence of Chemolithoautotrophy in the Bacterial Community Associated with Alvinella pompejana, a Hydrothermal Vent Polychaete
- B. Campbell, J. Stein, S. Cary
- Biology, Environmental ScienceApplied and Environmental Microbiology
- 1 September 2003
The results suggest that members of both the episymbiont and the surrounding free-living communities display a chemolithoautotrophic form of growth and therefore contribute fixed carbon to other organisms in the vent community.
Microbial biogeography of 925 geothermal springs in New Zealand
The largest known consolidated study of geothermal ecosystems to determine factors that influence biogeographical patterns in New Zealand determined that diversity is primarily influenced by pH at temperatures <70 °C; with temperature only having a significant effect for values >70”°C.
Ancient origins determine global biogeography of hot and cold desert cyanobacteria
Temporally scaled phylogenetic analyses showed no evidence of recent inter-regional gene flow, indicating populations have not shared common ancestry since before the formation of modern continents, and indicates that global distribution of desert cyanobacteria has not resulted from widespread contemporary dispersal but is an ancient evolutionary legacy.
Sources of edaphic cyanobacterial diversity in the Dry Valleys of Eastern Antarctica
It is suggested that the complete absence of lakes or ponds from Beacon Valley is a contributing factor to the low cyanobacterial component of these soils.