Schirmacher Oasis is one of the few ice-free plateaus in East Antarctica that maintains a unique distribution of over 120 microbial-rich, dynamic freshwater lakes, most of which are unexplored. In this study, we describe the bacterial diversity of the rock-water interface in Lake Tawani(P) using culture-independent Bacterial Tag Encoded FLX Amplicon Pyrosequencing (bTEFAP), clone library constr...

John C. Priscu, Edward E. Adams, Hans W. Paerl, Christian H. Fritsen, John E. Dore, John T. Lisle, Craig F. Wolf and Jill A. Mikucki Addresses: John C. Priscu, Craig F. Wolf, Jill A. Mikucki. Department of Land Resources and Environmental Sciences, Montana State University, Bozeman, Montana 59717 Edward E. Adams. Department of Civil Engineering, Montana State University, Bozeman, Montana 59717 ...

The waters of rhe sub-Antarctic Southern Ocean are legally distinctive from those which fall within the Antarctic Treaty area extending to 60e S, not only because the Treaty does not apply in those waters but also because sovereignty over sub-Antarctic islands is largely uncontested. As a result, many of the countries claiming sub-Antarctic possessions are able to assert the full range of marit...

Figure 3. Cumulative frequency distribution of the mean krill bio mass (g nr2) of 1-km subsamples for the fast (solid line) and slow (dashed line) surveys. Cram, D.L., J.J. Agenbag, I. Hampton, and A.A. Robertson. 1979. SAS Protea Cruise, 1978: The general results of the acoustics and remote sensing study, with recommendations for estimating the abundance of krill {Euphausia superba Dana). Sout...

The Larsemann Hills is an ice-free area of approximately 50 km(2), located halfway between the Vestfold Hills and the Amery Ice Shelf on the south-eastern coast of Prydz Bay, Princess Elizabeth Land, East Antarctica (69º30'S, 76º19'58″E). The ice-free area consists of two major peninsulas (Stornes and Broknes), four minor peninsulas, and approximately 130 islands. The Larsemann Hills area conta...

Lake Vanda is a perennially ice-covered, closed-basin lake in the McMurdo Dry Valleys, Antarctica. Laminated photosynthetic microbial mats cover the floor of the lake from below the ice cover to >40 m depth. In recent decades, the water level of Lake Vanda has been rising, creating a "natural experiment" on development of mat communities on newly flooded substrates and the response of deeper ma...

Antarctic krill Euphausia superba spawned on the outer continental shelf of the west Antarctic Peninsula can be entrained into the Southern Front of the Antarctic Circumpolar Current and transported across the Scotia Sea to South Georgia. A time-dependent, size-structured, physiologically based krill growth model was used to assess the food resources that are needed to sustain Antarctic krill d...

Surface air temperature (SAT) from four reanalysis/analysis datasets are analyzed and compared with the observed SAT from 11 stations in the Antarctic. It is found that the SAT variation from Goddard Institute for Space Studies (GISS) is the best to represent the observed SAT. Then we use the sea ice concentration (SIC) data from satellite measurements, the SAT data from the GISS dataset and st...

In this study, we present a list of crustaceans traced in plankton the southern basin Lake Baikal addition to some details regarding ecological peculiarities only known freshwater pelagic amphipod Macrohectopus branickii. The is an active predator among major parts food chain. Its role lake’s ecosystem similar that Antarctic krill and mysids Europe North America water bodies. As swimmer, M. bra...

The permanent ice cover of Lake Vida (Antarctica) encapsulates an extreme cryogenic brine ecosystem (-13 °C; salinity, 200). This aphotic ecosystem is anoxic and consists of a slightly acidic (pH 6.2) sodium chloride-dominated brine. Expeditions in 2005 and 2010 were conducted to investigate the biogeochemistry of Lake Vida's brine system. A phylogenetically diverse and metabolically active Bac...