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A sodium-form chelating ion-exchange resin, Amberlite IRC-748, and a natural zeolite were investigated … for the exchange of copper and ammonium ions from aqueous solutions at three temperatures ((4.0, 20.0, and 40.0) ( 0.2) °C. Maximum exchange capacities were determined…
Colonisation and development of sessile epibiotic assemblages on tiles was studied at … Casey Station, East Antarctica, using a mix of higher taxon classifications (family to phylum). Tiles … were deployed for 1 and 3 yr at 3 control and 2 impacted locations.
Past changes in East Antarctic Ice Sheet (EAIS) volume are poorly known and diffi cult to … measure, yet are critical for predicting the response of the ice sheet to modern climate change. In particular, it is important to identify the sources of sea-level rise since the Last Glacial … Maximum (LGM)…
A 100 cm long sediment sequence was recovered from Beaver Lake in Amery Oasis, East … Antarctica, using gravity and piston corers.
[1] The flow of water beneath the Antarctic Ice Sheet has … recently been shown to involve drainage from and exchange … between subglacial lakes, with flow routing over distances … of >100km. As subglacial water is known to be important to … ice-sheet dynamics…
Sub-Antarctic islands have a diversity of origins in detail but most are volcanic and very young suggesting that they are short-lived and that the distribution would have been very different a few million years ago. They contrast with the common tourist brochure concept of oceanic islands.
Statistically significant (at the 95% significance level) changes in daily cloud cover are … found to occur globally over land coincident with extreme increases in ‘fair-weather’ … measurements of vertical electric field (Ez) measured at Vostok, Antarctica.
Many parasitic Apicomplexa, such as Plasmodium falciparum, contain an unpigmented chloroplast remnant termed the … apicoplast, which is a target for malaria treatment. However, no close relative of apicomplexans with a functional … photosynthetic plastid has yet been described.
A new species of rotifer, Rhinoglena kutikovae … n.sp. (Monogononta: Epiphanidae), is described from a … freshwater lake in the Bunger Hills, East Antarctica. The … new taxon is characterized by the following combination of … characters:
Six Eudorylaimus species living on Antarctic mainland are described and compared on the basis of … paratype or freshly collected specimens. They are: E. antarcticus (Steiner, 1916) Yeates, 1970, E. nudicaudatus Heyns, 1993, E. shirasei Kito, Shishida & Ohyama, 1996, E. glacialis Andrássy…
It is now clear that Georg [von] Neumayer (enobled after this time) spent time in Tasmania between 8 and 19 April 1864.
The Lambert Glacier region of East Antarctica encompasses the proposed boundary between three of the ancient continents that … formed East Gondwana: Indo-Antarctica, the central East Antarctic Craton and a proposed extension of the Pinjarra Orogen of … Australia.
Antarctica is a continent locked in ice, with almost 99.7% of current terrain covered by permanent ice and snow, and clear evidence that, as recently as the Last Glacial Maximum (LGM), ice sheets were both thicker and much … more extensive than they are now.
The sea ice microbial community plays a key role in the productivity of the Southern Ocean. Exopolysaccharide … (EPS) is a major component of the exopolymer secreted by many marine bacteria to enhance survival … and is abundant in sea ice brine channels, but little is known about its function there.
Exopolysaccharides (EPSs) are high molecular weight … carbohydrate polymers that make up a substantial … component of the extracellular polymers surrounding … most microbial cells in the marine environment.
Aims: This study was undertaken to examine and characterize Antarctic marine bacterial isolates and the … exopolysaccharides (EPS) they produce in laboratory culture. Methods and Results:
Exopolysaccharides (EPS) may have an important role in … the Antarctic marine environment, possibly acting as ligands … for trace metal nutrients such as iron or providing … cryoprotection for growth at low temperature and high … salinity. Ten bacterial strains…
Ozone depletion has resulted in large increases in springtime ultraviolet-B radiation (UV) over Antarctic plants since the 1970s. Studies of UV induced DNA damage in three Antarctic moss species have shown Ceratodon purpureus to be the most UV-tolerant…
Climate change is predicted to affect high latitudes first and most severely, and major changes in temperature, wind speed and stratospheric ozone have already been observed in Antarctica.