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Satellite tracking devices were used to examine the at sea movements of southern and … northern giant petrels from Macquarie Island during the Austral summers of 2005–06 … and 2006–07. Time spent at sea for nine northern giant petrels (four breeding adults, five … recently fledged juveniles)…
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.
[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…
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.
This report presents the application of the taxonomic guidelines developed by the … Taxonomy Working Group to three pairs of taxa currently listed under Annex 1 … (Attachment 1) of the Agreement on the Conservation of Albatrosses and Petrels … (ACAP): 1. Amsterdam and Wandering Albatross…
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…
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.
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.
The capacity of the polar flora to adapt is of increasing concern given current and predicted … environmental change in these regions. Previous genetic studies of Antarctic mosses have been of limited … value due to a lack of variation in the markers or non-specificity of the methods used.
Summary … • Studies of ultraviolet (UV) light-induced DNA damage in three Antarctic moss … species have shown Ceratodon purpureus to be the most UV tolerant, despite … containing lower concentrations of methanol-soluble UV-screening compounds … than the co-occurring Bryum pseudotriquetrum.
Summary … 1. Previous studies of Antarctic clonal moss populations using RAPD markers have reported … extraordinarily high levels of genetic variation. This has been claimed to reflect somatic mutation, possibly resulting from elevated UV-B radiation. 2.