Latest publications
Results 2451 to 2475 of 8726
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.
Greenslade, Penelope and Potapov, M. 2008. A new genus and species … of Isotominae (Collembola: Isotomidae) from cushion plants on … sub-Antarctic Macquarie Island. Kanunnah 2: 87–97. ISSN 1832-536X. A new genus of a blind, white isotomid, Azoritoma n. gen. and new species … A. macquariensis…
Bacteria play a key role in the world’s oceans, supporting nutrient remineralisation and … mediating carbon transfer. Little is known about annual changes in bacterial concentration, production … and metabolism during the extreme seasonal changes in biological productivity in Antarctic … waters.
Despite being a major pathway for carbon flow in aquatic systems, little is known about … annual changes in microzooplankton grazing in Antarctic waters and its top-down control of phytoplankton.
The effects of ambient solar UV radiation (280 to 400 nm) were determined using 3 natural … marine protist communities incubated in 650 l tanks (minicosms) for 13 to 14 d over the summer … of 2002¨C2003 at Davis Station, Antarctica.
The influence of biotic and environmental variables on the abundance of virus-like … particles (VLP) and lysogeny was investigated by examining 10 Antarctic lakes in … the Vestfold Hills, Antarctica, in the Austral Spring.
Tide gauges remain the fundamental instrument used to measure water level in the coastal environment. Issues … surrounding the calibration and vertical datum control of tide gauges are therefore fundamental in studies involving … the determination of absolute sea level and its variation over time.
Pressure variations at 11 Antarctic and 7 Arctic sites show significant day-to-day correlations with a proxy for the … meteorological generators (thunderstorms and strongly electrified clouds) of the atmospheric circuit. The proxy is … derived from electric field measurements at Vostok (78.5ºS…
The atmospheric electric field Ez measured at the Antarctic Plateau station of Vostok made it possible to estimate … the role of the main generators in formation the global electric circuit. In the polar region during the periods with good … weather conditions the classical diurnal curve…
The temeperate glaciers of the sub-Antarctic islands are located on a cold, wet, maritime environments making them … valuable climatic indicators for the Southern Ocean. The changes in the glacier fronts on Heard, Kerguelen, Crozet, Marion, Bouvetoya, South Gerogia…
Because of the vast reservoirs of water mass held in the great ice sheets of Antarctica and Greenland, determining the … role that they play in global sea level has long been a major challenge of polar science. But until recent advances in … measurement technology…
Pressure variations at 11 Antarctic sites and 7 Arctic sites have been examined and … show significant correlations with a daily proxy for the output of the meteorological … generators of the global atmospheric circuit.