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The Antarctic environment is extremely cold, windy and dry. Ozone depletion has resulted in increasing ultraviolet-B radiation, and increasing greenhouse gases and decreasing stratospheric ozone have altered Antarctica's climate.
Antarctica has experienced major changes in temperature, wind speed and stratospheric ozone levels over the last 50 years. Whilst West Antarctica and the peninsula have shown rapid warming and consequent ecosystem change, East Antarctica appeared to be little impacted by climate warming…
The susceptibility of three East Antarctic moss species to UV-B radiation was examined by measuring accumulation of cyclobutane pyrimidine dimers under natural sunlight during the austral summer season of 2002/03.
Living in a frozen desert, Antarctic mosses are characterised by the ability to survive desiccation and can tolerate multiple desiccation-rehydration events over the summer growing season. As a result of recent ozone depletion…
Growth conditions in Antarctica are extreme, and the few plants that can … grow there are exposed to a highly seasonal, rapidly variable and often … extreme climate. In recent decades, these plants have also been exposed to … increased levels of UV-B radiation (UV-BR)…
Concentrations of UV-B absorbing pigments and anthocyanins were measured in three moss species, over a summer growing season in Antarctica. Significant seasonal differences were found in the potential UV-B screening pigments. The most exposed species, Ceratodon purpureus…
Antarctica has been exposed to increases in ultraviolet-B (UV-B) radiation as a result of … ozone depletion for several decades. In addition, climate change will alter temperature and … water availability to plant communities over the next century. Recent studies…
The impact of ambient ultraviolet (UV)-B radiation on the endemic bryophyte, Grimmia … antarctici, was studied over 14 months in East Antarctica. Over recent decades, Antarctic … plants have been exposed to the largest relative increase in UV-B exposure as a result of … ozone depletion.
Two vascular plant species (hair grass Deschampsia antarctica … and herb Acaena magellanica) from sub-Antarctic Heard Island … were sampled on 5 days between December 2003 and February … 2004.
Over recent decades, Antarctic plants have been exposed to the … largest relative increase in UV-B exposure as a result of ozone … depletion. Open-sided plexiglass screens were used to reduce UV … levels by 77% over turves of the endemic Antarctic bryophyte, Grimmia antarctici…
Antarctic vegetation is exposed to elevated levels of UV-B … radiation (UVBR) as a result of ozone depletion. Three species of … co-occurring Antarctic bryophytes, Bryum pseudotriquetrum…