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- W114408577 abstract "The paper presents the results of a research into the geoecosystems of polar oases located on King George Island in the South Shetlands in the Maritime Antarctic. The recession of glaciers brings about an expansion of ice-free areas, landform metamorphoses, changes in land cover, redeposition of sedimentary covers, changes in the water cycle and mineral circulation, and finally a transformation of landscapes in the ice drainage basin of Admiralty Bay. The increase in ice-free areas observed in the 20th century is variable but quite rapid (Zwolinski 2007). Corresponding to ice-free areas, the geoecosystems of polar oases have a relatively narrow range of geomorphic functioning since they are largely determined by the duration of snow and glacier covers and the accessibility and amount of solar energy reaching the Earth surface. The great significance of the geoecosystems of polar oases in the modern sub-Antarctic zone is due to the following: – areas emerging from under ice, which are sites of a fast landform evolution, fast changes in the land cover and fast landscape transformations, and consequently of a rapid geosuccession due to the rebuilding of the internal structure of those geoecosystems, – areas with distinct qualitative changes, mainly involving energy and matter, – extensive, exposed areas susceptible to all morphogenetic factors such as sunshine, wind, water, snow, ice, gravitation and, increasingly, man, – degraded periglacial landforms, highly sensitive to even the slightest climate change, – manifestations of succession and biological colonisation, including communities of lichens, mosses and lower plants, and colonies of birds and pinnipeds as well as communities of the freshwater fauna, – the potential space for settlement (at present mainly in the form of scientific stations and research sites), conducting of various types of economic activity (mainly mining), and a growing penetration by tourists." @default.
- W114408577 created "2016-06-24" @default.
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- W114408577 date "2007-01-01" @default.
- W114408577 modified "2023-10-02" @default.
- W114408577 title "The geoecosystem of polar oases within the ice drainage basin of Admiralty Bay, King George Island, Antarctica" @default.
- W114408577 hasPublicationYear "2007" @default.
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