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Arctic Deserts ecosystems

Eurasia is the biggest continent of the World. Because of the huge size of Eurasia, all types of ecosystems and climatic belts are represented, from arctic deserts up to tropical rain forests. Accordingly, some characteristic examples will be given here with special attention to biogeochemical provinces where biogeochemical exposure pathways induce the relevant diseases. [Pg.275]

This part of Tundra ecosystems covers the northern coasts of the continent and the southern part of the North American archipelago. In the north it is bounded by the Arctic desert and in the south by the Boreal Taiga Forest ecosystems. [Pg.320]

Water has been applied to several arctic ecosystem types to simulate increased precipitation, with the expectation that the additions would enhance plant production. The production could be stimulated either directly as a response to decreased drought, most likely to occur in dry polar deserts or semideserts (Aleksandrova, 1988 Bliss et ai, 1984), or indirectly by enhancement of nutrient supply to plants. For instance, increase in soil moisture focilitates the transport of nutrients toward the plants roots (Chapin ct al, 1988) and creates favorable environments for N fixation (Gold and Bliss, 1995). [Pg.145]


See other pages where Arctic Deserts ecosystems is mentioned: [Pg.313]    [Pg.2646]    [Pg.244]    [Pg.148]    [Pg.262]   
See also in sourсe #XX -- [ Pg.165 ]




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