Titlebook: Arctic and Alpine Biodiversity: Patterns, Causes and Ecosystem Consequences; F. Stuart Chapin,Christian K?rner Book 1995 Springer-Verlag B

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0070-8356 ations are having increasing impact on the earth system, such that we are altering the biospheric carbon pools, basic processes of elemental cycling and the climate system of the earth. Because of time lags and feedbacks, these processes are not easily reversed. These alterations are occurring now m

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Exergy Analysis and Human Body Behavior,ight be particularly sensitive to such changes because life in the Arctic is strongly regulated by climatic constraints. Any change in climatic conditions is, therefore, likely to affect the arctic biota more than in more benign environments where biological regulation may be more important (Callaghan and Emanuelsson 1985).

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Causes of Arctic Plant Diversity: Origin and Evolutionic ones have become important as we recognize the need for understanding diversity at various levels of organization, from inclusive to restrictive, from communities to genotypes. Whatever the level of our focus in the hierarchy, we must ultimately have a precise knowledge of the component taxa.

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Origin and Evolution of the Mountain Flora in Middle Asia and Neighbouring Mountain Regionsoras developed and to which extent migration of plant species contributed to diversity. We will also investigate the tectonic history and more recent glacial history as decisive factors for the development of species richness in the mountains.

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Implications for Changes in Arctic Plant Biodiversity from Environmental Manipulation Experimentsight be particularly sensitive to such changes because life in the Arctic is strongly regulated by climatic constraints. Any change in climatic conditions is, therefore, likely to affect the arctic biota more than in more benign environments where biological regulation may be more important (Callaghan and Emanuelsson 1985).

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