Zur Frage der Überlebensstrategien von Pflanzen in der subnivalen Stufe des Kaukasus

摘要: Abstract On survival strategies of plants in the subnivale belt Caucasus. - In higher part Caucasus (Elbrus Mountains, 3500 m) a small phytochore has been investigated, particularly protected by its position being surrounded with big rocks and characterized few species distant patches plant growth. The ecophysiological measurements have shown that are covered thin stratum ice their surface warms up only during late morning; short, evident maximum follows at noon. single groups can be distinguished on behalf plasticity stomata diffusion resistence. It assumed able to avoid waterstress considering intense heat ends non compact gravel substrate.