Age Structure of Herbaceous Plant Populations under Stress
(an Example of Crepis tectorum L.)

M. R. Trubina and A. K. Makhnev

Botanical Gardens, Ural Division, Russian Academy of Sciences, ul. Vos’mogo Marta, 202, Ekaterinburg, 620114 Russia

Received April 15, 1998

Abstract—Specific features of the age structure of herbaceous plant populations are considered with reference
to annual–biennial monocarpic species at different stress levels. Possible ways of adaptation to stress, in partic-
ular, the transition of populations from r-strategy to K-strategy, are analyzed.

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