Demographic peculiarities of the Linum flavum (Linaceae) cenopopulation in the Ukhtinsky steppe state (Penza region)

In the tract Ukhtinskie stepi Linum flavum is a part of forb real meadows, long-rhizomatous steppe meadows, forb meadow steppes, forb real steppes. In weakly disturbed communities, it plays the role of an assector with a projective coverage of no more than 2-4%. In disturbed sparse communities, its presence increases to 10-20 abs.%. The ontogeny of L. flavum includes 3 periods and 9 age states; morphogenesis consists of the phase of the primary shoot and the primary bush. The cenopopulation is characterized by high ecological density, bimodal spectra with a high participation of juvenile and / or immature first subgroup individuals and early generative and mature generative individuals, a high ability to self-maintain the population through seed reproduction.