Some rare plant species in the Aktolagay cretaceous massif (Republic of Kazakhstan): the characteristics of populations

Cretaceous massifs of the Eurasian continent is unique not only for its geological features, but also peculiar flora, therefore, identification and study biodiversity these objects currently an urgent task. Comprehensive studies flora vegetation Aktolagay cretaceous massif (Republic Kazakhstan) were carried out in 2019. One aspect was consideration ecological biological features several plant species characteristic this territory. The research devoted to 5 species: Astragalus lasiophyllus Lеdеb., vulpinus Willd., Matthiola tatarica (Pall.) DC., Eremurus inderiensis (M. Bieb.) Regel, Tragopogon ruber S.G. Gmel. on territory Aktolagai. coenopopulations are located lower parts slopes, as well aligned areas at foot substrates, sandstone soils. arithmetic density studied CPs varies from 2.2 6.6 ind./m2, effective 1.6 4.9 ind./m2. belong normal incomplete ones. most typical feature absence seedlings, juvenile senile individuals spectrum, while peak falls mature generative individuals, Mattiolla - virginile individuals. Coenopopulations heterogeneous their type ("delta-omega" criterion): one young, CP transitional, maturing, Tragogon mature. recruitment index populations rather high (0.36–3.05), agting equal or close zero. Most morphometric show low levels variability plasticity.