Ukrainian Journal of Forest and Wood Science

The article presents the results of the analysis of the ecological structure of the exotic arboreal floras of the botanical gardens of Ecuador and the Steppe of Ukraine in relation to light, heat, fertility and soil moisture. Among the hygromorphs in both regions of the study, the most represented is the group of mesophytes, in relation to the fertility of the soil, mesotrophs have the largest share, in relation to light, more species in the ecophagous group of heliophytes. Ecogroups of thermomorphs have the greatest difference, since in the Ecuadorian Ecoregion the overwhelming majority of species belong to the subgroups of heat demanding: megamezoterms, megatermas, ultramegatherm (70.2 % of the total number of species), only a small part of mesoterms and microzems (19.4 % and 10 4 % respectively). However, in the botanical gardens of the Steppe of Ukraine, a subgroup of the microteam was found to be representative (58.8 %, considering the transitional subgroup of mesomicrotromes), the second place will be occupied by the mesotherm (31.0 %) and an insignificant part of megamezomeres (10.2 %).

exotic arboreal flora, botanical garden, Ecuador, Steppe of Ukraine, ecological structure