Аналіз екологічної структури дендроекзосозофлор ботанічних садів Еквадору та Степу України

Анотація

Abstract. 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 %).
Keywords: exotic arboreal flora, botanical garden, Ecuador, Steppe of
Ukraine, ecological structure.