Climatic background of cyclic phenological rhythms of introduced Ficus L. species

The results of investigation of phenological cyclic patterns of seven species from genus Ficus L. in conditions of introduction are given. We propose the variant of phenological spectrum analysis with the periodogram method. Analysis shows that the species ability to cyclic development connect with some climate factors in natural geographical ranges. Those factors are precipitation amount in the most dry or/and the most cold quarter of year.