Scientific journal
Scientific Review. Biological science
ISSN 2500-3399
ПИ №ФС77-57454

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SPECTRAL ANALYSIS OF GYPSY MOTH OUTBREAKS MULTIYEAR DINAMICS IN THE URALS

Koltunov E.V. 1 Erdakov L.N. 2
1 Botanical Garden of Ural Branch RAS
2 Novosibirsk State Pedagogical University (630126
The spectral analysis of Gypsy moth outbreaks dynamics of different geographic populations of the Urals and Selyaninov hydrothermal coefficient is performed. Studies have shown that the three of them (the “European”, “Orenburg” and “Bashkortostan”) for power prevailed same cycle (7,5-8,8 years). In the other two (“Sverdlovsk” and “Chelyabinsk”) was absent and replaced by 11.5 years. In “Sverdlovsk” population dominated 43-year cycle, which was detected in populations in Europe and the Chelyabinsk region. All high-frequency cycles (2-3-year-old and 3-5-year-old) in all studied populations were are identical. Populations in more southern latitudes had the dominant power of outbreaks cycles were shorter than the more northern populations. In the least favorable climatic conditions more low-frequency cycle- 43-year is prevailed. Population dynamics spectra are very similar to the gypsy moth spectra. Obviously, the gypsy moth population cycles be supported by drought ciclicity and genetic characteristics of the species. We revealed the hidden of population dynamics cycles, which absent on the figures, because their masks difficult move of population dynamics. Results showed that the representation of population dynamics on the frequency scale (in the form of the spectrum) give new biological information.