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Nature of Inner Asia

Bibliographic description:
Erdakov L. N.
,
Moroldoev I. V.
,
Kozulin V. M.
CYCLICITY OF BLACK-CAPPED MARMOT (MARMOTA CAMTSCHATICA DOPPELMAYERI) NUMBER IN BARGUZINSKY NATURE RESERVE // Nature of Inner Asia. - 2018. №3(8). . - С. 92-100.
Title:
CYCLICITY OF BLACK-CAPPED MARMOT (MARMOTA CAMTSCHATICA DOPPELMAYERI) NUMBER IN BARGUZINSKY NATURE RESERVE
Financing:
Codes:
DOI: 10.18101/2542-0623-2018-3-92-100UDK: 599.322.2
Annotation:
The article studies the long-term cyclicity of the black-capped marmot population (Marmota camtschatica) on the Barguzin Range. Pattern of population dynamics in large and medium colonies remains stationary, while in small settlements a noticeable negative trend is observed.
Visual evaluation of the population fluctuation spectra in high-frequency bands shows their similarity, whereas in the middle and low frequencies there is a wide variety of spec- tra. Fluctuations in ten-, five- and two-year frequency bands are observed for long term population dynamics of Marmota camtschatica.
The results of long-standing marmot counts show that a number of marmots is subject to great annual changes, and their amplification have a cyclicity of three and six years. We give a forecast of changes in number of black-capped marmots in Barguzinsky Reserve for the next five years. According to this forecast, the marmot population will decrease in 2018, and then there will be a gradual ascent by 2021. The observed low population after 2013 is probably a part of large (≈ 20-year) cycle. Next increase in the number of mar- mots is expected only in 10–15 years.
Keywords:
cyclicity; population dynamics; population cycles; black-capped marmot; Marmota camtschatica; the Barguzin Range, Barguzinsky Reserve.
List of references: