July 2017, № 8 (208), pages 84-86

doi: 10.25198/1814-6457-208-84

Tarasenko S.N., Safonov M.A. SPATIO-TEMPORAL DYNAMICS OF THE MORPHOMETRIC PARAMETERS OF THE LARGE GOPHER IN THE SOUTHERN URALSThe effects of climate and anthropogenic influences on the biosphere are shown in different scales. These factors largely determine the population status of plants and animals, their density, reproductive cycle and distribution of the species; the structure and biodiversity of ecosystems. One of the adaptations to environmental conditions is change of morphological parameters of living organisms, i. e. the variation of the significant parameters to improve adaptation of an organism to new environmental conditions. The object of studying the dynamics of morphological parameters was a large gopher (Spermophilus major Pallas, 1779. Long-term studies of the variation of two parameters — mass and body length showed that the trends of variation of characteristics by year were different. Correlation between average body weight and coefficient of variation of this indicator by years was not significant; between body length and coefficient of variation was noted a significant negative correlation. Analysis of trends in morphological parameters in space, i.e. comparison of mean values of indicators and their coefficients of variation with similar overall aggregate data on the morphometry of the big gopher in the region, showed that in most districts the average body mass is higher than the regional average. Probably the tendency to decrease the average body mass of individuals of the large ground squirrel in forest-steppe areas of the region can be explained by an insufficient number of potential habitats; the body length is a more stable option. Key words: large gopher, Spermophilus major, morphological characteristics, spatial-temporal dynamics; the coefficient of variation, Orenburg oblast.

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About this article

Authors: Tarasenko S.N., Safonov M.A.

Year: 2017

doi: 10.25198/1814-6457-208-84

Editor-in-chief

Sergey Aleksandrovich
MIROSHNIKOV

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