NUMBER OF MOUSE-LIKE RODENTS AND THE STRUCTURE OF THEIR COMMUNITIES ON SAKHALIN
V. A. Nesterenko1, O. A. Burkovskii2
1Federal Scientific Center of the East Asia Terrestrial Biodiversity FEB RAS, Vladivostok, Russia
2Sakhalin Energy Investment Company, Yuzhno-Sakhalinsk, Russia
Keywords: грызуны, структура сообщества, численность, Сахалин, rodents, community structure, number, Sakhalin
Abstract
On the basis of a long-term comparative study of two rodent communities of Sakhalin Island, similar in their species composition, patterns of transformation of their structure are considered. Analysis of the dynamics of species abundance and dominance structure showed that monodominant community structure on Northern Sakhalin is characterized by the absence of interannual rearrangements and is very stable, and the formation of the total number of rodent communities occurs only depending on the abundance of M. rutilus , whereas the southern part of the island is characterized by two structure type: monodominant with a predominance of either M. rutilus or M. rufocanus , or bidominant, when both species act as co-dominants. The number of secondary species varies independently from dominants. Abundance of M. rutilus and M. rufocanus within the same community change synchronously, while the conjugation of the population cycles of these species in the southern and northern communities is absent.
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