Contribution of resident and nonresident populations of small mammals to the results of irretrievable requisitioning method
A. A. Kalinin1, I. F. Kupriyanova2, D. Yu. Aleksandrov1
1Severtsov Institute of Ecology and Evolution of RAS, Moscow, Russia
2Pechora-Ilych State Nature Reserve, Respublika Komi, Russia
Keywords: мелкие млекопитающие, учеты численности, мечение с повторным отловом, плотность, нерезидентная активность, small mammals, methods of catching, capture-recapture method, population density, dispersalsmall mammals, methods of catching, capture-recapture method, population density, dispersal
Abstract
We have compared population demography parameters of common small mammals in trap lines obtained by two methods. We applied capture-mark-recapture method (CMR) to estimate resident population density and non-resident activity, and irretrievable requisitioning method (IR) was used to estimate abundance. Though the IR reflects the abundance of small mammals in general it can distort the species ratio in community. Multiple regression analysis revealed that the results obtained with IR were influenced by both resident population density of the species and non-resident activity of small mammals. These factors together explained 88 % of the variance and their contributions in multiple correlation model were r = 0,39 (residents) and r = 0,46 (non-residents) as valued by semipartial correlation.
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