Issue № 2 |
Methods of ecological investigations |
pdf-version |
Korosov Andrey | Petrozavodsk state university, Petrozavodsk, Lenina st., 33, korosov@psu.karelia.ru |
Keywords: simulation model population dynamics age structure reproductive rates multiannual averages field vole |
Summary: A model simulating the dynamics of the field vole (Microtus agrestis) numerosity during one year was built. The purpose of modeling was to reproduce the values of population characteristics, averaged over a long period of field observations. It was found that long-term average population characteristics can not be observed in any one year of simulated population life. A model population with an average long-term dynamics of age structure can not sustain long-term population dynamics. Long-term average values of population characteristics contradict each other, because they are obtained by averaging data for different phases of population dynamics and composition of the population. © Petrozavodsk State University |
Received on: 29 June 2012 Published on: 09 July 2012 |