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1 February 2008 Conspicuous Demographic and Individual Changes in a Population of the Common Vole in a Set-Aside Alfalfa Field
Eva Jánová, Marta Heroldová, Josef Bryja
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Abstract

The termination of agricultural production in intensively managed fields leads to the succession of weed communities and to changes in the vegetation cover and food supply for animals. We studied a population of the common vole on a regularly managed alfalfa field in southern Moravia (Czech Republic) during two and a half consecutive years. When the field was set aside, the vegetation cover transformed significantly and we studied the same vole population for the next three years. Multi-annual variation in population size disappeared; maximal abundances decreased, and mean body size tended to be lower in the weed-filled habitat. We observed conspicuous seasonal patterns in the proportion of breeding females, sex ratio and in litter size variation; however these patterns did not depend on the field management regime. The set-aside field had a strong effect on vole population dynamics; however, other well-designed studies are needed to distinguish between the possible causal processes (immigration, natality or survival) of the observed changes.

© Finnish Zoological and Botanical Publishing Board 2008
Eva Jánová, Marta Heroldová, and Josef Bryja "Conspicuous Demographic and Individual Changes in a Population of the Common Vole in a Set-Aside Alfalfa Field," Annales Zoologici Fennici 45(1), 39-54, (1 February 2008). https://doi.org/10.5735/086.045.0104
Received: 17 January 2007; Accepted: 1 November 2007; Published: 1 February 2008
JOURNAL ARTICLE
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