A contribution towards the knowledge of the effect of small mammals on the regeneration of forest trees in selected stands of the Kelečská pahorkatina Upland (district of Přerov, Czech Republic)

Abstract

Effects of small mammals were studied on the regeneration of trees in a forest reserve and on forest plantation in the area of the Kelečská pahorkatina Upland with a view to stands of European beech (Fagus sylvatica). Inspection of bark damage was carried out and artificial regeneration was markedly more susceptible to damage (p < 0.01). Of the total number of monitored beech trees 57.5% were damaged in artificial regeneration compared to 12.7% in natural regeneration and 15% died as against 0%. The only pest proved by trapping was Myodes glareolus although damage of tree bases could mean damage caused by species of the genus Microtus. With respect to the large crop of seeds (beech nuts) in 2006, it is possible to expect increase in the population of rodents in the next season and thus increased damage to trees. Results obtained show that it is very important to support natural regeneration and as for planting to minimize the herb layer cover in the vicinity of trees, which represents the optimum environment for the occurrence of rodents.

Keywords

• artificial regeneration
• natural regeneration
• small mammals
• <i>Myodes glareolus</i>
• <i>Microtus</i> spp.