Effect of tree seed crop on small mammal populations and communities in oak and beech forests in the Drahany Upland (Czech Republic)
P. Čermák, J. Ježekhttps://doi.org/10.17221/4539-JFSCitation:Čermák P., Ježek J. (2005): Effect of tree seed crop on small mammal populations and communities in oak and beech forests in the Drahany Upland (Czech Republic) . J. For. Sci., 51: 6-14.
(81 individuals), Apodemus sylvaticus (32), Clethrionomys glareolus (29) and 4 individuals of insectivores – Sorex araneus. Apodemus flavicollis dominated in both types of stands. In the most numerous Apodemus flavicollis, body dimensions were compared between oak and beech stands; the differences were not significant. Species diversity (owing to the presence of Sorex araneus) is slightly higher in oak stands (diversity index H‘ = 1.60) as compared with beech stands (H‘ = 1.43). From the aspect of faunistic similarity, it is the case of very similar communities (Re = 97.3; IBC = 0.79). In all trapped individuals, basic body parameters were measured. In the oak forest, a higher total abundance was determined in all species as compared with the beech forest. Rodent populations responded to the poor crop of beechnuts and acorns in 2002 by a decline in numbers and to the good seed crop in 2003 by an increase in numbers (Apodemus spp.). Another response was the prolongation of reproduction period. In stomachs of the rodents caught in 2003 the percentage of starch granules of consumed food was superior to 2003.
small mammals; oak forest; beech forest; seed crop; Apodemus spp.; Clethrionomys glareolus