engleski

Small rodents as the cause of decrease in young narrow-leaved ash tree growth (Fraxinus angustifolia Vahl)

The paper deals with the results of a six-year of research on the influence of small rodents on sanation process and renovation of pedunculate oak forest stands (Genisto elatae-Quercetum roboris caricetosum brizoides Ht. 1938.) by narrow-leaved ash seedling plants (Fraxinus angustifolia Vahl). In spring 1996, damages from small rodents in the form of various intensity bites on the sample of 2580 two-year old narrow-leaved ash seedling plants were recorded in the lower parts of the stalk in 2197 seedling plants (85.16 %) According to the damage intensity, the plants were divided into three categories. In December 2000, the increment of 31 trees was analysed. Having analysed the variance of diameter (F=117.14 ; df=2 ; p<0.0001) and height (F=128.41 ; df=2 ; p<0.0001) of trees, a significant difference between damage categories has been established. Scheffe&#8217; s post-hoc test shows a statistically significant difference between damage categories, annual radial growth and their interaction.

reforestation; narrow-leaved ash (Fraxinus angustifolia Vahl); small rodents

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