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Details van artikel 22 van 25 gevonden artikelen
| Titel: |
The role of granivorous rodents in beech forest regeneration in the Beskydy Mts. (Czech Republic). |
| Auteur: |
Marta Heroldová Josef Suchomel Luboš Purchart Miloslav Homolka |
| Verschenen in: |
Casopis Beskydy |
| Paginering: | Jaargang 1 (2008) nr. 2 pagina's 131-134 |
| Jaar: |
2008 |
| Inhoud: |
Forest seed crop, particularly beechnuts and acorns, significantly influence the population dynamics of granivorous rodents negatively affecting the development of forest stands. In seven beech stands of various age and at various altitude, we determined the actual food supply for seed--eating species. The average feeding supply biomass in autumn 2007 was 23.23 g . m2. To evaluate effects of seed--eating species on forest regeneration we found out information on the population density of seed--eating species (wood mouse 12 individuals/ha; bank vole 1 ind./ha) but also data on the consumption of forest seeds by the species. Under laboratory conditions, daily consumption of beechnuts was determined for two dominant forest species as bank vole (Myodes glareolus /Pallas/) and yellow--necked mouse (Apodemus flavicollis /Mel./). Our test took 10 days. In M. glareolus (n = 5; mean body mass 21 g), daily consumption ranged from 2.2 to 3.4 g (mean 2.8 g) of beechnuts (seeds of Fagus sylvatica /L./), i.e. on average 12 beechnuts per day. In A. flavicollis (n = 5, mean body mass 26 g), daily consumption ranged from 3.0 to 5.5 g (mean 4.25 g), i.e. about 19 beechnuts per day (0.23 g = mean weight of 1 beechnut). In any of the species, waste feeding did not occur during beechnut consumption. The weight of individuals was in correlation with the weight of consumed food (r = 0.91, p < 0.01). Both of these rodents were able to lower the harvest by removing 43% of the total amount of the seeds. Results obtained can contribute to the evaluation of the effect of M. glareolus and A. flavicollis on seed losses and thus to the elucidation of their importance in the process of the natural regeneration of broadleaved species. |
| Uitgever: |
Mendel University, Brno (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 22 van 25 gevonden artikelen
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