Epigeic beetles (Insecta: Coleoptera) in montane spruce forests under long-term synergistic chronic effects in the Giant Mountains (Central Europe)
2001
Bohac, J. (Academy of Sciences of the Czech Republic, Ceske Budejovice (Czech Republic). Institute of Landscape Ecology)
Comparison of epigeic beetle communities on six plots with different intenzity of damage of mountain spruce forest indicated, that the beetle community of strongly damaged forest was significantly different from other plots with less damaged spruce forests and with better present health status. The frequency of forest beetle species was considerably lower (less than 55%) and the frequency of ubiquitous species greater (more than 10%) in the plot with strongly damaged spruce forest than on other plots. On the other site the high frequency of rare mountain species living in non-forested areas or living both in forested and unforested ecosystems was found (37%) on plot with greatest damages. The absence of non flying beetle species is typical for this plot. The ecological characteristics of beetle communities on other plots of spruce forest with better health status were very similar. The results of studies enabled to identify the critical stage of beetle communities in destroyed mountain spruce forest. The frequency of ubiquitous beetle species was higher than 10% and the frequency of forest species less than 55%. The index of community in dying forest increased above 70 and non-flying species absent
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