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Dynamics of oak mycorrhizas

Author

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  • V. Pešková

    (Forestry and Game Management Research Institute, Jíloviště-Strnady, Czech Republic)

Abstract

A decline of macromycetes, especially of ectomycorrhizal species, has been described in the last decade in various parts of Europe. These changes are attributed to direct or indirect effects of air pollution. In Central Europe these changes correlate with visual damage of forest. Many ectomycorrhizal fungi seem to be very suitable bioindicators of the disturbance of forest ectotrophic stability. Stages of this disturbance can be linked directly to particular phases of impoverishment of ectomycorrhizal mycocoenoses. These conclusions have been obtained from long-term research on permanent plots (1,000-2,500 m2) in spruce and oak forests in the Czech Republic, but it seems that they are valid generally. For the quantification and study of mycorrhizal activity a special method has been developed and applied. The analyses of mycorrhizas from the same plots in the period 2000-2002 indicate large mycorrhizal dynamics. These data correlate with data obtained from a fruiting bodies survey. Both the percentage of ectomycorrhizal species and the ratio of active mycorrhizas are highly sensitive to outer impacts (air pollution, acidification, fertilization). Their decrease is in correlation with the strong defoliation of trees and can be used for the prediction of further development in comparable stands.

Suggested Citation

  • V. Pešková, 2005. "Dynamics of oak mycorrhizas," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 51(6), pages 259-267.
    • Handle: RePEc:caa:jnljfs:v:51:y:2005:i:6:id:4562-jfs
    DOI: 10.17221/4562-JFS
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