Findings regarding ectotrophic stability of Norway spruce forest of the Krkonoše and Orlické Mountains based on mycorrhiza studies

Abstract

 Analyses of root mycorrhizal samples and monitoring of fruiting bodies of macromycetes from Norway spruce stands at mountain and foothill localities in the Krkonoše and Orlické Mts. provided several data series allowing to assess and compare (albeit somewhat preliminarily) mycorrhizal conditions and macromycete incidence related to stand ages and  location conditions. The overall mycorrhizal conditions in young (10 years old) and older (80 years old) stands on formerly agricultural soils are comparable to those in 80- and 90-year-old forests growing on standard forest soils, but young spruce stands in the Orlické Mts. replanted on forest soils do not surprisingly show any favourable mycorrhizal characteristics. The research documents a marked diversity of macromycete species composition in mountain spruce stands compared to foothill spruce stands on former agricultural soils. While in the younger mountain spruce stands of the Orlické Mts. the expansion of macromycete species composition began to develop in a similar fashion to that in the Krkonoše Mts., the comparison of older (80-year-old) stands on formerly agricultural soils in the Orlické Mts. foothills and Krkonoše Mts. implies that the macromycete species composition developed quite differently but with a similar success.

Fine roots of Picea abies compensate for drought stress in the rainfall reduction experiment

“…The density of active mycorrhizae compared to relatively higher and more fluctuating density of nonactive mycorrhizae can surprisingly indicate a significant fluctuation in the lifetime of active mycorrhizae. High temporal dynamics of the density of active and nonactive mycorrhizae were also observed in previous studies (e. g. Blasius et al, 1989;Pešková, 2007;Pešková et al, 2011).…”

Long term observation of mycorrhizal status and above-ground fungi fruiting body production in oak forest

“…The aim of the study was also to ascertain to what extent the methodology used in montane spruce (Fellner and Landa 2003;Pešková 2007;Pešková et al 2011) is representative on oak plots at middle and lower altitudes. It was a case of our longest series of observation and the methodology taking up the methods standardised in the past, had to be adapted.…”