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001-es BibID:BIBFORM070359
Első szerző:Misik Tamás (biológus, ökológus)
Cím:Changes of the shrub structure in a Turkey-oak forest after a tree decline in North-Hungary / Tamás Misik, Béla Tóthmérész, Imre Kárász
Megjegyzések:Similar to other European countries there was an oak decline at the end of the 70's in Hungary; 68% of the Quercuspetraea specimens of the forest's trees died at the site. This decline resulted in an opening of the canopy; the canopycover decreased from 80% (1972) to 36% (2007). The aim of our study was to analyse the structural changes in theforest interior after oak decline. We focused on those specimens which were higher than 8 m (so-called secondarytrees). Height and diameter of these specimens were registered; their location and cover percentage were mapped from1972. We focused on the following questions: (1) What are the most important structural changes in the forest interiorafter the oak decline? (2) Which woody species are the most successful shade-tolerant species and what are thepossible ecological reasons of this process? In 2007, there were 130 specimens of Acer campestre, 22 specimens ofCornus mas and 4 specimens of Acer tataricum between 8 - 13 m height and created a secondary tree layer below theprimary tree layer of oaks. The mean cover of these species increased remarkably after the tree decline. The canopycover was 32% of high shrub layer cover in this newly formed layer. Our study reveals that the forest responded to theoak decline by structural changes in the shrub layer and three woody species of secondary tree layer compensated theremarkably loss of tree canopy cover.
Tárgyszavak:Természettudományok Biológiai tudományok idézhető absztrakt
Oak decline
Acer campestre
Quercus petraea
canopy cover
secondary tree layer
Megjelenés:Journal of Agricultural Extension and Rural Development 4 : 9 (2012), p. 288. -
További szerzők:Tóthmérész Béla (1960-) (ökológus) Kárász Imre (1949-) (biológia-kémia szakos tanár)
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