DOI: 10.5593/SGEM2014/B32/S14.064


M. Pavlik
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-14-8 / ISSN 1314-2704, June 19-25, 2014, Book 3, Vol. 2, 477-484 pp

The National Nature Reserve (NNR) Hrončecký Grúň is situated in Central Slovakia in the Poľana Mountains, and from the viewpoint of nature protection it belongs to the Protected Landscape Area Poľana, which is included among the Biosphere Reserves of UNESCO. The natural forest is composed of seven climax woody species with high qualitative and quantitative production abilities: European beech (Fagus sylvatica L.), European ash (Fraxinus excelsior L.), sycamore maple (Acer pseudoplatanus L), Norway maple (Acer platanoides L.), wych elm (Ulmus glabra Stok.), Norway spruce (Picea abies L. Karst.) and silver fir (Abies alba Mill.). Evaluating the health status of plants is done on the research transects that were stabilized in 1991 at the characteristic of each subcompartment and at that time were made up of 100 live trees. The assessing the health status of the trees was followed according to the rules of paneuropean monitoring, and one of the most important indicators of the vitality of the tree is considered to be the loss of leaves or needles - defoliation. The largest decrease of the living trees was recorded for elm (95.7%), it is also great for a fir (46.2%), spruce (40.9%) and ash (39.6%). The smallest loss of trees recorded beech (23.7%) and sycamore (25.5%). Similar ranking of trees may be generated in the evaluation of defoliation. An important element in a comprehensive assessment of the status and prospects of forest stands and the future remains spectrum valuation species of higher fungi. The overall share of the wood-inhabiting species is up to 63%, of which parasitic species constitute more than 23%. Saprophytic species have available a huge amount of substrate from dead trees and parasitic species in turn the amount of physiologically weakened and mechanically damaged trees. Occurrence of terrestrial, especially mycorrhizal fungal species, however, compared decaying fungi significantly lower. Mycorrhizal percentage reaches only about 18%. The main reason is probably declining vitality of mature trees and lack of natural regeneration. It is evident the tendency of the elm dieback, as well as moderate ill-health hardwoods, mainly ash and relatively peaceful state of vitality of conifers.

Keywords: National Nature Reserve, health status, defoliation, macromycetes

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