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1

Production rate and economic efficiency of mid-class harvesters in thinnings of mountainous terrains of Central Slovakia

100%
Tajbos J., Messingerova V.
Electronic Journal of Polish Agricultural Universities. Series: Forestry
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2014
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tom 17
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nr 2
2

Restitution Tatra chamois [Rupicapra rupicapra tatrica Blahout 1971] to the Nizke Tatry Mts [Central Slovakia]

67%
Backor P., Velic E.
Nature Conservation
|
2008
|
tom 65
17-25
3
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Syntaxonomy and ecology of forest vegetation in the Stiavnicke vrchy Mts (Central Slovakia)

67%
Slezak M., Hegedusova K., Senko D.
Acta Societatis Botanicorum Poloniae
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2011
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tom 80
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nr 2
Vegetation of deciduous forests in the Štiavnické vrchy Mts (Central Slovakia) was studied using the standard Zürich-Montpellier approach. The numerical classification and ordination technique were applied to determine the main forest vegetation types and to find the responsible environmental drivers related to their distribution patterns, respectively. The data set including 198 relevés collected by authors in 1997-2009 and 185 relevés excerpted from literature was used to analysis. Numerical classification resulted in delimitation of fourteen vegetation types representing eleven associations with two variants and two communities within the Quercetea roboripetraeae and Querco-Fagetea classes. The major environmental gradients in variation of forest species composition were associated with moisture and nutrient content following the average Ellenberg indicator values. Along the moisture gradient, vegetation types were ordered from subxerophilous oak forests turn mesophilous mixed oak-hornbeam, beech and ravine forests to hygrophilous riparian alder forest. The results confirmed important role of soil nutrients and moisture by determination of forest vegetation in subcontinental part of Central Europe. Special attention was given to the discussion of floristical characteristics, site conditions and syntaxonomy.
4

Development of genetic structures in a Norway spruce [Picea abies Karst.] population colonizing the abandoned agricultural land: a look back and a look ahead

67%
Gomory D., Fabrika M., Chudy F., Paule L.
Polish Journal of Ecology
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2006
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tom 54
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nr 1
Changes in the genetic variation and spatial genetic structures were modelled in a Norway spruce (Picea abies Karst.) population colonizing abandoned pasture area of 100 hectares at the locality Príslopy, Poľana Mts. (Carpathians, Central Slovakia, 48º38’ N, 19º25’E, approx. 900 m a.s.l.). The development in the past was reconstructed on the basis of a series of historical aerial photographs, reflecting primarily the population growth and the colonization process. The future development was predicted using the individual-tree model SIBYLA developed by Fabrika (2003), whereby it reflects the future density-dependent mortality. No significant changes of the allelic richness or gene diversity were observed during the whole period of modelling (1956 to 2065). Fixation index (reflecting the degree of inbreeding) has steadily increased since the initial stage up to the present, and is predicted to increase further, indicating the accumulation of inbred individuals due to the formation of spatially continuous kin groups. This assumption is supported by the development of spatial genetic structures (non-random distribution of genotypes). The distograms of the number of alleles in common (NAC) showed that spatially proximate individuals share significantly more alleles than expected under random distribution of genotypes. Spatial genetic structures were formed at the very early stage of colonization, have persisted until the present and are predicted to be even enhanced in the future. Isolation by distance due to a limited seed dispersal, strong fertility variation and facilitation of seedling establishment in the vicinity of early colonizers are proposed as explanation. The results indicate that Norway spruce, although being the component of many climax forest communities, is capable under certain circumstances to behave as a very efficient pioneer. The species disperses enough seeds on medium distances to reach suitable sites within open areas and establish as seedlings, whereas a strong seed dispersal at short distances and modification of environment near the early colonizers allow the extension of kin groups and gradual occupation of the whole available space.
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