Key words: semiarid grassland, seed bank, seed density, persistent and transient seed bank, drought, weather extremes

Key words: aboveground biomass, thinning, European chestnut

Key words: Festucetalia valesiacae, Detrended Correspondence Analysis, Canonical Correspondence Analysis, Xericity, Frequency data, Coenocline, western Slovakia

Key words: chiroptera, habitats, forest stands, activity

Key words: biomass production, epigeic sporocarps, saprophytic fungi, spruce monocultures

Key words: forest ecosystems, regular oak forests, geographical information system (GIS), cluster analysis, global position system (GPS), planning in forestry

Key words: Nature Reserves, Vascular Plant Species of the Nature Reserves, phytochorological diversity, alpha-diversity

Key words: ecological integrity, landscape, typology, category

Key words: air pollution, proton load, beech, forest ecossystem