Avalanches keep habitats open and species-rich in the montane and subalpine belt

摘要: From a conservation point of view, avalanches are natural ecological process. However, they can also endanger people and cause serious damage to buildings infrastructure. an anthropocentric protective measures in the form avalanche barriers necessary. Avalanche starting zone prevent events. Hence there is conflict between nature protection against hazards. This study aimed primarily at assessing value active tracks. To this end we examined 16 plant stands on three different tracks Gesause National Park (Styria, Austria) recorded butterfly species same time. On investigated tracks, soils very shallow, stony, periodically dry, nutrient-poor, base-rich rendzinas developed over limestone debris. The sites scree-covered, steep mainly east-facing slopes located montane belt. belong Origano-Calamagrostietum variae community. biodiversity concludes that under these conditions vegetation characterized by high richness vascular species. average, plot size 20 m² contains 71 5 bryophyte species-rich stands, colourful when bloom, dominated herbs, resulting aesthetic increased diversity butterflies. have because processes continue happen, leading near-natural disclimax communities.