Die Vegetation auf trockenen Block- und Felsstandorten im oberen Bergsturzgebiet von Goldau

Abstract

The vegetation on block debris and flat rock surfaces in the upper parts of the Goldau landslide area (Central Switzerland) was investigated. Block stands in the top part of the landslide are rather dry and sunny early-successional habitats on bare conglomerate which are covered by fragments of the Seslerio-Caricetum sempervirentis, Potentillion caulescentis and Stipetum calamagrostis. Semi-shaded less dry sites in the middle part with shallow and partly acidic layers of organic humus support more mature vegetation types which are related to the moss communities Dicrano-Hypnetum, Tortello-Ctenidietum mollusci and fragments of the Erico-Pinion and Molinio-Pinion. In the long term, further succession will eventually lead to vegetation types which are currently present in the lower parts of the landslide area.