OPERA CORCONTICA 38: 123-148,2001 VEGETATION DYNAMICS IN DWARF PINE ECOSYSTEMS IN THE EASTERN GIANTMTS. Dynamika vegetace kosodi'eviny v ekosystemech vychodnich Krkono~ich

• Main Authors: Jitka Malkova, Karel Matejka, Martina Krtickovaj
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Carex bigelowii; Tundra
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.464.8389; http://infodatasys.cz/public/oc38-8.pdf

The relationship between Pin ItS mugo and several species (Carex bigelowii, Hieracillm alpinunI agg., Pulsatilla sc/lerfelii and CallwIQ vulgaris) was studied in the alpine tundra localities reforested by dwarf pine in eastern part of the Giant MIs. The young dwarf pine plantations grow relatively fas t and become vital under favourable condition s. Annual increase in shrub width varies in range 12 to 35 % in stands of age to 35 years. Dwarf pine slands arc relatively open, the size of the vacant gaps is sufficient for an original plant mkrocoenosc development. Changes in the plant coenoses were described by the repeated rei eves use. They documented a decrease of cover or a disappearing set of species. in cluding protected ones (e.g. Primula minima, Huperzia selago, HypocJweris uniflora, Gelltjalla asclepiadea, Arnica montana. Dipliasjasfrum alpillum) mainly in the closed Pill us mugo stands. Carex bigefowii is species with low coverage under dwarf pine and in the nearest belt around the shrubs. Number of plants increased with the distance from the nearest pine shrub. A light ecotonal effect by Hieraciu11I alpinulrI agg. is shown by the dwarf pine periphery. It can be marked within a close belt- the species indicate an accumulation of individuals