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In the Hrubý Jeseník Mts of the Czech Republic, research was carried out from 2001–2005 aimed at completing an up-to-date census of alpine juniper [Juniperus communis subsp. alpine (Smith) Čelakovský] and an evaluation of the overall health status of the populations, and at investigating the impacts of the main environmental factors on the viability of this species. 13 sites were identified with 283 individuals in total, but the sites differed dramatically in the number of recorded individuals. Comparisons with historical literature sources show that the species has been in decline. The main reasons for this decline include: a lack of suitable sites for colonization connected with a lack of adequate disturbance factors, competition from shading trees, and the presumed high age of the juniper populations combined with zero generative reproduction. More than two thirds of the individuals showed slight damage to their assimilation system. A health status of bad or very bad was determined for 5 % of the alpine juniper individuals. These trees in the Hrubý Jeseník Mts are also exposed to pressure from some herbivore insects and mammals. The populations are not yet in a literally critical state, but considering the range of impacts affecting them, it will be necessary to pay significant attention to their conservation strategies. Some recommendations for future management are suggested.

Ecological conditions and the distribution of alpine juniper (Juniperus communis subsp. alpina) in the Hrubý Jeseník Mts