The resilience of closed-crown coniferous stands within the boreal forest of North America is highly dependent on successful re-establishment of tree species following fire. A shift from closed-crown forest to open lichen woodland is possible following poor natural regeneration during the initial establishment phase, followed by the development of extensive lichen cover, which may hinder ongoing recruitment. We examined the development of the crustose lichen Trapeliopsis granulosa (Hoffm.) 18 to … Read more... 

This investigation is the first to quantify the degree of habitat specialization for any species within the little-known order Embiidina. The lichen and plant communities found in the habitats of two sympatric species, one living on lichens encrusted on granite and another feeding in leaf litter, wet e characterized using a process of ordination and cluster analysis. Differences among 40 samples and their relationships to environmental factors were probed statistically using Spearman's coefficient … Read more... 

Fire suppression since the 19th century has modified the functioning of boreal forest ecosystems in northern Sweden. In the long run, it induces changes in understory vegetation that result, especially on mesic sites, in feather mosses and Ericaceous dwarf shrubs outcompeting ground lichens, thus decreasing winter pastures for reindeer husbandry. In 2008, a field experiment was established in which, two years after a large forest fire, reindeer lichen (Cladonia spp.) was transplanted across various … Read more... 

(Post-fire recovery of the epiphytic-lichen community in Cordoba province, Argentina). Lichens are recognized bioindicators of environmental quality. Studies of lichen communities in relation to forest fires have shown the response to fire over micro-environmental variables that shape the community in the absence of this disturbance. The aim of this contribution is to recognize the effect of fire on the lichen community of Sierra Chaco in Cordoba province. Two areas were selected, one without past … Read more... 

[in Russian with English summary:] Overgrazing caused by reindeer husbandry has been a serious problem for the regions of the boreal and tundra zones for many years [3]. Terricolous fruticose lichens are the most sensitive component of Northern ecosystems [2, 8–10]. Currently, valuable forage lichens in the tundra zone of the Yamal Peninsula maintaining high occurrence, have a low abundance. The greatest impact of reindeer grazing and trampling is typical for summer pastures and driving paths. … Read more...