In western North America, quaking aspen (Populus tremuloides) is the most common hardwood in montane landscapes. Fire suppression, grazing and wildlife management practices, and climate patterns of the past century are all potential threats to aspen coverage in this region. If aspen-dependent species are losing habitat, this raises concerns about their long-term viability. Though lichens have a...

The shortage and low diversity of coarse dead wood in managed forests are major threats to wood living organisms. Increasing harvest of slash and stumps for biofuel may further decrease the amounts of dead wood. The aim of this thesis was to predict the impact of forest fuel harvest on lichen diversity in a managed forest landscape. First, lichen diversity was compared between the stem and slas...

The study deals with lichen diversity on monuments of Bhimbetka rock shelters at Raisen district Madhya Pradesh. micro-climatic conditions the provide excellent habitat for lichens to colonize. A total 40 species belonging 10 communities exhibit their occurrence shelters. crustose and squamulose 21 dominance followed by eight Physioid seven Teloschistacean communities. ecology colonizing togeth...

Sixteen epilithic lichen samples (13 species), collected from seven locations in Northern and Southern Victoria Land in Antarctica, were investigated for the presence of black fungi. Thirteen fungal strains isolated were studied by both morphological and molecular methods. Nuclear ribosomal 18S gene sequences were used together with the most similar published and unpublished sequences of fungi ...

At least 10% of the world's tree species are threatened with extinction and pathogens are increasingly implicated in tree threats. Coextinction and threats to affiliates as a consequence of the loss or decline of their host trees is a poorly understood phenomenon. Ash dieback is an emerging infectious disease causing severe dieback of common ash Fraxinus excelsior throughout Europe. We utilized...

Compared to the mainland, boreal oceanic islands would be expected to have a depauperate lichen biota because of their isolation, small area, exposure to salt spray and structurally simple habitats. We surveyed the macrolichens (non-crustose lichens) and quantified habitat associations on Kent Island, an 80-hectare island that lies at the mouth of the Bay of Fundy, New Brunswick, Canada. A tota...

I examined the relationships among snow cover (api), l ichen abundance, and canopy composition on the range o f the Aikens Lake population o f woodland caribou (Rangifer tarandus caribou) i n southeastern Mani toba. Percent cover o f forage lichens (Cladina spp.) was positively correlated w i t h max imum total thickness and w i t h max imum vertical hardness o f api. M i x e d communities o f ...