A preliminary investigation of the lichen biota associated with recently deglaciated terrain in southeastern Alaska

Glaciers worldwide are currently retreating at unprecedented rates, revealing large tracts of newly exposed rock and till. We present the results a preliminary, qualitative investigation lichen diversity transient habitats near three glaciers in southeastern Alaska: Muir Glacier within Bay National Park, Baird Patterson Tongass Forest. This work is noteworthy as it (i) documents previously undescribed species communities rapidly changing glacier habitats, (ii) illustrates importance cryptogams (lichens, bryophytes, algae, cyanobacteria) primary colonization recently deglaciated terrain, (iii) sets apart biota terrain Alaska from that other glacial regions (e.g., European Alps, Svalbard, southern South America) even parts Brooks Range), (iv) emphasizes more studies focus on this habitat. The biotas found different successional stages these described compared. role lichens post-glacial vegetation initiation, threats to biota, suggestions for possible origins propagules colonize surfaces also discussed.