In regards to the writer
Lichen dimensions on many areas of understood age that is historical through the hills, first, advised that development prices were consistent for the area and, 2nd, offered control points for an in depth development bend through the past a few hundreds of years. a tried expansion with this development bend through the final thousands of years turned out to be tentative, for this had been based just on three 14C times of soils hidden beneath moraines.
The original part of the extensive bend represents both Rhizocarpon geographicum and Rhizocarpon alpicola, that have comparable development prices while contemporaneous people happen together; but, Rhizocarpon geographicum is reasonably short-lived of this type and therefore the older percentage of the curve pertains only to Rhizocarpon alpicola.
The extensive bend, which will show initial fast escalation in thallus diameter accompanied by a long period of slower growth that averaged about 3. More over, it shows that the biggest living Rhizocarpon alpicola thallus in the area, which can be mm in diameter, can be up to 9, yrs old.