Fig. 5.4 a Anthracomass is defined as the quantity of charcoal per kilogram of dried soil and was
calculated on the basis of the mass of charcoals larger than 0.8 mm (expressed in milligrams) and
the total mass of the fraction of dry soil less than 5 mm (expressed in kilograms). The soil charcoal
analysis showed that anthracomass was present at all sampling points. b Pedoanthracological
diagrams (modified from Cunill et al. 2013). Taxon-specific anthracomass (TSA) by level in an
elevational transect, expressed in mg/kg. c Theoretical profile of the upper forest boundary, based
on the anthracomass at the time of maximum Holocene forestation, compared to the present
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calculated on the basis of the mass of charcoals larger than 0.8 mm (expressed in milligrams) and
the total mass of the fraction of dry soil less than 5 mm (expressed in kilograms). The soil charcoal
analysis showed that anthracomass was present at all sampling points. b Pedoanthracological
diagrams (modified from Cunill et al. 2013). Taxon-specific anthracomass (TSA) by level in an
elevational transect, expressed in mg/kg. c Theoretical profile of the upper forest boundary, based
on the anthracomass at the time of maximum Holocene forestation, compared to the present
5 The Role of Environmental Geohistory …
121