The distributional patterns of planet species were analyzed within periglacial microforms belonging to the collective groups of patterned grounds and sorted stripes in the Ortles-Cevedale group (Lombardy, Italy). The edges of primitive polygons are practically free of vegetation, whilst the central areas are colonized by pioneer plants of detritic slopes. This is clearly correlated with a low degree of sediment sorting. The centre of the most evolved polygons is covered by a carpet of Salix herbacea. Age determinations of Salix shoots are not useful for dating purposes, but provide information about the local microclimate. -from Authors
Correlation between vegetation pattern and micromorphology in periglacial areas of the central Alps
GERDOL, Renato;
1990
Abstract
The distributional patterns of planet species were analyzed within periglacial microforms belonging to the collective groups of patterned grounds and sorted stripes in the Ortles-Cevedale group (Lombardy, Italy). The edges of primitive polygons are practically free of vegetation, whilst the central areas are colonized by pioneer plants of detritic slopes. This is clearly correlated with a low degree of sediment sorting. The centre of the most evolved polygons is covered by a carpet of Salix herbacea. Age determinations of Salix shoots are not useful for dating purposes, but provide information about the local microclimate. -from AuthorsI documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
