Communities were identified based on the results of the gradient and indicator
species analysis and related to the nomenclature proposed by the
Royal Forest Department (1962). Alpha (a, average species
richness per plot), beta (b, total richness/average richness) and
gamma (g, total species) richness, and Hill’s diversity numbers N0
(=g), N1ð¼ eH0
Þ, N2 (=D1) and E1ð¼ eJ0
¼ N1=N0Þ were calculated for
each community as well as a first-order jackknife estimate for total
species richness.