Davis indices and R values in the Tajik-Uzbek Surface Data Base

This dataset contains the different statistic scores used to infer the Davis indices and R-values of the 62 most important pollen types of the TUSDB. The Davis indices and R-values are semi-quantitative scores for pollen bias corrections. B0 is the number of sites in which taxon i is present as both pollen sample and vegetation species (plant), P0 the number of the sites with pollen presence only pollen, and P1 are the sites in which only the vegetation species are present. The results are the indices of association (A), underrepresentation (U) and overrepresentation (O). Davis (1984) also present threshold give game the pollen representativity classes (unassociated, weakly associated, associated, strongly-associated and over-represented taxa). The last column gives the R-values of each pollen type.