Fig. 2: Continental Holocene pollen diversity trends.
From: Floristic diversity and its relationships with human land use varied regionally during the Holocene
GAMs fit to continental Holocene pollen turnover (Bray–Curtis), richness and evenness data. Heterogeneity panels (final column) are not fitted GAMs but distributions of the resampled data (given the reduced heterogeneity sample size arising from the 500 year binning; Methods). The 1,000 resamples (modelled first by GAMs, except in the final column) are then summarized by the median (thick lines) and interquartile ranges (shaded intervals). Rows are ordered by the number of pollen samples present in each continent. Europe n = 39,804 (a–d), North America n = 16,897 (e–h), Asia n = 2,882 (i–l), South America n = 2,524 (m–p), Africa n = 1,648 (q–t) and Australasia n = 550 (u–x).
