Fig. 3

Biotic variables categorized by sedimentary facies (left column), dune position (central column), and dune sector (right column). TR: Taxonomic richness, N: Abundance, H’: Shannon index, J’: Pielou’s evenness index. Sedimentary facies: sG (sandy gravel), gS (gravelly sand), (g)S (slightly gravelly sand), and S (sand). Dune positions: ND (nondune area), Trgh (trough), Sts (stoss side), Lee (lee side). Dune sectors: W (west), S (south), C (center), and E (east). The letters above the boxplots represent statistically comparable groups (Tukey HSD, p < 0.05).