Table 1 PERMANOVA results for dinoflagellate assemblage alpha diversity (observed richness, Shannon Diversity, and Dominance and Rarity Indices) and assemblage structure throughout the water column to a depth of 200 m beneath the sea surface at depth zones (D1: 5–10 m, D2: 20–30 m, D3: 45–60 m, D4: 95–120 m, D5: 130–150 m) at Station A, B, and C. Alpha diversity data were raw counts. Assemblage composition data were normalized to median sequencing depth and Hellinger-transformed before analysis. Significant effects at p < 0.05 are highlighted in bold
Diversity metric | Factor | Df | Sum of squares | R2 | F | p |
|---|---|---|---|---|---|---|
Assemblage structure | Depth Station Residual Total | 4 2 8 14 | 1.548 0.693 1.790 4.030 | 0.384 0.172 0.443 1 | 1.73 1.55 | 0.003 0.037 |
Dominance index | Depth Station Residual Total | 4 2 8 14 | 0.134 0.004 0.026 0.163 | 0.819 0.023 0.156 1 | 10.46 0.597 | 0.004 0.576 |
Rarity index | Depth Station Residual Total | 4 2 8 14 | 0.160 0.020 0.054 0.234 | 0.683 0.086 0.229 1 | 5.96 1.51 | 0.020 0.313 |
Observed richness | Depth Station Residual Total | 4 2 8 14 | 53,341 154,683 502,666 710,689 | 0.075 0.217 0.707 1 | 0.21 1.23 | 0.927 0.376 |
Shannon diversity | Depth Station Residual Total | 4 2 8 14 | 1.069 0.701 2.058 3.829 | 0.279 0.183 0.537 1 | 1.04 1.36 | 0.397 0.302 |