Table 5. PERMANOVA tests for both total and potentially-toxic Microcystis accumulation in cultures (cell equivalents mL-1 g-1 2 weeks-1) between sites (1.1–15.1), event (November 2014, April 2015, November 2015, and April 2016), and period (t0 to t2, t2 to t4, and t4 to t6).
Tests were based on the non-Euclidean Bray-Curtis dissimilarity measure and were done using 999 permutations under the reduced model. Bold values indicate significant differences at p <0.05.
Microcystis spp. | Source | df | SS | R2 | Psuedo-F | Pr (>F) |
---|---|---|---|---|---|---|
Total | Event | 2 | 27906 | 0.85913 | 46.9555 | 0.182 |
Site | 15 | 31317 | 0.96415 | 7.0261 | 0.385 | |
Period | 2 | -63589 | -1.95767 | -106.9962 | 0.815 | |
Residual | 124 | 36847 | 1.13439 | - | - | |
Total | 143 | 32482 | 1 | - | - | |
Potentially-toxic | Event | 2 | -70740 | -1.56556 | -154.026 | 0.964 |
Site | 15 | 45060 | 0.99724 | 13.082 | 0.057 | |
Period | 2 | 42389 | 0.93813 | 92.297 | 0.044 | |
Residual | 124 | 28475 | 0.63019 | - | - | |
Total | 143 | 45185 | 1 | - | - |