Table 2.
PERMANOVA results comparing fluxes of CO2 as a function of different factors (site, nutrient enrichment treatment, light/dark conditions, and season).
| Term | df | Pseudo-F | p(Perm) | Post hoc tests | ||
|---|---|---|---|---|---|---|
| Site × nutrient | 8 | 0.96203 | 0.4772 | |||
| Site × light | 4 | 8.3302 | 0.0001 | |||
| Site × Season | 4 | 1.0338 | 0.3937 | |||
| nutrient × light | 2 | 6.6977 | 0.0014 | Light | Control | |
| C < M = H | L < D | |||||
| Dark | Medium | |||||
| L < D | ||||||
| High | ||||||
| L < D | ||||||
| nutrient × Season | 2 | 0.67088 | 0.5144 | |||
| light × Season | 1 | 9.4367 | 0.002 | |||
| Site × nutrient × light | 8 | 1.9591 | 0.0569 | |||
| Site × nutrient × Season | 2 | 0.052131 | 0.9486 | |||
| nutrient × light × Season | 2 | 1.2485 | 0.2904 | |||
| Site × light × Season | 4 | 4.9939 | 0.0015 | Light, Summer | Onerahi, Summer | Raglan, Light |
| (RAG = TAK) < ONE < WHT, | L < D | S < W | ||||
| RAG < PB < WHT | Parua Bay, Summer | Raglan, Dark | ||||
| Dark, summer | L < D | W < S | ||||
| TAK < (RAG = WHT) | Parua Bay, Winter | Whangateau, Light | ||||
| D = L | W < S | |||||
| Takahiwai, Summer | Whangateau, Dark | |||||
| L < D | W < S | |||||
| Raglan, Summer | ||||||
| L < D | ||||||
| Raglan, Winter | ||||||
| L < D | ||||||
| Whangateau, Summer | ||||||
| L < D | ||||||
| Whangateau, Winter | ||||||
| L < D | ||||||
Significant effects (α = 0.05) are given in bold, and post-hoc pairwise tests are given for significant interactions. Significant interactions are prioritised over main effects, and three-way interactions over two-way interactions. C – Control nutrient treatment, M – Medium nutrient treatment, H – High nutrient treatment, RAG – Raglan site, TAK – Takahiwai site, ONE – Onerahi site, PB – Parua Bay site, WHT – Whangateau site, L – Light conditions, D – Dark conditions, S – Summer, W – Winter.