Table 2 Results of the envfit analysis. PC1 and PC2 show the relationships of the environmental variables with the first and second PCA axes (based Aitchison distance). R² is the variation explained by the multiple regression model. Pr(> r) indicates the significance of the multiple regression. Significance codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05. (A) bacterial community water samples and (B) bacterial community sediment samples (C) eukaryotic community water samples and (D) eukaryotic community sediment samples
From: Low impact of Zostera marina meadows on sediment and water microbiota under brackish conditions
|  | PC1 | PC2 | r2 | Pr(> r) |
|---|---|---|---|---|
(A) | ||||
Temperature | -0.54 | -0.84 | 0.07 | 0.016* |
Salinity | -0.99 | 0.05 | 0.69 | 0.001*** |
PON | 0.94 | 0.35 | 0.18 | 0.001*** |
Chl- a | 0.99 | 0.17 | 0.17 | 0.001*** |
POC | 0.83 | 0.56 | 0.26 | 0.001*** |
(B) | ||||
Temperature | 0.98 | -0.19 | 0.24 | 0.001*** |
Salinity | -0.99 | 0.01 | 0.67 | 0.001*** |
PON | -0.52 | -0.86 | 0.09 | 0.005** |
Chl- a | -0.51 | -0.86 | 0.10 | 0.001*** |
POC | -0.47 | -0.88 | 0.08 | 0.005** |
(C) | ||||
Temperature | -0.36 | -0.93 | 0.15 | 0.001*** |
Salinity | -0.99 | -0.10 | 0.54 | 0.001*** |
PON | 0.64 | -0.76 | 0.46 | 0.001*** |
Chl-a | 0.64 | -0.77 | 0.46 | 0.001*** |
POC | 0.65 | -0.75 | 0.45 | 0.001*** |
(D) | ||||
Temperature | -0.83 | 0.56 | 0.26 | 0.001*** |
Salinity | -0.95 | 0.30 | 0.73 | 0.001*** |
PON | 0.20 | -0.98 | 0.06 | 0.041* |
Chl- a | -0.19 | -0.98 | 0.06 | 0.058 |
POC | -0.17 | -0.98 | 0.06 | 0.049** |