Table 2.
Spearman correlation (p < 0.05) of different carbohydrates and environmental factors to extracellular enzyme activity of β-glucosidase (β-Glcase), leucine amino peptidase (LAPase), and phosphatase (phos).
| β-Glcase | LAPase | phos | |
|---|---|---|---|
| Carbohydrates | |||
| Ara | ø | ø | - |
| Fuc | +++ | +++ | ++ |
| Gal | ++ | +++ | ++ |
| Glc | ++ | ++ | ++ |
| Man/Xyl | ø | + | + |
| Rha | ++ | ++ | ++ |
| GalAM | + | + | ++ |
| GlcAM | ++ | ++ | ++ |
| GlcA | ø | ø | ø |
| MurA | ø | ø | ø |
| GalURA | ø | ø | ø |
| GlcURA | + | + | + |
| Environmental parameters | |||
| pH | ++ | ++ | ++ |
| SECCI | - | ø | ø |
| Temp | ++ | ++ | ++ |
| Sal | - | - | -- |
| SiO2 | -- | -- | -- |
| PO4 | - | - | - |
| NO2 | -- | -- | -- |
| Diatoms | + | ++ | ø |
| Chl a | ++ | ++ | + |
| DOC | ø | ø | ++ |
| POC | +++ | +++ | ++ |
Ø = no significant correlation; + = modest positive correlation (rs > 0.4), ++ = strong positive correlation (rs > 0.7), +++ = very strong positive correlation (rs > 0.9), - = modest negative correlation (rs < -0.4), -- = strong negative correlation (rs < -0.7).