Table 2. Results from Spearman correlation analysis between N2-fixation measured at the highest peak of the day and sampling date, moss species, nifH expression and abundance for each individual cluster, light intensity and temperature.
| Factors | N2-fixation (μg N g−1 fresh weight moss d−1) |
|---|---|
| Sampling date | 0.871 (0.000) |
| Moss species | −0.375 (0.071) |
| nifH abundance of ‘Stigonema cluster' | 0.667 (0.000) |
| nifH abundance of ‘Nostoc cluster I' | 0.282 (0.182) |
| nifH abundance of ‘nifH2 cluster' | 0.449 (0.028) |
| nifH expression of ‘Stigonema cluster' | 0.514 (0.010) |
| nifH expression of ‘Nostoc cluster I' | 0.472 (0.020) |
| nifH expression of ‘nifH2 cluster' | 0.284 (0.178) |
| Light intensity | 0.826 (0.000) |
| Temperature | −0.176 (0.411) |
Values show the correlation coefficient and the P-value in parentheses; bold values show statistically significant correlations at P<0.05.