Table 1.
Model statistics and estimated parameter values for three GLMs for log (FBM), log(DBM) and DMC developed for 291 grass individuals
| Dependent variable | R2 | F-values and significance levels | Model parameters: constant and slopes for the independent covariates (95 % confidence intervals) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Constant | Log(AREA) | COLOUR | COLOUR × Log(AREA) | Constant | Log (AREA) | COLOUR | COLOUR × Log(AREA) | ||
| Log(FBMD) | 0·96*** | 895*** | 6873*** | NS | NS | −1·61 (−1·50 to −1·71) | 1·21 (1·19 to 1·24) | NS | NS |
| Log(DBMD) | 0·96*** | 1426*** | 6106*** | 27*** | NS | −2·69 (−2·55 to −2·83) | 1·40 (1·37 to 1·44) | −0·10 (−0·06 to −0·14) | NS |
| DMCD | 0·92*** | NS | 1270*** | 204*** | 87*** | NS | 18·44 (17·42 to 19·46) | −7·59 (−6·54 to −8·63) | −1·36 (−1·07 to −1·65) |
***P < 0·001.
NS, not significant (and parameter thus not included in the model); AREA, projection area of the plant (in mm2); FBM, fresh biomass (in mg); DBM, dry biomass (in mg); DMC, dry matter content (in %).
The subscript ‘D’ denotes parameters that were measured using traditional, destructive methods.