Table 2.
Per species results of general linear models (absolute abundances; above) and negative-binomial generalized linear models (proportional abundances; below) modelling the abundances of root-feeding, bacterivorous, fungivorous and predatory-omnivorous nematodes. Included factors are soil (S), plant origin (O), population (P) and the origin*soil and population*soil interactions
| Origin-model | Population-model | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Origin (O) | Soil (S) | O*S | Population (P) | Soil (S) | P*S | ||||||||
| Dev. | p | Dev. | p | Dev. | p | Dev. | p | Dev. | p | Dev. | p | ||
| Absolute abundance | |||||||||||||
| C. jacea | Root feeders | 1.03 | 0.31 | 0.01 | 0.94 | 5.13 | < 0.05 | 22.60 | < 0.001 | 0.03 | 0.87 | 10.98 | 0.052 |
| Fungivores | 3.50 | 0.06 | 1.45 | 0.23 | 8.97 | < 0.01 | 8.79 | 0.12 | 1.12 | 0.29 | 20.72 | < 0.001 | |
| Bacterivores | 0.22 | 0.64 | 4.64 | < 0.05 | 0.44 | 0.51 | 18.02 | < 0.01 | 5.04 | < 0.05 | 3.08 | 0.69 | |
| Predators/Omnivores | 2.49 | 0.11 | 12.88 | < 0.001 | 0.23 | 0.63 | 8.61 | 0.13 | 12.73 | < 0.001 | 2.31 | 0.80 | |
| C. stoebe | Root feeders | 0.36 | 0.55 | 9.78 | < 0.01 | 1.55 | 0.21 | 10.77 | 0.06 | 12.78 | < 0.001 | 10.56 | 0.06 |
| Fungivores | 0.70 | 0.40 | 14.39 | < 0.001 | 0.26 | 0.61 | 4.88 | 0.43 | 15.51 | < 0.001 | 18.57 | < 0.01 | |
| Bacterivores | 2.94 | 0.09 | 0.13 | 0. 72 | 0.93 | 0.34 | 15.02 | < 0.05 | 0.05 | 0.82 | 9.02 | 0.11 | |
| Predators/Omnivores | 1.21 | 0.27 | 27.75 | < 0.001 | 1.59 | 0.21 | 13.27 | < 0.05 | 32.53 | < 0.001 | 2.89 | 0.72 | |
| Origin (O) | Soil (S) | O*S | Population (P) | Soil (S) | P*S | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| F | p | F | p | F | p | F | p | F | p | F | p | ||
| Proportional abundance | |||||||||||||
| C. jacea | Root feeders | 0.03 | 0.87 | 1.45 | 0.23 | 2.16 | 0.15 | 2.35 | 0.05 | 1.62 | 0.21 | 1.11 | 0.37 |
| Fungivores | 3.14 | 0.08 | 5.37 | < 0.05 | 4.52 | < 0.05 | 1.03 | 0.41 | 5.30 | < 0.05 | 1.94 | 0.10 | |
| Bacterivores | 1.22 | 0.27 | 7.27 | < 0.01 | 5.97 | < 0.05 | 2.31 | 0.06 | 8.40 | < 0.01 | 2.69 | < 0.05 | |
| Predators/Omnivores | 4.07 | < 0.05 | 16.35 | < 0.001 | 2.09 | 0.15 | 1.58 | 0.18 | 15.79 | < 0.001 | 0.83 | 0.54 | |
| C. stoebe | Root feeders | 0.05 | 0.83 | 9.44 | < 0.01 | 0.45 | 0.51 | 0.37 | 0.87 | 9.45 | < 0.01 | 1.32 | 0.27 |
| Fungivores | 0.56 | 0.46 | 5.73 | < 0.05 | 0.08 | 0.78 | 0.30 | 0.91 | 5.27 | < 0.05 | 0.46 | 0.80 | |
| Bacterivores | 0.90 | 0.35 | 18.64 | < 0.001 | 0.62 | 0.44 | 0.43 | 0.83 | 17.51 | < 0.001 | 0.72 | 0.61 | |
| Predators/Omnivores | 3.39 | 0.07 | 8.87 | < 0.01 | 0.75 | 0.39 | 2.31 | 0.06 | 10.22 | < 0.01 | 1.38 | 0.25 | |
F values (general linear models) or explained deviance (Dev.; negative binomial models) and p values are shown. Significant results (p < 0.05) are marked in bold, marginally significant results (0.05 > p < 0.07) in italic