Table 1 Estimates of earthworm biomass per habitat, in comparison to previous studies 21,29,53. Standard errors were not calculable in retrospect for all species combined in Kruuk (1978) and were not given in Hofer (1988).
| Â | Lumbricus | All | Â | Â | Â | |||
|---|---|---|---|---|---|---|---|---|
| Â | terrestris only | species | Â | Â | Â | |||
| Â | Sample | Â | Â | Â | Â | Â | Sampling | Â |
| Â | size | kg/ha | s.e. | kg/ha | s.e. | Method | Date | Reference |
Old Woodland | 41 | 807.8 | 81.9 | 1117.7 | - | Formalin | 1973–5 | Kruuk 1978 |
Old Woodland | 10 | - | - | 84.3 | 17.8 | Sorting | 1999 | This Study |
Beechwood | - | 123.0 | - | - | - | Formalin | - | Cuendet 1984* |
Coniferous plantations | 8 | 175.0 | - | - | - | Formalin | 1982–3 | Hofer 1988 |
Plantation | 13 | 177.7 | 61.2 | 283.8 | - | 1973–5 | Kruuk 1978 |  |
Plantation | 78 | - | - | 57.6 | 6.2 | Sorting | 1999 | This Study |
Mixed plantations | 8 | 278.0 | - | - | - | Formalin | 1982–3 | Hofer 1988 |
Deciduous woodland | 8 | 837.0 | - | - | - | Formalin | 1982–3 | Hofer 1988 |
Secondary | 76 | - | Â | 73.1 | 5.4 | Sorting | 1999 | This Study |
Pasture | 29 | 970.6 | 81.9 | 1242.2 | - | Formalin | 1973–5 | Kruuk 1978 |
Pasture | 29 | - | - | 52.0 | 6.4 | Sorting | 1999 | This Study |
Pasture | 6 | - | - | - | - | Formalin | 1982–3 | Hofer 1988 |
Grassland | 8 | 230.0 | - | - | - | Formalin | 1982–3 | Hofer 1988 |
Arable | 11 | 482.4 | 124.6 | 707.3 | - | Formalin | 1973–5 | Kruuk 1978 |
Arable | 23 | - | - | 36.0 | 6.7 | Sorting | 1999 | This Study |
Intermediate habitat | 9 | - | - | 52.8 | 13.1 | Sorting | 1999 | This Study |