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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).

From: Long-term resource variation and group size: A large-sample field test of the Resource Dispersion Hypothesis

  Lumbricus All    
  terrestris only species    
  Sample       Sampling  
  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 -   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
  1. * Cited in Hofer (1988).