Table 3. Number (individuals m−2) and biomass (g m−2) of earthworms of the Jena Experiment.
| Earthworms | March | September |
| Number of anecics | 3.14±0.53 | 5.47±0.63 |
| Biomass of anecics | 4.98±1.03 | 12.74±1.37 |
| Number of endogeics | 21.51±2.25 | 34.05±3.67 |
| Biomass of endogeics | 8.13±1.01 | 12.62±1.51 |
| Number total earthworms | 26.88±2.92 | 40.55±4.02 |
| Biomass total earthworms | 13.86±2.03 | 25.78±2.35 |
Total number and biomass of earthworms included also unidentifiable earthworms and the invasive earthworm Lumbricus castaneus.
Shown are the means (±1 SE) across plots in 2011 for the extraction dates in spring (March) and autumn (September).