Summary
The amounts of C and N that pass through the nematode biomass in four cropping systems, barley without and with N fertilization, grass ley and lucerne, has been estimated. The nematodes were sampled at the field site of a Swedish integrated research project “Ecology of Arable Land: The Role of Organisms in Nitrogen Cycling”. The nematode biomass was lower (200 mg dry weight m−2) in the annual (barley) than in the perennial (grass and lucerne, 350 mg dry weight m−2) crops. For respiration, the nematodes used 4–71 O2m−2 year−1 corresponding to C liberation of 1.3%–2.0% of the carbon input to the soil. A higher relative contribution by bacterial-feeding nematodes to the C and N fluxes and a higher turnover rate of the nematode biomass is an indication of more rapid nutrient circulation in the annual than in the perennial cropping systems.
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Sohlenius, B., Boström, S. & Sandor, A. Carbon and nitrogen budgets of nematodes in arable soil. Biol Fert Soils 6, 1–8 (1988). https://doi.org/10.1007/BF00257912
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DOI: https://doi.org/10.1007/BF00257912