4661: Modelling of earthworm population dynamics in agricultural soils (First draft)
(2005) Modelling of earthworm population dynamics in agricultural soils (First draft). [preprint]
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Summary
Earthworms are known to play a role in the nitrogen mineralisation in agricultural soils. Here we present simulations of the population dynamics of two earthworm species that are dominating in danish arable land, and compare the simualtions with observed densities (number and biomass) of the two species from three fields in Denmark. The simulations show an acceptable fit to the observations. The simulation model is used to quantify the impact of the observed earthworm populations on the minearalisation of nitrogen and in turn the crop production. The simulations show an increase in yield due to the earthworm contribution to mineralisation, and that the earthworms can be responsible for about 1/3 of the biologically mineralised nitrogen.
| Document Language: | English |
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| Subject Areas: | Crop husbandry > Production systems > Cereals, pulses and oilseeds Crop husbandry > Production systems Soil > Soil quality > Soil biology Environmental aspects > Biodiversity and ecosystem services |
| Research affiliation: | Denmark > DARCOF II (2000-2005) > I. 3 (BIOMOD) Interaction between nitrogen dynamics, crop production and biodiversity |
| Funding Part: | 75-100% |
| Orgprints ID Number: | 4661 |
| Contact: | Axelsen, Senior Scientist Jørgen |
| Deposited On: | 06 April 2005 |
| EPrint Type: | Preprint |
| Peer Review Status: | Submitted for peer-review but not yet accepted |
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