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Ecological properties of earthworm burrows in an organically managed grass-clover system

Krogh, P.H.; Lamandé, M.; Eriksen, Jørgen and Holmstrup, Martin (2001) Ecological properties of earthworm burrows in an organically managed grass-clover system. Speech at: Science for the environment - environment for society, Aarhus, 5-6 Oct. 2011.

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Summary

Earthworms have long been recognized for their soil engineering capacities. Since the creation of the ecosystem service concept the utilitarian perception of nature has gained a lot of attention and funding for research. Hence, we selected earthworms and their burrowing activities to enable an assessment of their influence on water movement and nutrient release. The study went on in autumn where earthworm population densities and their burrowing activities were quantified in plots of third year clover-grass crops differing in fertilisation and the manner of removing the biomass either by grazing or cutting. We found very high biomasses as expected for clover-grass about 200 g wet earthworm weight m-2. The common earthworm association typical to our region was: Aporrectodea tuberculata, Aporrectodea rosea, Aporrectodea longa and Lumbricus terrestris, i.e. two endogeic and two anecic species. We present our results on the burrow size distribution down the soil profile and link it to the species and species traits. The results are further put into perspective in our present research on macropores related to soil ecosystem services and pesticide leaching


EPrint Type:Conference paper, poster, etc.
Type of presentation:Speech
Subjects: Soil > Soil quality > Soil biology
Environmental aspects > Biodiversity and ecosystem services
Farming Systems > Farm nutrient management
Research affiliation: Denmark > DARCOF III (2005-2010) > ORGGRASS - Grass-clover in organic dairy farming
Denmark > AU - Aarhus University > AU, DJF - Faculty of Agricultural Sciences
Denmark > AU - Aarhus University > AU, NERI - National Environmental Research Institute
Deposited By: Krogh, Senior scientist PH
ID Code:20690
Deposited On:16 Apr 2012 14:17
Last Modified:16 Apr 2012 14:31
Document Language:English
Status:Published
Refereed:Not peer-reviewed

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