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Effects of farming system and simulated drought on biodiversity, food webs and ecosystem functions in the DOK trial

Birkhofer, Klaus; Carnero, D.S.; Fliessbach, A.; Gavin, P.; Hedlund, K.; Ingimarsdóttird, M.; Jørgensen, H.B.; Kozjek, K.; Kundel, D.; Laraño, J.M.; Mäder, P.; Meyer, S.; Montserrat, M.; Scheu, S. and Truu, J. (2019) Effects of farming system and simulated drought on biodiversity, food webs and ecosystem functions in the DOK trial. In: Agroscope, FiBL, ETH (Eds.) Program and abstract book. Comparing organic and conventional agricultural cropping systems - What can be learned from the DOK and other long-term trials? Congressi Stefano Franscini, Monte Verità, Ascona, Switzerland, October 6-10, 2019, p. 57.

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Summary

Organic agriculture promotes overall biodiversity in arable fields, with well-documented positive effects on plant and pollinator diversity and abundance. Responses of soil-living decomposers, aboveground herbivores and predators to organic farming are less uniform and not equally well understood. The DOK trial offers ideal conditions to assess the long-term effects of organic compared to conventional farming practices on these above- and belowground invertebrate communities. Organic treatments in the DOK trial have a pronounced effect on abundances, diversity and species composition across taxonomic borders. Application of farmyard manure promotes nematode and earthworm numbers, whereas mineral fertilizers detrimentally affected potworm and fly larvae numbers. Aboveground predators are more abundant under organic agriculture and herbivores show an opposite response. However, effects go beyond simple numeric responses as organic agriculture alters the species composition of local communities significantly.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:soil sciences, DOK, long-term experiments, DOK trial, biodiversity
Subjects: Knowledge management > Research methodology and philosophy > Systems research and participatory research
Soil
Environmental aspects > Biodiversity and ecosystem services
Research affiliation: Spain > CSIC (Spanish National Research Council)
Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Soil Sciences
Germany > University of Göttingen
Estonia
Sweden > University of Lund
Germany > Other organizations
Related Links:https://www.fibl.org.live.fibl.info/en/locations/switzerland/work-areas-switzerland/soil-sciences.html
Deposited By: Fließbach, Dr. Andreas
ID Code:36894
Deposited On:04 Dec 2019 12:58
Last Modified:04 Dec 2019 12:59
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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