Conventional agriculture and not drought alters relationships between soil biota and functions

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2021
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Birkhofer, Klaus
Fliessbach, Andreas
Gavín-Centol, María Pilar
Hedlund, Katarina
Ingimarsdóttir, María
Jørgensen, Helene Bracht
Kozjek, Katja
Meyer, Svenja
Montserrat, Marta
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Scientific Reports. Springer Nature. 2021, 11, 23975. eISSN 2045-2322. Available under: doi: 10.1038/s41598-021-03276-x
Zusammenfassung

Soil biodiversity constitutes the biological pillars of ecosystem services provided by soils worldwide. Soil life is threatened by intense agricultural management and shifts in climatic conditions as two important global change drivers which are not often jointly studied under field conditions. We addressed the effects of experimental short-term drought over the wheat growing season on soil organisms and ecosystem functions under organic and conventional farming in a Swiss long term trial. Our results suggest that activity and community metrics are suitable indicators for drought stress while microbial communities primarily responded to agricultural practices. Importantly, we found a significant loss of multiple pairwise positive and negative relationships between soil biota and process-related variables in response to conventional farming, but not in response to experimental drought. These results suggest a considerable weakening of the contribution of soil biota to ecosystem functions under long-term conventional agriculture. Independent of the farming system, experimental and seasonal (ambient) drought conditions directly affected soil biota and activity. A higher soil water content during early and intermediate stages of the growing season and a high number of significant relationships between soil biota to ecosystem functions suggest that organic farming provides a buffer against drought effects.

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570 Biowissenschaften, Biologie
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ISO 690BIRKHOFER, Klaus, Andreas FLIESSBACH, María Pilar GAVÍN-CENTOL, Katarina HEDLUND, María INGIMARSDÓTTIR, Helene Bracht JØRGENSEN, Katja KOZJEK, Svenja MEYER, Marta MONTSERRAT, Dominika KUNDEL, 2021. Conventional agriculture and not drought alters relationships between soil biota and functions. In: Scientific Reports. Springer Nature. 2021, 11, 23975. eISSN 2045-2322. Available under: doi: 10.1038/s41598-021-03276-x
BibTex
@article{Birkhofer2021-12-14Conve-56365,
  year={2021},
  doi={10.1038/s41598-021-03276-x},
  title={Conventional agriculture and not drought alters relationships between soil biota and functions},
  volume={11},
  journal={Scientific Reports},
  author={Birkhofer, Klaus and Fliessbach, Andreas and Gavín-Centol, María Pilar and Hedlund, Katarina and Ingimarsdóttir, María and Jørgensen, Helene Bracht and Kozjek, Katja and Meyer, Svenja and Montserrat, Marta and Kundel, Dominika},
  note={Article Number: 23975}
}
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