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Article Dans Une Revue Nature Communications Année : 2021

Above- and belowground biodiversity jointly tighten the P cycle in agricultural grasslands

Yvonne Oelmann
Markus Lange
Sophia Leimer
Felipe Aburto
Doreen Berner
  • Fonction : Auteur
Steffen Boch
Runa S Boeddinghaus
François Buscot
Sigrid Dassen
  • Fonction : Auteur
Gerlinde de Deyn
Kezia Goldmann
Norbert Hölzel
  • Fonction : Auteur
Ellen Kandeler
  • Fonction : Auteur
Valentin H Klaus
Till Kleinebecker
Sven Marhan
  • Fonction : Auteur
Daniel Prati
  • Fonction : Auteur
Deborah Schäfer
  • Fonction : Auteur
Cameron Wagg
Wolfgang Wilcke

Résumé

Experiments showed that biodiversity increases grassland productivity and nutrient exploitation, potentially reducing fertiliser needs. Enhancing biodiversity could improve P-use efficiency of grasslands, which is beneficial given that rock-derived P fertilisers are expected to become scarce in the future. Here, we show in a biodiversity experiment that more diverse plant communities were able to exploit P resources more completely than less diverse ones. In the agricultural grasslands that we studied, management effects either overruled or modified the driving role of plant diversity observed in the biodiversity experiment. Nevertheless, we show that greater above- (plants) and belowground (mycorrhizal fungi) biodiversity contributed to tightening the P cycle in agricultural grasslands, as reduced management intensity and the associated increased biodiversity fostered the exploitation of P resources. Our results demonstrate that promoting a high above- and belowground biodiversity has ecological (biodiversity protection) and economical (fertiliser savings) benefits. Such win-win situations for farmers and biodiversity are crucial to convince farmers of the benefits of biodiversity and thus counteract global biodiversity loss.
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Dates et versions

hal-04177084 , version 1 (03-08-2023)

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Yvonne Oelmann, Markus Lange, Sophia Leimer, Christiane Roscher, Felipe Aburto, et al.. Above- and belowground biodiversity jointly tighten the P cycle in agricultural grasslands. Nature Communications, 2021, 12 (1), pp.4431. ⟨10.1038/s41467-021-24714-4⟩. ⟨hal-04177084⟩
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