Aarhus Universitets segl

Communities of Collembola show functional resilience in a long-term field experiment simulating climate change

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

  • Jonathan Bonfanti, Universite de Montpellier
  • ,
  • Mickaël Hedde, Universite de Montpellier
  • ,
  • Jérôme Cortet, Universite de Montpellier
  • ,
  • P H Krogh
  • Klaus S. Larsen, Københavns Universitet
  • ,
  • Martin Holmstrup

Soil ecosystems, and the fauna they host, are known to provide many services and communities of Collembola can be used as bioindicators of soil functionality. Climate change is often expected to threaten Collembola, however, it is possible that it could also favour them. Previous studies have shown that the structure of collembolan communities can be shaped by long-term adaptation to climate, and that temperature plays a major role in the variation of species traits. In this study, we evaluated how the functional composition and structure of collembolan communities are impacted by climate change using an experimental climate manipulation design. The study used data from the CLIMAITE experiment, which was carried out in Denmark in an unmanaged heath/grassland ecosystem that was subjected to the simulated predicted climate for the year 2075. The climate manipulation experiment parameters included elevated temperature, elevated concentration of atmospheric CO 2 and extended drought, which were tested alone and in combination on a total of 48 plots, including controls. Collembola were sampled using 10-cm-depth soil cores after 1, 2 and 8 years of climate manipulation. We posited (i) that a stimulating factor (elevated CO 2) would increase mean body length, and (ii) that an inhibiting factor (drought) would favour traits indicating a euedaphic life or an ability to present resistance mechanisms (scales, ecomorphosis) and would reduce functional structure indices through environmental filtering. The results did not support these hypotheses. While the findings showed sporadic effects of the climatic treatments on the functional composition and structure, they did not demonstrate any general community response pattern. This may be due to limitations of the study in terms of climatic intensity or community assembly, opening perspectives for future experiments in terms of the choice of traits and measurements.

StatusUdgivet - mar. 2022

Bibliografisk note

Funding Information:
JB received a PhD grant from Université Paul-Valéry Montpellier 3 . The CLIMAITE experiment was supported by the Villum Foundation , Air Liquide Denmark A/S , DONG Energy and the INCREASE project (‘Integrated Network on Climate-change Research Activities on Shrubland Ecosystems’) (EC FP7‐Infrastructure‐2008‐1 Grant Agreement 227628 ). The authors would like to thank all the BETSI database project managers and contributors. JB is grateful for the constructive remarks on the preliminary results from his colleagues during the TEBIS network annual meeting and the SFE² 2018 International Conference on Ecological Sciences. The authors would also like to thank Zdenek Gavor for his helpful expertise on Collembola identification. We are thankful to C. Barreto and Z. Lindo for leading this special issue and to the reviewers who helped us improving our manuscript.

Publisher Copyright:
© 2022 Elsevier GmbH

Se relationer på Aarhus Universitet Citationsformater

ID: 205751796