**5. Conclusions**

The main findings of the present study are that:


To conclude, biochar was found to increase springtails abundance and diversity in field conditions. A greater occurrence of species better adopted to life in the soil with biochar use indicated better soil quality. Thus, we can recommend the use of the morphological diversity of Collembola as a good tool for the bioindication of soil health.

**Author Contributions:** Conceptualization, I.G. and J.P.T.; Methodology, A.L., J.K. and A.M.-J.; Formal analysis, I.G. and J.P.T.; Writing, Original Draft Preparation, Review and Edition, I.G., and J.P.T.

**Funding:** This research received no external funding.

**Acknowledgments:** We kindly thank the Fluid S.A. Company for free-of-charge delivery of biochar for the experiment. We are greatly indebted to Kamila Twardowska and Joanna Magiera-Dulewicz for support in laboratory experiments.

**Conflicts of Interest:** The authors declare no conflicts of interest.
