Acknowledgements
We thank the farmers and landowners for their cooperation in permitting the sampling of the kettle holes. The authors would also like to acknowledge Dr. Binia De Cahsan and Dr. Michael Westbury for their assistance in analysing the metabarcoding data. Maxi Tomowski, Jonas Stiegler and Victor Parry are thanked for their help with statistics and writing the code in R, and Maxi Tomowski for her assistance in the field. We also thank Dr. Marijke Autenrieth for support with data visualization. This work was supported by Deutsche Forschungsgemeinschaft (DFG) in the framework of the BioMove Research Training Group (DFG-GRK 2118).