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Supplemental Information

Additional Information

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

Eduardo Moreno Jiménez conceived and designed the experiments, performed the experiments, analyzed the data, prepared figures and/or tables, authored or reviewed drafts of the paper, approved the final draft.

Sara Aceña-Heras analyzed the data, prepared figures and/or tables, authored or reviewed drafts of the paper, approved the final draft.

Vladimir Fristak analyzed the data, prepared figures and/or tables, authored or reviewed drafts of the paper, approved the final draft.

Stefanie Heinze analyzed the data, prepared figures and/or tables, authored or reviewed drafts of the paper, approved the final draft.

Bernd Marschner conceived and designed the experiments, analyzed the data, contributed reagents/materials/analysis tools, authored or reviewed drafts of the paper, approved the final draft.

Field Study Permissions

The following information was supplied relating to field study approvals (i.e., approving body and any reference numbers):

Soil samples were collected with the permission of the respective landowners:

1. Bert Schulze-Poll and Witiko Ludewig

Trantenrother Weg 25, 58455 Witten, Germany

2. Hubertus Schulte-Kellinghaus

Ekampsweg 1, 46244 Bottrop, Germany

Data Deposition

The following information was supplied regarding data availability:

There are two supplementary material files. One includes supplementary tables and figures to the main paper. The other includes in an Excel file a summary of all the data.

The raw data are provided in the Supplemental Files.

Funding

This work was partly supported by Spanish MINECO, project number CTM2013-48697-C2-2-R. COST Action TD1107 funded Eduardo Moreno Jiménez during his experiments in Germany. There was no additional external funding received for this study. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


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