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Additional Information

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

Germán Baldi conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, prepared figures and/or tables.

Marcos Texeira performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, reviewed drafts of the paper.

Osvaldo A Martin performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, reviewed drafts of the paper.

H. Ricardo Grau reviewed drafts of the paper.

Esteban G Jobbágy reviewed drafts of the paper.

Data Deposition

The following information was supplied regarding data availability:

http://gea.unsl.edu.ar/publicaciones.php#7a

Funding

This work was funded by grants from the International Research Development Center (IDRC-Canada, Project 106601-001), the Inter-American Institute for Global Change Research (IAI, CRN3 095), which is supported by the US National Science Foundation (Grant GEO-1128040), and the Agencia Nacional de Promoción Científica y Tecnológica (PICT-2013-2973). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


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