Acknowledgements
We thank Andrew Hendry, Philippe Huneman and two anonymous referees for
their critical but stimulating comments and discussions. ML was
supported by the TULIP Laboratory of Excellence (ANR-10-LABX-41), PJ by
the CNRS Institute for Ecology and Environment, and JM by the U.S.
Department of Energy, Office of Biological and Environmental Research
(DE-SC0020382).