Acknowledgements
This research was funded by the European Union Seventh Framework
Programme (FP7/2007-2013 ) under\\ . Artemi Cerdà thanks the
Co-operative Research programme from the OECD (Biological Resource
Management for Sustainable Agricultural Systems) for its support with
the 2016 CRP fellowship (OCDE TAD/CRP JA00088807). We thank Nathalie
Elisseou Léglise for her kind management of our financial support. The
collaboration of students from the Degree of Geography and Environmental
Sciences was fruitful and enjoyable. The music of Hilari Alonso (A prop)
was an inspiration during the writing of this paper at the COVID19 time.