Acknowledgements
We thank Þorvaldur Gunnlaugsson, Gísli Víkingsson (†), Yves Morin and
Santiago Lens for providing access to Icelandic, Canadian and Iberian
porpoise samples, respectively. We would further like to thank Katja
Havenstein, Ljerka Lah, and all the other people in our lab that
isolated DNA from porpoise samples throughout the years. Large-scale
computations were carried out at the High-Performance Computing Cluster
managed by ZIM (Zentrum für Informationstechnologie und
Medienmanagement) at the University of Potsdam. We are grateful to the
ZIM team for assisting with the installation of modules in the computing
cluster. This work was financially supported by the Bundesamt für
Naturschutz (FKZ 3521532214) granted to R.T. and the University of
Potsdam