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. 2020 May 27;7:281. doi: 10.3389/fvets.2020.00281

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Copyright © 2020 Brzoska, Fischer and Lentz.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Hierarchical structure after a nested SBM. The levels i (A), h (B), and g (C) are geographically shown. The blocks show high spatial correlation on all levels of the hierarchy. Panel (D) shows the hierarchy tree.