In order to evaluate previous claims of association between reliance on fishing and matrilineal inheritance practices, the researchers test the association between matriliny and reef density within a 10 km radius among the 186 societies of the Standard Cross Cultural Sample (SCCS). A positive correlation between these variables is complemented by a supplementary analysis of 56 villages in the Solomon Islands, intended to control for phylogenetic and demographic impacts on incidence of matriliny. The authors conclude that ecological factors such as reef density can and do have a direct effect on inheritance rules, with potential secondary effects on welfare and economic development.