Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
Table 2 F-statistics (Wright, 1978) calculated for each PGM locus of Potamogeton coloratus, combined across loci, by ditch (D) (columns 2–4); hierarchical F-statistics by ditch and by zone (Z) (columns 5–7)