Figure 4:

Changes in mean electrolyte values in reproductive female hawksbill turtles grouped by total number of nests observed in Rio Grande do Norte. The values for calcium (A), phosphorus (B), sodium (C), and potassium (D) decreased significantly with an increasing number of nesting events (P < 0.05 by Wilcoxon test for all groups, except for the turtles that nested five times and also turtles that nested once). Sample sizes are as follows: five nests, n = 3; four nests, n = 4; three nests, n = 7; two nests, n = 13; and one nest, n = 14.