Foraging ground assignment (number and %) for the discriminant model based on δ13C and δ15N values of loggerhead RBCs.

Number and % of loggerheads assigned to each foraging ground based on the classification results. Observed classes are in rows, predicted in columns. We used δ13C and δ15N values of the females equipped with satellite tags (n = 14) as training data set to develop the discriminant functions and the untracked turtles (n = 57) as test data set for the discriminant classification. 92.9% of original and of cross-validated grouped cases were classified correctly. Only one southern individual (turtle ID k, Table 1) was misclassified and assigned to the central group.