Figure 4

Stable isotope values from skin samples collected from nesting leatherback turtles within the iSimangaliso Wetland Park, South Africa between 2011 and 2013.

Coloured circles represent individuals that were tracked using satellite telemetry into oceanic foraging areas in the Western Indian Ocean (WIO, green circles) or the South Atlantic Ocean (SAO, orange circles), as well as coastal foraging areas in the Mozambique Channel (MC, red circles). Discriminant function analysis was used to assign foraging areas for turtles that were not tracked by satellite. Turtles with >80% probability of group membership were designated as either coastal (gray circles) or oceanic individuals (black circles). Individuals with <80% probability of group membership were left unassigned (clear circles). Leatherback turtles tracked to coastal foraging habitats in the Mozambique Channel had distinct stable isotopic values from those tracked to oceanic foraging habitats in the Western Indian or South Atlantic Ocean.