Figure 1.
Turtle nesting areas in South Africa, and study area for the long-term monitoring program, indicating the marine reserves, index and monitoring areas for the 56 km south of the Mozambique border.
Table 1.
Monitoring protocol over time for the index and monitoring areas.
Table 2.
Tag resighting information (no of seasons, reproductive lifespan and remigration period) for loggerhead and leatherback turtles in Maputaland.
Figure 2.
Counts and baseline model-estimated time-trajectories of counts for loggerheads (Cc; A&B) and leatherbacks (Dc; C&D) for the monitoring area (left panels) and index area (right panels).
Figure 3.
Ratio of the number of leatherback to loggerhead nests over time for the monitoring area from three of the GAM models fitted to the nesting count data.
Figure 4.
Model-estimated indices of relative abundance for the monitoring area by distance from border from the model s(year)+s(distance)+s(week) (upper panels), and the interaction between distance and year from the model s(year * distance) + s(week) (lower panels).
Results are shown for loggerheads (Cc; A&C) and for leatherbacks (Dc; B&D).
Figure 5.
Observed distributions of the within-season inter-nesting interval in days (bars) and the fit of the model to those data (solid line) with A) loggerheads (Cc) and B) leatherbacks (Dc).
Figure 6.
Estimated hatchling production for A) loggerhead (Cc) and B) leatherback (Dc) turtles in Maputaland over time (with the mean±SD) presented.
Figure 7.
Remigration intervals in years for A) loggerhead (Cc) and B) leatherback (Dc) turtles.