Fig. 4: Conceptual diagram of the historical coastal vegetation change uncovered at Torrens Island, South Australia.
The oldest 14C date is shown on the x-axis to indicate the timescale of change. Indicative water level is shown on the y-axis. Wedges on the bottom of the figure indicate the measured variables that increased and decreased over time. Changes in the dominant plant community type are indicated by coloured bars at the top of the image. Grey mangrove (Avicennia marina) was detected in the full soil profiles of each core, but this is likely not a true signal in older time periods when a subtidal seagrass community was detected. This signal likely stems from mangrove roots growing deep into the sediment (per observation), which is represented in the diagram by mangrove soil/roots extending into the seagrass habitat.
