Brisbane River

Bull shark conditions

Bull shark ecological conditions are assessed as MODERATE (development model bull-shark-0.1-dev) with very low confidence. This is not an attack probability and is not the mixed-species 0–100 interaction index.

Factors increasing conditions

• Estuary / river-mouth node — bull sharks can use these systems (ecological basis, not a detection).

Factors reducing conditions

• No live authorised bull-shark detections in vShark.
• Seasonal prior for this month is not the peak east-coast inshore hypothesis window.

Uncertainty

• EAC / current velocity is a candidate variable and is not connected.
• Acoustic receiver health is UNKNOWN — SharkSmart/IMOS tracking is not machine-connected.
• River discharge gauges are not connected; rainfall is only a proxy.

Environmental indicators are not confirmed shark observations. This is not an attack prediction and is not the mixed-species 0–100 index.