Trend in population number and distribution of Murray crayfish (Euastacus armatus)

Abundance and distribution of Murray crayfish, Euastacus armatus, in the southern Murray-Darling Basin have been decreasing due to cumulative pressures of recreational harvesting, river regulation, pesticides and pollutants, habitat change and events of low dissolved oxygen (hypoxic ‘blackwater’ disturbance).
Southern Murray-Darling
Population abundance and distribution