NIWA
Population modelling software has been developed to capture toothfish population dynamics, age structure, movement, and reproduction and its spatial complexity as a best approximation of the Ross Sea toothfish stock. The spatial structure of the model divides the Ross Sea region into 189 equal-area (24,000 km2) cells. The underlying spatial distribution of the population was either restricted to the 65 cells historically fished, the 120 cells containing habitable depths, or the entire Ross Sea region (all 189 cells).