Table 1.

Comparison of the community risk with the mean risk to stocks for some simple examples. Precautionary is taken to mean that the risk metric is < 0.05, to be consistent with the single species approach

	Scenario risk profile
	n = 21 5% risk of depletion across the community All stocks R = 0.05	n = 21 One stock depleted, others untouched. One stock has R = 1.0 All other stocks R = 0	n = 21 Two stocks have R = 0.5 19 stocks have R = 0	n = 21 5 stocks have R = 0.2 17 stocks have R = 0	n = 21 10 stocks have R = 0.1 11 stocks have R = 0
Mean risk to stocks	0.05	0.0476	0.0476	0.0476	0.0476
Fish community risk metric	0.05	1.00	0.0869	0.0562	0.0502

Cell colours illustrate the overall risk. Green = precautionary (<0.05), yellow = 0.05, the limit of precautionarity, and shades of orange and red are progressively less precautionary, with dark red = certainty of stock depletion.