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A Global Assessment of Salmon Aquaculture Impacts on Wild Salmonids

Figure 2

Estimated Effects of Salmon Farming

All estimates are for Atlantic salmon unless otherwise noted.

(A) Estimated percent change in survival of wild salmonids associated with salmon farming, per generation per tonne of farmed salmon production.

(B) Estimated percent change in survival of wild salmonids associated with salmon farming, per generation, at the mean tonnage of farmed salmon harvested in each region, during the study period. The meta-analytic mean has been scaled to show mean reduction in survival when harvest of farmed salmon in the region is 15,000 t.

(C and D) As for (A) and (B), but representing the change in returns to each stock (rather than survival). The bars represent 95% confidence intervals.

Figure 2

doi: https://doi.org/10.1371/journal.pbio.0060033.g002