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The relationship between PP (2010 annual average mg C m−2 d−1) and the estimated mesopelagic fishes biomass using the median db/weight ratio (black circles) and the ECOTROPH model with a transfer efficiency of 0.1 and considering that 90% of the PP enters the food web (red line). The regression equation of the acoustic biomass estimate against PP is mesopelagic fishes biomass (g m−2)=0.185 PP (mg C m−2 d−1)—6.66, r2=0.46, P<0,001, n=209).
