Fig. 4
From: Trophic and environmental drivers of the Sechura Bay Ecosystem (Peru) over an ENSO cycle
Percent changes to sum of squares, SS, of the 1996–2003 simulation after the forcing of relative biomass (CPUE) changes of several functional groups ‘drivers’. Average change (bar) and range (line) are displayed. Drivers were applied in all possible sequences and combinations, and SS was corrected for artificial improvements caused by the fitting of the driver’s dynamics. Negative values (i.e. decrease in SS) indicate an improvement in fit