Figure 2
From: Fine-scale structures as spots of increased fish concentration in the open ocean
Bootstrap method results. AFC values were separated according to the respective FSLE and SST gradient values, using a threshold as a limit to define a front (0.08 days\(^{-1}\) and 0.009\({^\circ }\)C/km respectively;18,47) Light gray columns represent the mean AFC under the respective threshold, considered outside a front. Dark gray columns represent the mean AFC over the threshold, thus in proximity of a front. Left columns refer to FSLE analysis, right columns to SST gradient. Error bars indicate the standard deviation, while black stars indicate the significance of the bootstrap test (***: p<0.001).
