Figure 4
From: Drivers of concentrated predation in an Antarctic marginal-ice-zone food web
Depth distribution of krill and silverfish at fast ice edge vs fast ice interior (non-edge) stations during sampling passes 2 and 3. Values are mean Sv (acoustic backscatter dB re 1 m−1) by 10-m depth bins; smaller values indicate weaker backscatter than higher values. Note that Sv values indicate relative abundance within taxa, but do not measure relative biomass of krill compared to silverfish. Error bars indicate the bootstrap-calculated (10000 iterations) 95% confidence interval of the mean.
