Figure 4
From: Timing is everything: Drivers of interannual variability in blue whale migration
Krill biomass in the Southern California Region compared to D and B call onset and D call cessation. Annual (2008–2017) spring biomass (log transformed mg carbon per m2 with standard error bars) of adult and juvenile Euphausia pacifica and Thysanoessa spinifera correlated with the onset of D calls (multiple regression partial R2 = 0.52, p = 0.04), cessation of D calls (R2 = 0.28, p = 0.10), and onset of B calls (R2 = 0.36, p = 0.07).
