Fig. 1: Zooplankton DVM and light intensities in Kongsfjorden around the spring equinox.
From: Animal behavior is central in shaping the realized diel light niche
a Vertical zooplankton distribution as backscatter intensity (Sv). The disturbance at ~120 m results from the ADCPs being located at that depth and not being able to measure in direct proximity. b Diel light cycle of PAR irradiance and attenuation with depth. Solid black line: zooplankton center of mass (COM), dotted lines: −70 dB backscatter thresholds indicating range of zooplankton aggregation. c Logarithmic PAR irradiance just below the surface, at a constant depth of 120 m, and the realized diel light niche at the COM. Gray shading indicates PAR in the −70 dB range shown in panel (b). For times where the −70 dB range could not be properly determined, it was left out. Dates on the x-axis indicate the start (midnight) of the respective days.
