<i>Thysanoessa macrura</i>.

<p>Density of postlarval krill [ind. m⁻²] at the open surface and under ice (0–2) m in summer (2007/2008), autumn (2004) and winter (2006). Mean values significantly different from each other (ANOVA <i>p</i><0.05) were printed in bold. ice = under-ice SUIT hauls; ow = open water SUIT hauls; <i>n</i> = number of samples.</p

<i>Euphausia superba</i>.

<p>Comparison of the size distributions of postlarval krill in the surface layer and the 0–200 m layer in summer (2007/2008), autumn (2004) and winter (2006). <i>p</i>: Kolmogorov-Smirnov test significance.</p

Under-ice versus open water comparison of geometric mean densities of postlarval <i>Thysanoessa macrura</i> in summer (2007/2008).

<p>(<b>A</b>) <i>Thysanoessa macrura</i> from the 0–2 m layer, and (<b>B</b>) from the 0–200 m layer. Error bars denote value ranges. Bold red bars indicate 25% to 75% percentile ranges. ice = under-ice SUIT hauls; ow = open water SUIT hauls.</p

Under-ice versus open water comparison of geometric mean densities of postlarval <i>Euphausia superba</i> in (A–B) summer (2007/2008), (C–D) autumn (2004), and (E–F) winter (2006).

<p>(<b>A, C, E</b>) <i>Euphausia superba</i> from the 0–2 m layer, and (<b>B, D, F</b>) from the 0–200 m layer. Error bars denote value ranges. Bold red bars indicate 25% to 75% percentile ranges. ice = under-ice, ow = open water SUIT hauls.</p

<i>Euphausia superba</i>.

<p>Generalized Additive Models of the density of postlarval krill. Effect of additive smoothing functions of (<b>A</b>) proportional ice coverage during SUIT hauls, and (<b>B</b>) mixed layer depth in summer (2007/2008), (<b>C</b>) salinity in the 0–200 m depth layer in autumn (2004), and (<b>D</b>) temperature in the mixed layer in winter (2006) on the fitted density of postlarval krill. Dashed lines show 95% confidence intervals of smoothers.</p

<i>Euphausia superba</i>.

<p>Day/night comparisons of the surface layer density of (<b>A</b>) postlarval krill at three locations in summer (2007/2008), (<b>B</b>) postlarval krill, and (<b>C</b>) furcilia larvae at two locations in winter (2006). Scaling of y-axis differs. Denotations above bars are location codes. d = daytime, night = night-time; ice = under-ice, ow = open water SUIT hauls.</p

<i>Euphausia superba</i>.

<p>Density of postlarval krill and furcilia larvae [ind. m⁻²] at the open surface and under ice (0–2 m) in summer (2007/2008), autumn (2004) and winter (2006). Geometric mean values significantly different from each other (ANOVA <i>p</i><0.05) were printed in bold. ice = under-ice SUIT hauls; ow = open water SUIT hauls; <i>n</i> = number of samples.</p