Fig. 3: Timelines of Calanus hyperboreus abundances, body reserves and trophic markers in the upper and deeper ocean over the winter months (MOSAiC, Nov. 2019–Mar. 2020).

Abundances (ind m−3) of a adult females (AF), b mature AF, c copepod eggs and d Calanus nauplii. Body reserves expressed as e dry mass (mg ind−1), f lipids (% dry mass) and g polyunsaturated fatty acids (% total fatty acids), and h the diatom-specific trophic markers IP25 and IPSO25 (ng g−1 lipid). Lines show trends of the data.