Table 3_Production estimates of the dominant copepod Metridia longa from nauplii to adults in the western Arctic Ocean, based on year-round observations at an ice station.docx

In this study, we estimated the production of a dominant copepod, Metridia longa, from nauplii to adults, based on samples collected at the drifting ice station in the western Arctic Ocean over one year. The vertical distribution of M. longa was shallower in winter than in summer.

M. longa showed a one-year generation length and appeared to perform income breeding from May to July. The annual production of M. longa in this region was 424.5 mg DW m^–2 year^–1, representing 35% of the amount reported for the congeneric species in other regions. The lower annual production may be related to the low primary production under year-round sea-ice cover, although primary production was not measured directly in this study.