Biomass Turnover Rates in Metabolically Active and Inactive Marine Calanoid Copepods

Lipid-storing copepods are fundamental to the functioning of marine ecosystems, transferring energy from primary producers higher trophic levels and sequestering atmospheric carbon (C) in deep ocean. Quantifying transfer biogeochemical cycling by requires improved understanding copepod metabolic rates both surface waters during lipid-fueled metabolism over winter. Here we present new biomass turnover C nitrogen (N) Calanoides acutus , natalis Calanus glacialis hyperboreus alongside published data for finmarchicus pacificus . Turnover metabolically active animals, normalised 10°C, ranged between 0.007 – 0.105 d -1 0.004 0.065 N, respectively. were typically faster than those supporting that non-protein C, e.g. lipid, is catabolised protein. Re-analysis indicates inactive, overwintering C. turn wax ester lipids at a rate 0.0016 These other basal will facilitate mechanistic representation physiology global models, thereby reducing uncertainties our predictions future ocean ecosystem sequestration.