Dissolved copper (dCu) biogeochemical cycling in the subarctic Northeast Pacific and a call for improving methodologies

Abstract We investigated biogeochemical cycling of dissolved copper (dCu) along the Line P transect, spanning from the coastal waters of British Columbia, Canada, to the High Nutrient, Low Chlorophyll (HNLC) open Ocean Station Papa (OSP or P26), in the subarctic Northeast Pacific. DCu concentrations ranged from 1.4–3.7 nmol kg − 1 throughout the water column along the transect, and were elevated in the upper and bottom waters near the continental margin (  1100 m respectively) as well as in the upper waters offshore (