
Keywords: ثابت ثابت مشروط; Cu; copper; NH3; ammonia; AOA; ammonia-oxidizing archaea; AOB; ammonia-oxidizing bacteria; Fe; iron; PNM; primary nitrite maximum; ETSP; eastern tropical South Pacific; O2; dissolved oxygen; NO3â; nitrate; NO2â; nitrite; NH4+; ammonium; PO43Â â; pho