Physical, chemical and biological oceanographic data collected in Douglas Channel and the approaches to Kitimat, June 2013-July 2014 / C.A. Wright ... [et al.].: Fs97-16/196E-PDF

Water, biological and sediment samples were collected in the Kitimat fjord system in July 2013 and April and July 2014 as part of a new, five-year baseline study. Instrumented moorings were deployed for a year at one site in Hecate Strait and two sites in Douglas Channel. Water samples were analyzed for dissolved oxygen, nutrients, salinity, dissolved inorganic carbon, alkalinity, dissolved organic carbon, coloured dissolved organic matter and oxygen stable isotopes. Instrument casts at the water sampling stations also measured profiles of temperature, salinity, oxygen, transmissivity and fluorescence. Suspended particles were collected at selected sites by filtration. The sediment grab samples were analyzed for organic carbon, total nitrogen, stable isotopes of carbon and nitrogen and mineralogical composition. A sediment core near the Hecate Strait mooring site was also analyzed for 210Pb and 226Ra for radio-dating, in addition to organic composition. Three Baker sediment traps deployed at each of two of the mooring sites collected a record of sinking particles at 50 m depth at 11.5 day intervals over July 2013 –June 2014. The moorings also included sensors to measure current, salinity, temperature, chlorophyll fluorescence and dissolved oxygen.

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