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Bibliography of the Maurice Lamontagne Institute

Geneviève PAQUETTE

GOBEIL, C., Y. CLERMONT, G. PAQUETTE, 1997. Concentrations en mercure, plomb et cadmium chez diverses espèces de poissons de fond, de poissons pélagiques et de crustacés de l'estuaire et du golfe du Saint-Laurent et du fjord du Saguenay. Rapp. stat. can. sci. halieut. aquat., 1011, 88 p .

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Concentrations of mercury, lead, and cadmium were determined in the muscle of northern shrimp (Pandalus borealis), in the muscle and hepatopancreas of snow crab (Chionoecetes opilio), and in the muscle, liver, and gonads of several fish species from the Estuary and Gulf of St. Lawrence and from the Saguenay Fjord. The fish species include Atlantic cod (Gadus morhua), Greenland halibut (Reinhardtius hippoglossoides), deepwater redfish (Sebastes mentella), American plaice (Hippoglossoides platessoides), thorny skate (Raja radiata), capelin (Mallotus villosus), Atlantic herring (Clupea harengus), and rainbow smelt (Osmerus mordax). The mercury concentrations in tissues of all species were 2 to 10 times lower than the Canadian guideline established to ensure human health protection, with the exception of those in the northern shrimp and snow crab from the Saguenay Fjord, which were near the guideline. Lead concentrations were low, and did not differ markedly, regardless of the species or the tissue, or whether it was from the gulf, the estuary or the fjord. Cadmium concentrations in fish muscle and gonads and in crustacean muscle were also low regardless of the location. However, as often observed, cadmium levels were higher in fish livers and snow crab hepatopancreas.

GOBEIL, C., D. PATON, F.A. McLAUGHLIN, R.W. MACDONALD, G. PAQUETTE, Y. CLERMONT, M. LEBEUF, 1991. Données géochimiques sur les eaux interstitielles et les sédiments de la mer de Beaufort. Rapp. stat. can. hydrogr. sci. océan., 101, 92 p .

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Five sediment box-cores were collected in the Beaufort Sea in September 1990. This report contains the results of the analyses showing the vertical distributions of nutrients (PO4- 3, SiO4- 4, NO3- plus NO2-, NO2-, NH4+, sulfate, chloride, iron and manganese in the porewaters. The vertical profiles of phosphorus, biogenic silicon, carbon, nitrogen, some metals (Mn, Fe, Al, Cd, Pb, Zn) and 210-lead in the solid phase are also included.