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HUDON, C., R. MORIN, J. BUNCH, R. HARLAND, 1996. Carbon and nutrient output from the Great Whale River (Hudson Bay) and a comparison with other rivers around Quebec. Can. J. Fish. Aquat. Sci., 53: 1513-1525 .
The annual load and the composition of material exported to the coast of Hudson Bay were characterized and modelled over the hydrological cycle of the Great Whale River. Annual exportations of particulate inorganic matter (PIM), particulate organic matter (POM), and dissolved organic carbon (DOC) to Hudson Bay were estimated at 135 000, 21 000, and 90 000 t, respectively. PIM, POM, and DOC concentrations were positively related to discharge, as were concentrations of coarse (>1 mm), fine (53 µ-1mm), and very fine (0.7-53 µ) particulate organic matter. Of the three size fractions, very fine particulate organic matter exhibited the highest heterotrophic activity, the lowest C :N ration, and the highest chlorophyll a concentration (1 µg•L-1 during summer. During the ice break up period, 25-35 % of the yearly PIM load, 23% of the POM load, 11 % of the DOC load, and 5-14 % of the dissolved nutrient load were exported to Hudson Bay. River waters were less concentrated in nutrients than Hudson Bay coastal waters. Comparison of DOC output with that of 46 other rivers draining the Precambrian Shield shows that, for a given runoff value, rivers flowing through tundra to Hudson and Ungava bays carried a specific DOC load aout half that of rivers flowing through forested basins to the Gulf of St. Lawrence.
This report presents a tabulation of all oceanographic and biological data collected during the summers of 1989 and 1990 in two fjords, Sugluk Inlet and Wakeham Bay, located on the Quebec coast in western Hudson Strait. The data set includes information on the vertical distribution of temperature, salinity, nutrients (PO4, NO3), and oxygen as well as total, particulate and dissolved organic carbon, bacterial and phytoplankton counts, chlorophyll a, and the composition and abundance of the phytoplankton and zooplankton communities. In Sugluk Inlet the vertical distribution of temperature, salinity and zooplankton in the vicinity of the fjord sill was examined at intervals during a tidal cycle. The water flow across the sill of Sugluk Inlet was measured during a two week period by means of a moored current meter. (DBO).
RUNGE, J.A., M. BRADSTREET, J. BUNCH, S. DEMERS, E.H. GRAINGER, S. HSIAO, G. INGRAM, M. POULIN, J. ROFF, C. TAGGART, W. WELCH, 1990. Report of planktonic and ice production working group. Pages 24-28 in J.A. Percy (ed.). Proceedings of a workshop : Marine Ecosystem Studies in Hudson Strait, November 9-10, 1989, Montréal, Québec. Dept. of Fisheries and Oceans (Can. Tech. Rep. Fish. Aquat. Sci., 1770) .
BUNCH, J.N., R.C. HARLAND, 1990. Bacterial production in the bottom surface of sea ice in the Canadian subarctic. Can. J. Fish. Aquat. Sci., 47: 1986-1995 .
SNOW, N.B., W.E. CROSS, R.H. GREEN, J.N. BUNCH, 1987. The biological setting of the BIOS site at Cape Hatt, N.W.T., including the sampling design, methodology and baseline results for macrobenthos. Arctic, 40 (Supp. 1): 80-99 .
BUNCH, J.N., 1987. Effects of petroleum releases on bacterial numbers and microheterotrophic activity in the water and sediment of an Arctic marine ecosystem. Arctic, 40 (Supp. 1): 172-183 .
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