Relationships between composition and size distribution of invertebrates colonizing navigation buoys and physico-chemical parameters of the St. Lawrence River, Montreal (Quebec).

Vincent. Mercier
Water, algae and invertebrates colonizing navigational buoys at 18 sites in the Montreal area of the St. Lawrence River were sampled during the spring, summer and fall of 1995 to assess which measures of invertebrate assemblages (density, biomass, size distribution, and taxonomic composition) best respond to wastewater discharge and to compare invertebrate responses among sampling dates. Increases of up to five orders of magnitude in fecal coliforms, 2-fold increases in TP and PO$\sb4,$ 20-fold increases...
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