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Freshwater fishes [Diversity] [Biogeography] [Hydrographic units] [Water masses] [Depth] [Sediments] [Wetlands] [Local richness] [Rarity] [Conservation status] [Diversity and conservation] |
Saltwater fishes [Diversity] [Biogeography] [Salinity gradient] [Aquatic physiographic units] [Distance from the shore] [Depth] [Sediments] [Local richness] [Rarity] [Conservation status] [Diversity and conservation] |
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| Saltwater fishes of the St. Lawrence: diversity |
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The spatial analysis of fish diversity in the marine section of the St. Lawrence was based mainly on over 7,000 experimental trawl tows carried out between 1971 and 1995. Coverage is generally very good, except in shallow waters, untrawlable areas and areas that have little interest a priori for commercial species. In addition, coverage is poor for littoral zones in general, and for the estuary and a large part of the Lower North Shore.
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