BIn the 1950s Canadian and US east coast waters provided an annual 100,000 tons in cod catches rising to 800,000 by 1970. This over fshing led to a catch of only 300,000 tons by 1975. Canada and the US reacted by passing legislation to extend their national jurisdictions over marine living resources out to 200 nautical miles and catches naturally declined to 139,000 tons in 1980. However the Canadian fshing industry took over and restarted the over fshing and catches rose again until, from 1985, it was the Canadians who were landing more than 250,000 tons of northern cod annually. This exploitation ravaged the stocks and by 1990 the catch was so low (29,000 tons) that in 1992 (121000 tons) Canada had to ban all fshing in east coast waters. In a fshery that had for over a century yielded a quarter-million ton catches, there remained a biomass of less than 1700 tons and the fsheries department also predicted that, even with an immediate recovery, stocks need at least 15 years before they would be healthy enough to withstand previous levels of fshing.CThe devastating fshing came from massive investment poured into constructing huge “draggers”.
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