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How war increased North Sea fish numbers
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Researchers have found that fish numbers in the North Sea’s Buchan region increased dramatically during the Second World War, when fishing hours dropped from 300,000 hours in 1938 to zero in 1939, according to a report in The Economist.
Doug Beare at the European Commission’s Office of Maritime Affairs, led the study using the artificial marine closure imposed during the war – when fishing became too risky – to examine effects on cod, haddock and whiting.
Revealing their findings in Naturwissenschaften, Dr. Bear found that all three species’ numbers were declining from 1928 to 1939, with an 80 percent fall in two-year-old haddock numbers. During the conflict, haddock number increased twelve-fold, while one-year-old haddock declined 50 percent.
The Economist says the researchers found that all three species continued their pre-war rates of decline once the war ended in 1945. The conclusion: closures affect migratory fish, as well as sedentary fish.
For further information in The Economist, click here
