By mapping the growth and spread of industrial fisheries using the Sea Around Us data, the researchers found that these global trends were dominated by the heavily subsidized fleets of a small number of countries that have increased the total area fished from 60 per cent to 90 per cent of the world’s oceans.
As much as 54 per cent of the high seas fishing industry would be unprofitable at its current scale without large government subsidies, according to a new study by researchers from the National Geographic Society; the University of California, Santa Barbara; Global Fishing Watch; and the Sea Around Us project at the University of British Columbia and the University of Western Australia.
The research, published today in the open-access journal Science Advances, found that the global cost of fishing in the high seas ranged between $6.2 billion and $8 billion in 2014. Profits from this activity range between a loss of $364 million and a profit of $1.4 billion.
Industrial fisheries that rely on bottom trawling to catch fish threw 437 million tonnes of fish and $560 billion overboard over the past 65 years, finds new research.
The study documents the growth in bottom trawling, a practice that results in nets full of unwanted or unneeded fish that fishers dump overboard.
The Persian Gulf may lose up to 12 per cent of its marine biodiversity in some areas before the end of the century if countries in the region do not take measures to address climate change.
According to scientists at the University of British Columbia and the University of Western Australia, a business-as-usual climate scenario will severely affect species richness off the coast of Saudi Arabia, Bahrain, Qatar and the United Arab Emirates (UAE) by the end of the century.
Bottom trawling is causing “boom and bust” fisheries.
A new study using the Sea Around Us’ reconstructed catch data reveals that in the past 60+ years, the practice of towing giant fishing nets along the sea floor has caused the extraction of 25 million tonnes of fish that live 400 metres or more below sea level leading to the collapse of many of those fish populations.