Cost of carbon dating wood
"Because if we rebuild stocks, we can rebuild to more than we thought before." There has been success in some places where fishing has been restricted for a few years, for example in the Norwegian herring and cod fisheries. Pauly said: "I don't see African countries, for example, rebuilding their stocks, or being allowed to by the foreign fleets that are working there, because the pressure to continue to fish is very strong.We know how to fix this problem but whether we do it or not depends on conditions that are difficult." A 2015 study showed nearly 500 Chinese fishing vessels operating off west Africa, with scores of cases of illegal fishing, according to Greenpeace.All of these activities need investment and support of governments around the world to make them happen," Lascelles said."These actions will build resilience in the seabird populations in the short term, which they need in the face of emerging threats such as climate change." Scientists call it Atlantic Meridional Overturning Circulation (AMOC).
The new research estimates the peak catch was 130 million tons, but declined at 1.2 million tons per year afterwards.
Without swift, national action to protect the ocean's vast diversity of life from acidifying waters corals, shellfish, salmon and a whole host of beautiful creatures will be lost.
We need your help to ask President Barack Obama and the Environmental Protection Agency to get working on a bold plan to curb ocean acidification.
Prof Daniel Pauly, at the University of British Columbia in Canada and who led the work, said the decline is very strong and "is due to countries having fished too much and having exhausted one fishery after another." Prof Boris Worm, at Dalhousie University in Canada and not involved in the new research said.
"This was a Herculean task that no one else has ever attempted.