Someone forgot to tell the world’s fish that global warming is a hoax as they are now responding to warmer waters by swimming to higher latitudes and greater depths. A study published in the journal of Nature this week finds, Signature of ocean warming in global fisheries catch.
The study measures the mean temperature of the catch which is a calculation based upon the average temperature preference of the species weighted by their annual catch. They found that this measure has been increasing by almost 0.2 degrees Celcius per decade from 1970 to 2006.
A study conducted in 2010 found that there will be winners and losers in the redistribution of global fish stocks. Under a high emission scenario, which is business as usual and our current trajectory, the catch potential in higher latitudes will increase by over 50%. However in the Indo-Pacific region of the tropics, the catch potential declines by 50% as does the Mediterranean Sea, The Red Sea and Antarctica.
As usual, the people who will be most affected by this are the poor coastal communities of the tropics. These are the people contributing least to the problem in the first place.