Giant ocean fish farms to solve food security? Sept 2017. New Scientist.
Despite decades of overfishing, we’re now eating twice as much fish as we were 50 years ago. While this growing appetite for seafood is good for our health, it’s harming life in the oceans. Almost 60 per cent of global fish stocks are exploited to full capacity and 30 per cent are virtually tapped out.
By 2050, with a predicted human population of around 10 billion and climate change shrinking fish populations at a rate of 20 to 30 per cent for every 1°C rise in sea temperature, we may be seeking novel protein sources.
But fear not. A solution could be in sight, say researchers who have totted up the area of ocean suitable for aquaculture. The study, led by Rebecca Gentry of the University of California, Santa Barbara, identified areas up to 200 metres deep that are right for farming fish and shellfish, but currently unexploited. They amounted to more than 11 million square kilometres, and did not include areas already used for other purposes, such as shipping, oil exploration or conservation.
Read the full article here at New Scientist.