The Polar Bears are going to become extinct soon. Hurricanes will batter the Manhattan at the rate of one per week. East Anglia will get submerged under the North Sea. These are some of the terrible predictions which await mankind if it still does not heed the global warming and its outcomes.
A new study has upped the ante and it has to do with the fish. If the prediction comes true, a major portion of the world population will be without a primary source of proteins.
A large numbers of fish species are predicted to empty the tropical oceans by 2050 as the temperatures of the oceans rise. The fish will leave its tropical paradise and move towards the warming Arctic and Antarctic waters.
A fall in the fish production by itself has far reaching consequences and a total loss of fish from the tropical waters will have huge social and economic impact on the population of these regions.
If we take the most optimistic scenario, the Earth will warm by one degree Celsius by the year 2100. Even this miniscule temperature variation will force the fish to move 15 kilometers north or south every decades.
However scientists are preparing for the worst case scenario and in this case the oceans will warm by 3 degrees Celsius and the fishes will then migrate at the rate of 26 kilometers per decade. People in certain hotspots, which will see the complete extinction of fishes from their waters, will be the hardest hit.
The study was carried out under the aegis of University of British Columbia (UBC) used the same climate change models as the Intergovernmental Panel on Climate Change. The figures, according to the panel are consistent with what has been actually happening in the last few decades.
The team of researchers used models to predict how the 802 commercially-important species of fish and invertebrates would react to warming water temperatures. They also evaluated the changing ocean parameters and the prospects of new habitats which will open up in the Arctic and the Antarctic regions due to the melting of the polar ice and the warming of the oceans.
William Cheung, associate professor at the UBC Fisheries Centre and co-author of the study, said: “The tropics will be the overall losers. This area has a high dependence on fish for food, diet and nutrition. We’ll see a loss of fish populations that are important to the fisheries and communities in these regions.”