Climate warming affects marine fisheries and threatens food production

According to the Hong Kong Wen Daily, a study said that the warming of the global climate led to an increase in sea water temperature, and that the number of fish that could be caught by human beings dropped by 4.1% between 1930 and 2010, equivalent to 1.4 million metric tons, which had a profound impact on the main food sources of human beings. A study published in the Journal Science by Rutgers University in the United States indicates that 93% of the greenhouse gases produced by humans are absorbed by the oceans, warming the ocean, and marine life is the first to be affected. Researchers collected data on 235 different species of fish distributed in 38 different ecological environments, all of which were fished in a sustainable manner. Researchers'data show how fish respond to changes in the surrounding environment, and the data are compared with changes in ocean temperatures in each region. The whole study lasted for 80 years, during which the total fish population decreased by 4.1%, while the situation in the northeastern Atlantic and the Sea of Japan was more serious, with the largest reduction of 35%.

Fry, the main author of the report, mentioned that East Asia had the largest decline, with the fastest population growth in the world, and some ethnic groups depended heavily on seafood as food. As fisheries continue to decline, some countries in the region may need imported fish to eat, leading to soaring prices.

However, not all fish populations have been reduced by warming sea water. For example, the number of striped sawdust on the eastern coast of the United States has increased by 6%. The reason is that other species in the region have died of warming sea water, which has increased the area where striped sawdust grows. But "one day is the winner of climate change, not always the winner." If the sea water continues to warm, the production of such marine organisms will still have a great opportunity. It will fall.

The United Nations published its findings in February, referring to the declining global species and ecological diversity, threatening human food sources and agricultural systems, and the underlying causes are related to climate change and population.

Another report published in February in the Journal Progress in Science indicates that if human beings succeed in controlling the rise of global average temperature by less than 1.5 degrees Celsius compared with the industrial age under the Paris Accord, global fisheries will generate hundreds of millions of dollars in additional income, concentrated in developing areas that rely on fish for protein intake. Freey mentioned that in order to cope with climate change, all aspects must be strengthened accordingly. Regulate.