African fish can't stand the heat. Free Technical Library News

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African fish can't stand the heat

05.01.2004

In an East African lake containing 18 percent of the world's fresh water, fish are disappearing due to global warming.

Compared with the middle of the last century, catches in Lake Tanganyika, which lies on the borders of Congo, Tanzania, Zambia and Burundi, have fallen by 30 percent. For the inhabitants of these countries, Lake Tanganyika supplies 25-40 percent of all the animal proteins they consume.

Meteorologists traced the history of the local climate for 80 years according to the records of weather stations and the isotopic composition of sediments at the bottom of the lake. It turned out that the air temperature in the region increased during this time by 0 6 degrees Celsius, and the deep layers of water - by 0,31 degrees.

Experts in the next 80 years predict an increase in temperatures by another one and a half degrees and a further drop in fish stocks in the lake.

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