Sea fish is only enough for 50 years

(Photo: parks.or.jp) In an article in Science magazine, Science, an international team of researchers said that reduced marine fish stocks are related to the loss of marine diversity in general. But the team also said that the use of marine protected areas would be able to protect existing marine resources.

Chief researcher Boris Worm of Dalhousie University in Canada said that people still exploit marine resources with the belief that there will always be new species to replace extinct species.

But he told bbcnews.com that the sea has only a limited number of organisms and so far humans have exploited a third and will exploit the rest of the future.

While another scientist involved in the project, Steve Palumbi of Stanford University in California said: "If we don't fundamentally change the way we exploit marine life, this century will is the last century of wild seafood . ''

Fish resources are exhausted

Research has just been completed is a huge project with the participation of scientists in Europe and America. They use four different data types.

Data on the amount of fish caught in the sea shows a decrease in fish stocks. Larger ships, better fishing nets and new technology to detect fish also do not bring a larger catch.

In fact, the global catch has decreased by 13 percent in the period 1994-2003. Historical data from coastal areas in North America, Europe and Australia also show similar decline. Meanwhile, experiments in small ecosystems show that a decrease in ecological diversity will also lead to a decline in fish stocks. And the last piece of data is from fishing zones or minimizing work. fishing.

The data show that protected areas have restored ecological diversity and have led to a recovery in fish stocks.

Scientists say that marine protected areas and fish stocks need to be better managed to retain marine diversity. They also called for a ban on fishing in some areas where fish resources were nearly exhausted to avoid visible and avoidable extinction for some fish species.