Publicado por: pongpesca | 2019/06/12

Twice as Many Fishing Vessels Are Chasing Fewer Fish on the World’s Oceans

Fish for Sale“In 1950, about 1.7 million fishing vessels of all shapes and sizes plied the world’s oceans, but just 20 percent of them had motors, limiting their range and the amount of fish they could collect. Now, 65 years later, the number of boats has jumped to 3.7 million fishing vessels, 68 percent of which are motorized in some form, an increase that is putting more and more pressure on the world’s oceans, according to a new study published in the journal PNAS.

The boom in fishing vessels doesn’t mean there’s plenty of fish in the sea. In fact, it’s quite the opposite. To understand the health of fisheries, ecologists calculate “catch per unit of effort (CPUE)” or the amount of effort and resources it takes to catch a fish. Fishing boats today only catch about 20 percent of the fish for the same amount of effort as boats in 1950, reports Erik Stokstad at Science.”

Ver artigo completo aqui.

Fonte: Smithsosian, 28 de maio de 2019.


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