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.

Deixe uma Resposta

Preencha os seus detalhes abaixo ou clique num ícone para iniciar sessão:

Logótipo da

Está a comentar usando a sua conta Terminar Sessão /  Alterar )

Google photo

Está a comentar usando a sua conta Google Terminar Sessão /  Alterar )

Imagem do Twitter

Está a comentar usando a sua conta Twitter Terminar Sessão /  Alterar )

Facebook photo

Está a comentar usando a sua conta Facebook Terminar Sessão /  Alterar )

Connecting to %s


%d bloggers like this: