Wednesday, May 04, 2011
Fishing for Sustainable Practices to Conserve Fisheries
Global fish production has reached an all-time high, according to Nourishing the Planet’s latest research for the Worldwatch Institute’s Vital Signs Online publication. Aquaculture, or fish farming—once a minor contributor to total fish harvest—increased 50-fold between the 1950s and 2008 and now contributes nearly half of all fish produced worldwide. According to the U.N. Food and Agriculture Organization, an estimated 53 percent of fisheries are considered fully exploited—harvested to their maximum sustainable levels—with no room for expansion in production. Increased farming of large predators, such as salmon and tuna, has led to overfishing of prey fish—including anchoveta and herring, which are commonly used as fishmeal. In Africa, an estimated 100 million people depend on fish from inland sources, such as lakes and rivers, for income as well as protein and much-needed micronutrients like vitamin A, calcium, iron, and zinc. But coastal fisheries across West Africa have declined by up to 50 percent in the last 30 years due to significant pressure from large industrial fleets.