Sustainable fisheries needed for global food security

Seafood is a significant source of protein for nearly 3 billion people and is the planet's most highly traded food commodity, contributing to the livelihoods of more than 560 million people. But a lack of coordinated policy threatens global seafood supplies.

To help safeguard future supply, "the price of seafood has to reflect the cost of maintaining ecosystem health in the countries that capture or farm most of it," says Martin D. Smith, lead author of the paper and associate professor of environmental economics at Duke University's Nicholas School of the Environment. "Many imports are coming from developing countries that are not necessarily well-positioned to manage their resources sustainably."

"In an ideal world, each country governs its own resources well and the seafood trade contributes to worldwide economic growth and food security," Smith says. "But that's not the world we live in right now." Developing countries may produce more seafood than they can consume, exporting it and using the earnings to purchase other foods, goods or services.

In their Science article, Smith and his co-authors examine the complex environmental, political and economic factors that jeopardize global seafood supplies and livelihoods.

"Issues of resource ownership and governance are at the top of the list," says Cathy A. Roheim of the University of Rhode Island. No one owns fish stocks or has sole control over what their catch limits should be, or what type of gear or practices can be used to catch them. This has pushed many stocks beyond maximum sustainable yields, and has led to the current precarious role of fisheries in food security.

Concurrently, "aquaculture (farming seafood) has great promise for enhancing food security but is also threatened when regulations fail to protect the supporting ecosystems," says Smith.

Smith, Roheim and their colleagues weigh the pros and cons of three policy options to sustain seafood production.

Trade policies such as import bans and tariffs could be used to punish countries that fail to meet sustainability standards, "but these are rather blunt instruments," Smith says. "In the short run, you may end up hurting people who are the most vulnerable."

Private incentives, such as ecolabeling, that raise the price of seafood to help pay for sustainable practices, are another option. But it's not clear from existing studies if enough consumers will voluntarily pay more for seafood. And raising the price of high-valued products such as shrimp or tuna, which are mostly exported to developed countries, could backfire. Consumers might then seek out less expensive alternatives that people in poor, developing countries depend on. This may raise prices of low-valued products and put products with high nutritional value out of reach of the poorest of the poor.

A third option -- allocating more foreign aid for sustainable infrastructure in developing countries -- provides clear advantages, Smith believes. By specifically earmarking aid for things like sustainable fishing gear, improved management, sustainable aquaculture facilities, or systems to verify sustainability compliance, developed countries will foster food security and ecosystem health, and strengthen seafood trade, without causing short-term hardships to consumers or producers.

"We're not suggesting that foreign aid for sustainability should replace other aid that contributes to food security," Smith notes. "We're just saying this is an option that is often overlooked."

The Duke-led working group is funded by the National Center for Ecological Analysis and Synthesis. Larry Crowder, director of the Nicholas School's Center for Marine Conservation, and Mary Turnipseed, a PhD student at the school, co-founded and co-direct the group with Smith.

Other members come from National Center for Ecological Analysis and Synthesis; University of Rhode Island, University of California-Santa Barbara; University of Stavanger, Norway; Hawaii Institute of Marine Biology; University of Georgia; University of Arizona; Stanford University; World Wildlife Fund; Southwest Fisheries Science Center; Memorial University and Dalhousie University, Canada; Norwegian University of Life Sciences; Whole Foods Market; and Comunidad y Biodiversidad A.C., Mexico.