Pacific bluefin tuna are in trouble — they’re at just 2.6% of historic, pre-fishing levels. They have been overfished and this overfishing is still continuing. Due to this dire situation, proper management of the stocks is increasingly important, yet information of the fish’s life history and migration patterns is limited.
Developing nations, which have contributed little to the issue of climate change, are likely to experience reduced livelihood opportunities and emerging dietary nutrient deficiencies as a result of climate change impacts on fisheries.
Solutions to blue carbon emissions: Shrimp cultivation, mangrove deforestation and climate change in coastal Bangladesh
Bangladesh is a world leader in aquaculture production, ranking sixth after China, Indonesia, India, Vietnam, and the Philippines. Due to the nation’s favourable physical characteristics, Bangladesh is highly suitable for coastal aquaculture, especially the tiger shrimp sector. Shrimp culture has diversified livelihood opportunities for coastal communities, as over two million people are involved in fish farming, market, processing, and exporting.
By Richard Caddell, Nereus Program Fellow at Utrecht University
It is increasingly evident that profound changes will be necessary to current fishing practices in order to meet future global demand for seafood. Many fisheries are already operating at or beyond their ecological and economic capacity, while climate change and associated processes are projected to have significant impacts upon the future distribution of fish stocks.
We know that fuel use contributes to climate change, but in a vicious circle, climate change could also increase fuel use in fishing. This is due to fish shifting their distributions due to warming waters. With this increased use of fuel and the increasing price, small-scale and artisanal fishers will have a harder time sustaining livelihoods and feeding their families under climate change.
You’ve seen the headlines – tuna is in trouble. “Bleak outlook for sushi favourite as bluefin tuna levels drop 97 per cent,” writes the Telegraph. CBS News says: “Sushi eaters pushing Pacific bluefin tuna to brink of extinction”. Does this mean that you should be putting down those tuna sandwiches and spicy tuna rolls? Not necessarily.
According to the FAO, anchovy and sardine made up 13% of global catch in 2012. These small fish are consumed by humans, marine mammals, seabirds, squid, and other fish. They are also used for aquaculture feed, industrial oil, and health supplements. “Climate, Anchovy, and Sardine” a new study in the Annual Review of Marine Science, co-authored by Nereus Alumni Rebecca Asch (Princeton University) and Ryan Rykaczewski (University of South Carolina), reviews the past, present, and future of anchovy and sardine.
Meeting the Paris Agreement global warming target of 1.5°C will have large benefits to fisheries, finds a new Nippon Foundation-Nereus Program study published in Science. For every degree Celsius decrease in global warming, potential fish catches could increase by more than three million tonnes per year.
Scenarios for investigating the future of Canada’s oceans and marine fisheries under environmental and socioeconomic change
Fisheries Economics Research Unit (UBC) Research Associate Louise Teh, Nereus Director of Science William Cheung, and OceanCanada Director and Nereus Research Associate (Honourary) Rashid Sumaila recently had a paper (“Scenarios for investigating the future of Canada’s oceans and marine fisheries under environmental and socioeconomic change“) published in Regional Environmental Change, wherein they review existing methods of scenario analysis (preparing for future response based on multiple potential outcomes) in the marine conservation and fisheries sectors in Canada.
Thai, Burmese, Cambodian, and Indonesian men are subject to forced labor on Thai and foreign-owned fishing boats. Some remain at sea for several years, are paid very little or irregularly, work as much as 18 to 20 hours per day for seven days a week, or are reportedly threatened, physically beaten, drugged to work longer, and even killed for becoming ill, attempting to escape, or disobeying orders.
This information sheet looks at Japanese seafood imports and locations of forced and child labour.