Showing results for: Aquaculture
This paper, co-authored by FCRN member David Little, sets out four scenarios for the global future of aquaculture - food sovereignty, blue internationalism, aqua-nationalism and aquatic chicken - and discusses how each scenario could affect human wellbeing and environmental health.
In this paper, FCRN member Michael MacLeod reports that global aquaculture produced around 0.49% of global greenhouse gas emissions in 2017 - a similar quantity to the emissions from sheep meat production. When emissions are measured per kg of edible product, the paper finds aquaculture to have low emissions intensity relative to meat from goats, cattle, buffalo and sheep and similar emissions intensity to meat from pigs and chickens.
This article by FoodPrint discusses the tension between the purported environmental benefits of kelp farming and consumers’ lack of familiarity with kelp as a food, and describes “regenerative” kelp farming systems that also produce oysters, clams and mussels. It sets out several ways in which kelp can be used, including in foods such as pesto or lasagne, as well as other uses such as bioplastics, fertiliser, biofuel and animal feed.
In this paper, FCRN member David Willer argues that bivalve shellfish aquaculture could provide a nutritious and low-impact source of protein to nearly one billion people, particularly in the tropics.
This report from UK food waste NGO Feedback argues that sustainability certification of wild-caught forage fish as feed for Scottish salmon aquaculture companies could in fact be driving overfishing.
This report from UK food waste NGO Feedback uses the Scottish salmon aquaculture sector as an example to argue that feeding wild fish to farmed salmon is an inefficient and environmentally damaging way of providing micronutrients to humans. It suggests that replacing some farmed salmon consumption with small wild-caught fish and farmed mussels could provide the same level of micronutrients while protecting fish stocks.
This research shows that global replacement of fish meal and fish oil in aquaculture feed with alternative feeds (including algae, bacteria, yeast and insects) could reduce aquaculture’s demand for forage fish while - depending on the specific mix of alternative feeds - maintaining feed efficiency and levels of omega 3 fatty acids in the farmed fish.
This report from UK food waste NGO Feedback and the Changing Markets Foundation assesses ten UK supermarkets on their aquaculture supply chain policies and practices, particularly regarding the use of wild fish as feed for farmed fish. Seven out of ten supermarkets scored less than 30%, with ALDI performing worst at 12% and Tesco performing best at 60%. The report finds that aquaculture operations for UK supermarkets consumed 2.5 times as much wild fish as the amount of farmed fish produced.
This commentary article sets out five priorities for developing the so-called “blue economy” (i.e. ocean-based activities such as fishing, aquaculture, tourism, seabed mining and shipping) in a way that is both environmentally sustainable and socially equitable. The article notes that human activities are already negatively affecting ocean ecosystems and that future economic development of the oceans may have further, sometimes poorly understood, impacts on both the environment and people.
This interactive feature from the Global Reporting Program, an investigative journalism organisation, uses text, images and video to explore the fishmeal supply chain, including its sources, its uses in aquaculture, overfishing, waste sludge from fishmeal factories and competition between industrial fishmeal producers and small-scale fish processors.
This report by UK food waste campaigning organisation Feedback examines the use of wild fish and land by the Scottish farmed salmon industry. It finds that the industry, which is largely controlled by six companies, already uses the same amount of wild fish that the whole UK population purchases, and that it would need to use two-thirds as much again to meet its growth ambitions.
This report from US charity The Nature Conservancy explores how private investors can help to meet the demand for sustainable seafood by investing in new forms of aquaculture that have lower negative environmental impacts than conventional aquaculture.
This report from the US-based campaigning organisation Changing Markets Foundation examines the impacts of catching wild fish to feed to farmed fish in aquaculture operations, i.e. reduction fisheries.
This paper quantifies the resource use implications of replacing fishmeal with plant-based ingredients in the feed used to farm shrimp. It finds that increasing the proportion of plant-based ingredients in shrimp feed could reduce pressure on marine resources, at the cost of increased use of freshwater, land and fertiliser.
This book, edited by Mette Vaarst and Stephen Roderick, reviews key challenges and solutions in improving the health and welfare of organic farm animals, including case studies from organic farming of dairy and beef cattle, sheep and goats, pig and poultry.
Aquaculture generally supplements wild fisheries rather than replacing them, according to this paper, which used models based on historical data.