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Former PhD student, Emmett Interdisciplinary Program in Environment & Resources
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Andy earned his doctorate in the Emmett Interdisciplinary Program in Environment and Resources at Stanford University where he studied the Chilean salmon farming industry to understand human relationships with marine environments. He is in the process of writing an environmental and social history of the industry.

Before coming to Stanford, he researched aquaculture policy with Dr. Becky Goldburg at The Environmental Defense Fund; instructed in and administered marine science education programs at the Catalina Island Marine Institute; and worked for the National Marine Fisheries Service in the Alaskan pollock and California drift-gillnet swordfish fisheries.

Previously he attended the Colorado College as a Boettcher scholar to study environmental science, history and literature. His interest in environmental studies largely coalesced during a year spent teaching at Uthongathi School in Kwa-Zulu Natal, South Africa.

Most reduction fisheries that produce fishmeal and fish oil have already reached or exceeded sustainable catch levels and will be placed under further pressure as the aquaculture industry grows. At the same time that research into alternative sources of nutrition for piscivorous aquaculture species is progressing, several laws and regulations are taking shape that address the issue of aquaculture feed practices, including the U.S. National Offshore Aquaculture Act (H.R. 2010, S. 1609), the California Sustainable Oceans Act (SB 201), and the development of organic aquaculture standards by the National Organic Standards Board (NOSB). Other nations with expanding aquaculture industries are also beginning to take notice of this issue and are investigating alternative feed sources.

At this pivotal time, the Stanford meeting will bring together a small group of forward-thinking researchers, environmental non-profits, aquaculture producers, feed developers, and others who are striving toward sustainable feed solutions. The goal is to develop recommendations and a guiding direction for achieving sustainable feed inputs, incorporating current science, economics, and policy. The meeting seeks to:

  • Analyze current and future feed demands in the marine aquaculture sector. What percentage of fishmeal and fish oil inclusion is typical in feeds, and how much can that percentage be reduced?
  • Assess the role of conventional fishmeal and fish oil and alternative sources of nutrition, such as krill, algae, other microbes, terrestrial plants, by-catch, and seafood and poultry processing wastes, both now and in the future. What are the prospects for continued use of wild-caught fish and how can these conventional feed sources be used more responsibly? What are the environmental impacts of each of the resources? What is the state of scientific knowledge, development, and availability of alternatives? How will market dynamics impact the transition from fishmeal and fish oil to alternative proteins and oils?
  • Identify research needs and areas of high promise. Discuss how to encourage the research, development, and use of sustainable, alternative feed ingredients in aquaculture.

We hope the meeting will facilitate the cross-fertilization of ideas on sustainable feeds from people in different sectors and begin to provide some clarity and direction useful to policymakers. Although many experts have acknowledged the problem of increasing feed demands, and while alternative feed sources are a growing research field, there are few specific recommendations on how to achieve sustainable feed inputs. From the discussion at this workshop, we intend to produce specific recommendations to guide legislation and regulation on feeds, with the goal of improving the sustainability of aquaculture feed practices.

FSE - Stanford University

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The use of chemical fertilizers in developing countries made possible the Green Revolution, and as a result many regions once visited by periodic famines are now food self-sufficient. However, there is a growing recognition that the injudicious use of chemical fertilizers may have adverse environmental consequences including toxic algal blooms and damage to productive ocean fisheries.

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Ashley M. Dean
Rosamond L. Naylor
Rosamond Naylor
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This past autumn the Freeman Spogli Institute for International Studies (FSI) in conjunction with the Woods Institute for the Environment launched a program on Food Security and the Environment (FSE) to address the deficit in academia and, on a larger scale, the global dialogue surrounding the critical issues of food security, poverty, and environmental degradation.

"Hunger is the silent killer and moral outrage of our time; however, there are few university programs in the United States designed to study and solve the problem of global food insecurity," states program director Rosamond L. Naylor. "FSE's dual affiliation with FSI and the new Stanford Institute for the Environment position it well to make significant steps in this area."

Through a focused research portfolio and an interdisciplinary team of scholars led by Naylor and CESP (Center for Environmental Science and Policy) co-director Walter P. Falcon, FSE aims to design new approaches to solve these persistent and under-prioritized problems, expand higher education on food security and the environment at Stanford, and provide direct policy outreach.

Productive food systems and their environmental consequences are at the core of the program. While many of these systems are global in character, but they are influenced significantly by differing food objectives, income level, and instruments among nations. The program thus seeks to understand the food security issues that are of paramount interest to poor countries, the food diversification challenges that are a focus of middle-income nations, and the food safety and subsidy concerns prominent in richer nations.

Chronic hunger in a time of prosperity

Although the world's supply of basic foods has doubled over the past century, roughly 850 million people (12 percent of the world's population) suffer from chronic hunger. Food insecurity deaths during the past 20 years outnumber war deaths by a factor of at least 5 to 1. Food insecurity is particularly widespread in agricultural regions where resource scarcity and environmental degradation constrain productivity and income growth.

FSE is currently assessing the impacts of climate variability on food security in Asian rice economies. This ongoing project combines the expertise of atmospheric scientists, agricultural economists, and policy analysts to understand and mitigate the adverse effects of El Niño-related climate variability on rice production and food security under current and future global warming conditions. As a consequence of Falcon and Naylor's long-standing roles as policy advisors in Indonesia, models developed through this project have already been embedded into analytical units within Indonesia's Ministry of Agriculture, the Planning Ministry, and the Ministry of Finance.

"With such forecasts in hand, the relevant government agencies are much better equipped to mitigate the negative consequences of El Niño events on incomes and food security in the Indonesian countryside," explain Falcon and Naylor.

Food diversification and intensification

With rapid income growth, urbanization, and population growth in developing economies, priorities shift from food security to the diversification of agricultural production and consumption. "Meat production is projected to double by 2020" states Harold A. Mooney, CESP senior fellow and an author of the Millennium Ecosystem Assessment. "In China alone, meat consumption has more than doubled in the past generation." As a result, land once used to provide grains for humans now provides feed for hogs and poultry.

These trends will have major consequences on the global environment-affecting the quality of the atmosphere, water, and soil due to nutrient overloads; impacting marine fisheries both locally and globally through fish meal use; and threatening human health, as, for example, through excessive use of antibiotics.

An FSE project is looking at these trends as it relates to intensive livestock production and assessing the environmental impacts to gain a better understanding of the true costs of this resource-intensive system. A product of this work recently appeared as a Policy Forum piece in the December 9, 2005, issue of Science titled "Losing the Links Between Livestock and Land".

Numerous factors have contributed to the global growth of livestock systems, lead author Naylor notes, including declining feed-grain prices, relatively inexpensive transportation costs, and trade liberalization. "But many of the true costs remain largely unaccounted for," she says. Those costs include destruction of forests and grasslands to provide farmland for corn, soybeans, and other feed crops destined not directly for humans but for livestock; utilization of large quantities of freshwater; and nitrogen losses from croplands and animal manure.

Naylor and her research team are seeking better ways to track all costs of livestock production, especially the hidden ones related to ecosystem degradation and destruction. "What is needed is a re-coupling of crop and livestock systems," Naylor says. "If not physically, then through pricing and other policy mechanisms that reflect social costs of resource use and ecological abuse."

Such policies "should not significantly compromise the improving diets of developing countries, nor should they prohibit trade," Naylor adds. Instead, they should "focus on regulatory and incentive-based tools to encourage livestock and feed producers to internalize pollution costs, minimize nutrient run-off, and pay the true price of water."

Looking ahead

The future of the program on Food Security and the Environment looks bright, busy, and expansive. While a varied portfolio of projects is in line for the upcoming year, a strong emphasis remains in the area of food security. Building on existing research at Stanford, researchers are identifying avenues for enhancing orphan crop production in the world's least developed countries-crops with little international trade and investment, but with high local value in terms of food and nutrition security. The work seeks to identify advanced genetic and genomic strategies, along with natural resource management strategies, to improve orphan crop yields and stability, enhance crop diversity, and increase rural incomes through orphan crop production.

Another priority area of research centers on the development of biofuels. Biofuels are becoming increasingly a part of the policy set for world food and agriculture. As countries such as the United States seek energy self-reliance and look for alternatives to food and feed subsidies under WTO (World Trade Organization) rules, the conversion of corn, sugar, and soybeans to ethanol and other energy sources becomes more attractive. New extraction methods are making the technology more efficient, and crude oil prices at $60 per barrel are fundamentally changing the economics of biomass energy conversion. A large switch by key export food and feed suppliers, such as the United States and Brazil, to biofuels could fundamentally alter export prices, and hence the world food and feed situation. A team of FSE researchers will assess the true costs of these conversions.

The FSE program recently received a grant through the Presidential Fund for Innovation in International Studies to initiate new interdisciplinary research activities. One such project links ongoing research at Stanford on the environmental and resource costs of industrial livestock production and trade to assess the extent and rate of Brazil's rainforest destruction for soybean production. "Tens of millions of hectares of native grassland and rainforest are currently being cleared for soybean production to supply the global industrial livestock sector," says Naylor. A significant share of Brazil's soybeans is being shipped to China, where rapid income growth is fueling tremendous increases in meat consumption."

A team of remote-sensing experts, ecologists, agronomists, and economists will be looking at the ecological effects on the landscape through biogeochemical changes and biodiversity loss, the impacts of land clearing on the regional hydrologic cycle and climate change, the economic patterns of trade, and the role of policies to achieve an appropriate balance between agricultural commodity trade, production practices, and conservation in Brazil's rainforest states.

"I'm extremely pleased to see the rapid growth of FSE and am encouraged by the recent support provided through the Presidential Fund for Innovation in International Studies," states Naylor. "It enables the program to engage faculty members from economics, political science, biology, civil and environmental engineering, earth sciences, and medicine-as well as graduate students throughout the university-in a set of collaborative research activities that could significantly improve human well-being and the quality of the environment."

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If aquaculture is to play a responsible role in the future of seafood here at home, we must ensure that the "blue revolution" in ocean fish farming does not cause harm to the oceans and the marine life they support. The ratio of wild fisheries inputs to farmed fish output has fallen to 0.63 for the aquaculture sector as a whole but remains as high as 5.0 for Atlantic salmon.

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With continued human pressure on marine fisheries and ocean resources,

aquaculture has become one of the most promising avenues for increasing

marine fish production in the future. This review presents recent trends and future

prospects for the aquaculture industry, with particular attention paid to ocean farming

and carnivorous finfish species. The benefits of farming carnivorous fish have been

challenged; extensive research on salmon has shown that farming such fish can have

negative ecological, social, and health impacts on areas and parties vastly separated in

space. Similar research is only beginning for the new carnivorous species farmed or

ranched in marine environments, such as cod, halibut, and bluefin tuna. These fish have

large market potential and are likely to play a defining role in the future direction of the

aquaculture industry.We review the available literature on aquaculture development of

carnivorous finfish species and assess its potential to relieve human pressure on marine

fisheries, many of which have experienced sharp declines.

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Annual Review of Environment and Resources
Authors
Rosamond L. Naylor
Rosamond L. Naylor
Marshall Burke
Marshall Burke
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BioScience
Authors
Rosamond L. Naylor
Rosamond L. Naylor
Kjetil Hindar
Ian A. Fleming
Rebecca Goldberg
Susan Williams
John Volpe
Fred Whoriskey
Josh Eagle
Dennis Kelso
Marc Mangel
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The depletion of many marine fisheries has created a new impetus to expand seafood production through fish farming, or aquaculture. Marine aquaculture, especially of salmon and shrimp, has grown considerably in the past two decades, and aquaculturists are also beginning to farm other marine species. Production data for salmon and shrimp indicate that farming supplements, rather than substitutes for fishing. Since most farmed marine fish are carnivores, farming them relies on the capture of finite supplies of wild fish for use in fish feeds. As aquaculture is not substituting for wild fisheries, heavy dependence on wild fish inputs is a concern as marine aquaculture grows. Other likely impacts include escapes of farmed fish and large-scale waste discharges from fish farms. A viable future for marine ecosystems will require incorporation of ecological perspectives into polices that integrate fishing, aquaculture, and conservation.

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Frontiers in Ecology and the Environment
Authors
Rebecca Goldburg
Rosamond L. Naylor
Rosamond L. Naylor
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