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Global biodiesel production grew by 23% per annum between 2005 and 2015, leading to a seven-fold expansion of the sector in a single decade. Rapid development in the biodiesel sector corresponded to high crude oil prices, but since mid-2014, oil prices have fallen dramatically. This paper assesses the economic and policy factors that underpinned the expansion of biodiesel, and examines the near-term prospects for biodiesel growth under conditions of low fossil fuel prices. We show that the dramatic increase in biodiesel output would not have occurred without strong policy directives, subsidies, and trade policies designed to support agricultural interests, rural economic development, energy security, and climate targets. Given the important role of policy—and the political context within each country that shapes policy objectives, instruments, and priorities—case studies of major biodiesel producing countries are presented as a key element of our analysis. Although the narrative of biodiesel policies in most countries conveys win-win outcomes across multiple objectives, the case studies show that support of particular constituents, such as farm lobbies or energy interests, often dominates policy action and generates large social costs. Looking out to 2020, the paper highlights risks to the biodiesel industry associated with ongoing regulatory and market uncertainties.

 

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Renewable and Sustainable Energy Reviews
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Rosamond L. Naylor
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An interview with authors of the “The Tropical Oil Crop Revolution” predicts the future of soy and palm oil booms by examining the past and present.

 

Used in everything from food to fuel, soybean and palm oil have seen production rates skyrocket in the past 20 years. Controversy surrounds the planting of oil crops – cultivated primarily in Southeast Asia and South America – as they are often grown on deforested lands and rely on large farmers and agribusiness rather than smallholders. “The Tropical Oil Crop Revolution: Food, Feed, Fuel, and Forests,” a new book co-authored by Stanford University researchers, examines the economic, social and environmental impacts of the oil crop revolution, and explores how to develop a more sustainable future.

Derek Byerlee, visiting fellow at Stanford’s Center on Food Security and the Environment (FSE), FSE Fellow Walter P. Falcon, and FSE Director Rosamond L. Naylor recently discussed some of their book’s key ideas.

Q: What are the key similarities and differences between the rise of oil crops and the 1965-85 green revolution?

A: From 1990 to 2010, world production of soybean grew by 220 percent and production of palm oil by 300 percent. Like the green revolution for cereal crops, this recent revolution involves two crops – oil palm and soybeans – that dramatically expanded shares in their respective crop subsector – oil crops.

The oil crop revolution differs from its predecessor, the green revolution of rice and wheat, in its mode of expansion. The green revolution embraced tens of millions of producers across many countries, especially where irrigation was available. The oil crop revolution was highly concentrated in a few countries and almost entirely in rainfed areas. Unlike the green revolution, which was spurred on by rapid yield gains, the force behind the oil crop revolution was expansion of crop area. 

Q: What are some ways to improve oil palm sustainability?

A: A lot of faith has been put on certification and private standards and commitments. However, without effective land and forest governance, it will be very difficult for the private sector to operate. The state at both national and local levels will need greatly improved and more transparent systems starting from land and forest tenure laws, information systems, civil service capacity and judicial and redress systems. 

Q: How will the future of oil crops differ from the past?

A: By 2050, we predict demand for oil crops to drop by as much as two-thirds. Demand for biofuel feedstocks cannot maintain the rapid pace of the past decade. Vegetable oils used for food will also grow more slowly. In Asia, population growth will slow and the effects of rising incomes will diminish as consumers in middle-income countries reach high levels of vegetable oil consumption.

The biggest wild card in terms of supply is land availability. Africa has the most land available, however access to clear property rights are often difficult due to “customary rights” to the land. Soybean, a new crop in much of Africa, will increase along with oil palm. We believe the area covered by oil crops does not have to expand greatly; rather, intensification of existing crop land and a modest expansion in area can meet demand. Steady progress is possible through genetic gains in yield. Sufficient degraded land is available for area expansion, provided land governance and incentive systems are developed to steer the expansion onto degraded lands.

Q: How has development of the biodiesel industry affected tropical vegetable oils in the past 25 years, and how will it shape the sector going forward?

A: Before the turn of the 21st century, few analysts predicted that biodiesel would play a major role in boosting global vegetable oil demand and prices. As it turns out, the expansion of biodiesel markets has been responsible for roughly half of the increase in vegetable oil consumption since 2013. Global biodiesel production more than doubled between 2007 and 2013. By some estimates, it could grow another 50 percent by 2025.

National energy policies continue to play a dominant role in the profitability of the biodiesel industry. The growing response of biofuel policies to low agricultural commodity prices is an important factor that is bound to keep biodiesel in the transportation fuel mix. This is true at least in countries that have strong interests oil crops, such as Indonesia, Malaysia, and Colombia in the case of oil palm, and the U.S., Brazil, and Argentina in the case of soybeans. Without policies mandating the use of biodiesel in fuel mixes, or incentivizing its use, the industry might fade away.

Q: What do you believe is the biggest takeaway from your research?

A: We are cautiously optimistic that the future expansion of the oil crop sector can be managed more sustainably. The predicted slowing of demand and land requirements will reduce pressure on native ecosystems. Several signs point to convergence among global consumers, private business, civil society, and local governments in finding ways to minimize the trade-offs between economic benefits and social and environmental costs.

 

Derek Byerlee, is an Adjunct Professor in the Global Human Development Program at Georgetown University and Editor-in-Chief of the Global Food Security journal. Walter P. Falcon is the Farnsworth Professor of International Agricultural Policy (Emeritus) at Stanford, senior fellow with the Freeman Spogli Institute for International Studies and the Stanford Woods Institute for the Environment. Rosamond L. Naylor is the William Wrigley Professor in Earth Science and Professor of Economics (by courtesy) and Gloria and Richard Kushel Director, at the Center on Food Security and the Environment Stanford.

 

 

 

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Recent reviews of dietary intake data from Benin showed that recommended daily intakes of key micronutrients, such as vitamin A and Fe, were not met( – ). At the sub-national level, in northern Benin, macronutrient intakes are also too low( ). Lack of dietary diversity is a particularly severe problem in Benin where diets are based predominantly on starchy staples with little or no animal products and few fresh fruits and vegetables( ). According to the last Demographic and Health Survey (DHS) carried out in 2012, only 28 % of rural children satisfied the minimum diversity criterion of eating at least four out of seven food groups and 14 % consumed the minimum acceptable diet. In addition, the prevalence of stunting, wasting and underweight was respectively 40, 5 and 19 % among children aged 6–59 months, while 9 % of rural women had chronic energy deficiency (BMI<18·5 kg/m2)( ). To improve the nutrition situation of women and children in Benin, the Ministry of Health has undertaken several interventions through its Strategic Plan for Food and Nutrition Development, comprising the supplementation of three major nutrients (vitamin A, Fe and iodine) and other promotive activities, such as exclusive breast-feeding, appropriate complementary feeding, and improved maternal and child nutrition( ).

Despite the efforts of the line ministry and its stakeholders, Beninese women aged 15–49 years (41 %) and children aged 6–59 months (58 %) are significantly affected by anaemia with greater prevalence in rural areas( ). Other nutritional data, such as Fe and vitamin A status, however, were not documented in the Benin 2012 DHS. In the 2006 Benin DHS, vitamin A deficiency (VAD) as measured by serum retinol <20 μg/dl was estimated to affect 66·0 % of children aged 12–71 months while the prevalence of night blindness was 11·8 % among pregnant women( ). The few studies of micronutrient deficiencies among rural populations were conducted in specific localized groups and revealed greater prevalence rates of VAD among 12–71 month-old children (82 %) and pregnant women (14 %) in northern Benin( ), while 33–49 % of children under 5 years of age were Fe deficient( 10 ). Until now, to our knowledge, there have been no population-based studies permitting generalization about the epidemiology of anaemia and its principal determinants in non-pregnant women, despite the problem being among the top ten causes of morbidities in the country( 11 12 ). The only study that identified anaemia risk factors among Beninese children was carried out in 2007 and found that incomplete immunization, stunted growth, recent infection, absence of a bednet, low household living standard, low maternal education and low community development index increased the risk of anaemia( 13 ).

As such, identifying the magnitude of anaemia and deficiencies of Fe and vitamin A and their determinants in high-risk groups, such as women of childbearing age and children, is essential for evidence-based intervention modalities, particularly in rural areas, where women and children may suffer not only from micronutrient deficiencies but also a shortage of food( 14 ). The present study is a very important step forward to avail of evidence-based information on the distribution of anaemia and micronutrient deficits and their predisposing diet and health factors among rural women and children in northern Benin. It will help understand the contemporary health profile of the rural populations of the study area in terms of dietary, socio-economic and environmental factors.

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Public Health Nutrition
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Jennifer Burney
Rosamond L. Naylor
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Temperature data are commonly used to estimate the sensitivity of many societally relevant outcomes, including crop yields, mortality, and economic output, to ongoing climate changes. In many tropical regions, however, temperature measures are often very sparse and unreliable, limiting our ability to understand climate change impacts. Here we evaluate satellite measures of near-surface temperature (Ts) as an alternative to traditional air temperatures (Ta) from weather stations, and in particular their ability to replace Ta in econometric estimation of climate response functions. We show that for maize yields in Africa and the United States, and for economic output in the United States, regressions that use Ts produce very similar results to those using Ta, despite the fact that daily correlation between the two temperature measures is often low. Moreover, for regions such as Africa with poor station coverage, we find that models with Ts outperform models with Ta, as measured by both R 2 values and out-of-sample prediction error. The results indicate that Ts can be used to study climate impacts in areas with limited station data, and should enable faster progress in assessing risks and adaptation needs in these regions.

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Environmental Research Letters
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Sam Heft-Neal
David Lobell
Marshall Burke
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Joann de Zegher is one of nine selected as a SAWIT Challenge Finalist. She will be pitching her sustainable palm oil solution in Jakarta, Indonesia November 17-18, 2016.

FSE is excited to announce that graduate student, Joann de Zegher, is one of the nine innovators chosen in the SAWIT Challenge to pitch her solution to help independent smallholder farmers produce palm oil sustainably. She will present her idea to international businesses, government, and NGO leaders in Jakarta, Indonesia November 17-18, 2016.

The nine finalists submitted their ideas to solve the biggest challenges facing independent smallholder palm oil farmers in Indonesia: financing, farming inputs and best practices, mapping and land tenureship, market information, as well as product traceability and transparency. The innovations are designed to make sustainable, more profitable palm oil production.

The SAWIT Challenge is run by Smallholders Advancing with Technology and Innovation (SAWIT), a partnership between the Oil Palm Smallholders Union, and the Indonesia Business Council for Sustainable Development, with support from the U.S. Agency for International Development.

De Zegher’s solution offers a substantial price incentive to smallholder farmers who comply with buyer sustainability policies, but only passes on a very small portion of the cost to buyers. The innovation leverages the simple fact that small farmers and large buyers have substantially different cash flow needs. It also helps to shorten and strengthen the palm supply chain from smallholder farmers to mill.

 

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David Little Professor of Aquatic Resources and Development at the University of Stirling University of Stirling
Ronald Hardy Director, Aquaculture Research Institute and Professor at the University of Idaho University of Idaho
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Fishing practices that use gear that is dragged on the seafloor, such as bottom trawling, destroy and degrade marine habitats on continental shelves, the most productive areas of the global ocean. However, there has been little assessment of the outcomes of trawling restrictions, impeding progress towards solutions. This project will use ecological and economic models to examine the potential outcomes of a large-scale trawling ban in the Mediterranean Sea and will assess any implications for marine ecosystem function and services.

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The response of tropical forests to droughts is highly uncertain. During the dry season, canopy photosynthesis of some tropical forests can decline, whereas in others it can be maintained at the same or a higher level than during the wet season. However, it remains uncertain to what extent water availability is responsible for productivity declines of tropical forests during the dry season. Here we use global satellite observations of two independent measures of vegetation photosynthetic properties (enhanced vegetation index from 2002 to 2012 and solar-induced chlorophyll fluorescence from 2007 to 2012) to investigate links between hydroclimate and tropical forest productivity. We find that above an annual rainfall threshold of approximately 2,000 mm yr−1, the evergreen state is sustained during the dry season in tropical rainforests worldwide, whereas below that threshold, this is not the case. Through a water-budget analysis of precipitation, potential evapotranspiration and satellite measurements of water storage change, we demonstrate that this threshold determines whether the supply of seasonally redistributed subsurface water storage from the wet season can satisfy plant water demands in the subsequent dry season. We conclude that water availability exerts a first-order control on vegetation seasonality in tropical forests globally. Our framework can also help identify where tropical forests may be vulnerable or resilient to future hydroclimatic changes.

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In a new study in the journal BioScience, a team of researchers including Stanford professor Roz Naylor links marijuana cultivation to widespread environmental damage in California and calls for greater regulation of the crop’s impact on natural ecosystems.

Recent debates about marijuana legalization have focused on the potential social, health and economic impacts, with little attention paid to environmental issues. The new study, spearheaded by the California chapter of The Nature Conservancy, brings environmental concerns to the forefront of the policy discussion. Between 60 and 70 percent of the marijuana consumed in the United States comes from California.
 

Water and wildlife

Marijuana plants require nearly twice as much water as do grapes or tomatoes, and the last five years have brought a 50 to 100 percent increase in the amount of northern California watershed lands used for marijuana production – figures that are causing growing concern among conservationists in the midst of a severe statewide drought.

The majority of California agriculture is subject to heavy water use regulations. Farmers of most irrigated crops help their plants through the dry summer months by filling water tanks in the winter, when streams and springs are full.

By contrast, many marijuana growers draw surface water during the plant’s summer growing season, when drought conditions are worst.

“Taking water directly from rivers and streams in the summer not only reduces the water available for agriculture but also threatens wildlife species, especially birds and fish, that depend on these wetland ecosystems for survival,” said Naylor.

Illegal marijuana plantations in California are associated with a wide range of other environmental impacts, including pollution, poaching, and pesticides that poison wildlife. Even legal outdoor cultivation can cause deforestation and soil erosion.
 

Policy options

The research team identified several opportunities to reduce the environmental impacts of marijuana cultivation in California. For example, states can:

  • Offer incentives for growers to protect natural resources
  • Enforce new or existing environmental laws,
  • Use sales tax revenues to fund restoration projects
  • Implement certification or labeling programs to encourage consumers to buy sustainably grown products.

“Regardless of the legal status of marijuana, the way we are currently managing its impacts on water and wildlife in California just doesn’t work,” said Naylor. “Bringing these impacts into future policy discussions about marijuana is critical for protecting California’s environmental resources given the high value and demand for the crop.”

Naylor is William Wrigley Professor of Earth Science at Stanford, director of the Center on Food Security and the Environment, and a senior fellow at the Stanford Woods Institute for the Environment and the Freeman Spogli Institute for International Studies. She serves as a trustee of The Nature Conservancy California Chapter.


Media Contact

Laura Seaman, Communications Manager, Center on Food Security and the Environment: lseaman@stanford.edu 
Lisa Park, Media Relations, The Nature Conservancy: lpark@tnc.org.

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