Showing results for: Journal article
In two experiments where participants were asked to choose between hypothetical canteen meals, “traffic light labelling” (red, amber or green labels) of different meal options was found to shift meal choices towards those lower in carbon emissions and calorie content.
This paper assesses the agricultural water use efficiency of different food types based on their nutrient content, instead of the conventional approach of assessing water use in terms of litres used to produce a certain weight of food. The purpose of the study is to determine whether higher intakes of nutrient-rich foods such as fruit, vegetables and seeds might conflict with the aim of minimising agriculture’s water use.
FCRN member Christian Reynolds uses linear programming to calculate diets that meet both health and greenhouse gas emission criteria while being affordable for different income groups in the UK. Generally, the optimised diets are higher in plant-based foods than diets consumed in the UK in 2013, although seafood is higher in the optimised diet than in 2013 diets.
In this paper, FCRN members Christian Reynolds and Tom Quested review the effectiveness of different consumption-stage measures to reduce food waste. Examples of successful interventions include serving food on smaller plates (which can reduce food waste by up to 57%) and changing school nutritional guidelines (which reduced waste of vegetables by 28% because fewer students selected vegetables and those who did select vegetables ate more of them).
In this research on the Brazilian Amazon, FCRN member Erasmus zu Ermgassen of UCLouvain finds that forest conservation and agricultural growth are not mutually exclusive, and sheds new light on the land sparing/sharing debate. The authors argue that enforcement of Brazil's forest laws is key to encouraging the efficient use of land and the sustainable development of the agricultural sector.
This paper uses climate models to estimate that average precipitation across many crop production areas will change by more than natural variability throughout the 21st century. Changes are seen even if emissions are relatively low, but meeting the Paris climate goals could reduce the extent of cropland that is affected.
FCRN member Alexandra Sexton describes the narratives and counter-narratives that have been used to talk about alternatives such as cultured meat and plant-based meat replacements.
In this paper, FCRN member Nicholas Bowles of the University of Melbourne reviews existing data on the environmental impacts of the livestock sector and considers these impacts in the context of planetary boundaries. The paper reports that efficiency alone is unlikely to be adequate to shrink livestock’s impacts to a sustainable level, and that dietary shifts will also be necessary.
This study surveys declining pollinator populations and the threat to agricultural production this poses at a time when (the paper argues) higher yields and farm efficiencies are needed. It outlines how woody habitats such as trees and hedgerows can be used on agricultural land to aid conservation of pollinators.
This paper analyses how different agriculture and forestry activities affect biodiversity and carbon sequestration. In 2011, the top driver of losses to bird species richness was cattle production, while the greatest driver of losses to net carbon sequestration (relative to sequestration if natural vegetation were allowed to grow) was forestry.
This paper retrospectively models the impacts of ocean warming on the productivity of 235 fish populations around the world representing around one third of reported global catch. It uses a temperature-dependent population model to estimate that the overall maximum sustainable yield of the fish populations dropped by 4.1% between 1930 and 2010.
This paper models the impacts that the Paris Agreement on climate change would have on seafood production. It finds that three quarters of maritime countries would benefit from the Agreement’s implementation.
Research literature, policy indicators, and assessment tools use many different variables to assess sustainable agricultural land systems in Europe (for example soil loss, landscape diversity and food quality). Out of 239 of these variables identified in this paper, 32 have been covered by all three perspectives (i.e. research, policy and practice) while the remainder have only been considered by one or two perspectives.
This study analyses case studies of agri-food system innovation in different socio-economic, cultural, and political environments (Brazil, New York and Senegal) to determine common factors that help grassroots projects scale up successfully.
Climate mitigation policies rarely account for the time lags associated with land-based greenhouse gas mitigation policies such as reforestation, bioenergy with carbon capture and storage (BECCS) or reduction of agricultural emissions, argues this paper, making it unlikely that commitments under the Paris Agreement will be met.
This paper uses long-term studies from Europe and China to examine the effects on soil quality of organic matter addition, no-till practices, crop rotation and organic farming. It finds that yields are lower under no-till and organic practices, but that these practices are associated with higher soil organic matter.
This paper, by John Lynch of the University of Oxford’s LEAP project, finds that carbon footprint studies of beef cattle typically do not report separate values for emissions of different greenhouse gases such as methane and nitrous oxide. Instead, studies generally report only an aggregated figure in the form of the 100-year Global Warming Potential (GWP100) as CO2-equivalent.