“If this aspect is not taken into consideration, there is a risk of the wrong signals being sent to policy makers and consumers, and we become guilty of underestimating the impact Brazilian beef has on the climate,” says Sverker Molander, Professor Environmental Systems Analysis and one of the researchers responsible for the article.
In Brazil, beef production is the major cause of deforestation in the Amazon. The consequence is not only that valuable rainforest disappears – deforestation also adds to the greenhouse effect. When the carbon-rich forest is burned down to clear land for farming, large amounts of carbon dioxide are released. An estimated 60-70 per cent of the deforested land is used for cattle ranching.
Brazil has emerged as the largest beef exporter in the world over the course of the 2000s. However, very little of the exported beef comes from the deforested parts of the Amazon. In the international surveys performed to estimate a product’s impact on the environment – known as carbon footprint standards – this beef is calculated as causing zero emissions from deforestation, while causing regular emissions from the cattle’s digestion and feed production. Beef from deforested areas also only constitutes a small portion of total production, about six per cent.
“The snag is that this six per cent of beef production causes about 25 times more carbon dioxide emissions than beef produced in the rest of Brazil. This means that the average for carbon dioxide emissions caused by beef production in Brazil is twice as high as that in Europe,” says Sverker Molander.
The article in Environmental Science & Technology shows that growing export is a major driver behind increased production of beef in Brazil, which means it has indirectly contributed to an expansion of pasture in the Amazon. As it stands today, only land whose use is directly changed is included when estimating a product’s carbon footprint, which is misleading.
“We have calculated in many different ways in the article, and no matter how we do it, we arrive at the conclusion that Brazilian beef is a heavy producer of carbon dioxide.”
Carbon dioxide emissions in conjunction with deforestation are currently responsible for ten per cent of all emissions globally. Increasing demand for more feed, biofuel and food, primarily meat, creates a need for more farming land, which leads to deforestation and even greater emissions.
“The basic problem is that we are eating an increasing amount of meat. For every new kilogram we eat, the risk of deforestation increases,” says Christel Cederberg, one of the article’s co-authors and a researcher at both Chalmers and SIK.
The Brazilian Ministry of Agriculture has set a goal to double the country’s beef export over the next decade. At the same time, global demand for biodiesel and ethanol, which are produced from soy and sugar cane in the southern part of the country, is increasing. This has resulted in rising land prices. Many cattle ranchers sell their valuable grazing land to soy and sugar cane farmers, and then buy big land areas in the less expensive northern regions.
“By 2050, global meat consumption is expected to have increased by almost 80 per cent, which will require more grazing land and increased soy cultivation. Added to this is increased demand for land to produce bioenergy. Yields cannot just continue to increase. No matter from which angle you look at the forecasts, changed and increased land use is the result,” says Christel Cederberg.
More information: Sverker Molander, Professor Environmental Systems Analysis, Chalmers; firstname.lastname@example.org; +46 (0)31-772 21 69
Christel Cederberg, researcher at Chalmers and SIK, the Swedish Institute for Food and Biotechnology; email@example.com; +46 (0)708-71 03 74
Successful calculation of human and natural influence on cloud formation
04.11.2016 | Goethe-Universität Frankfurt am Main
Invasive Insects Cost the World Billions Per Year
04.10.2016 | University of Adelaide
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
07.12.2016 | Health and Medicine
07.12.2016 | Life Sciences
07.12.2016 | Health and Medicine