beer drinkers are facing hard times: The barley juice could in the future be in short supply worldwide and this drastically increase the price. This is an international group of researchers predicts the direction of the biologist Wei Xie of the University of Beijing in a study published in the journal “Nature Plants”.

the cause of the Malaise of climate change, the droughts with extended and more frequent heat waves. “Beer is the most popular alcoholic beverage in the world,” write the researchers. “Its main ingredient, barley is particularly sensitive to extreme weather events.” Although many climate models, an increase of such a Disaster, whose intensity also increases, had never been investigated, how this will affect the beer supply .

declines in Harvest due to extreme events

holten, Xie and his colleagues now. On the basis of Simulation calculations, you determined how such an Extreme influence on the Crops, and thus the production of beer. The result: Depending on the duration and severity of extreme events yields in the major beer Nations of Germany, Belgium and the Czech Republic will be reduced by 27 to 38 per cent by the end of the century. In the global average, the decline is three to 17 per cent.

The generated quantity of Beer decreases, but at a disproportionate rate. Because of a shortage of the barley will be used preferably as animal feed or for the production of food instead of luxury goods such as beer, argue the authors of the study.

According to the beer prices are on the rise in the train of global warming. According to the investigation the regional culture and the economic Status of a country play a role. Particularly, Ireland is affected. That is where the juice of the Barley, could increase the price up to 2099 43, or in the worst case, even a 338 percent.

decline in beer consumption by 16 percent

The trade in malting barley may not offset the losses from a global perspective. Although countries some countries, including the United States can increase the harvest quantities. But this is not enough to compensate for the decline in countries such as Belgium, China, and Japan, heavily dependent on imports.

All of this will force in the worst case – if the weather is extreme increase very strong – a drastic decline in beer consumption, a forecast of Lie and his colleagues – and the world at 16 percent. This corresponds to the consumption in the United States at the beginning of the decade. In China, where the volume of most of the juice of the Barley from the Taps, cans and bottles flowing, are 8.9 per cent less juice of the Barley – or 4,34 billion liters.

you can Also use the beer taste could change

in Australia, the inquiry encouraged further adversity to light. If, as a result of global warming droughts will increase, and the barley in water-scarce, suffers, can grains the chemical composition of the starch changes in the grain. In larger starch granules and more proteins. “Every brewer will tell you that the strength and quality affect the brewing process and the taste of the beer,” says study author Peter Gous of the University of Queensland in Brisbane. “Changes in the thickness can increase the manufacturing costs.” Perhaps a newly bred drought-creates-resistant barley, which contains genes from sorghum. It promises to be a constant quality of the starch.

The climate change also affects the hops as the main flavor in the beer. It thrives best in a temperate climate. Accordingly, conditions such as prolonged drought, heat or hail quickly harvest losses and quality losses are to be expected in the case of extreme weather. In addition, the hop cultivation is concentrated mainly on one Region: About 30 percent of the global production comes from the North of Munich to the nearby Hallertau region.

according to One study, the experts of the Berlin-based think tank adelphi, presented last year at the “Beeronomics conference” in Copenhagen, declined in the past 15 years, due to the more frequent summer heat and periods of drought, increasingly, income. In the year of 2014, about which the farmers drove 26 percent less hops in their barns than in the previous year.

In the Hallertau, 20 percent of the fields are irrigated

From the in the future, more frequent weather extremes will be affected areas, according to adelphi by other crop. The result is a shortage, as well as the quality of the services, increase the cost of the hops and the beer ultimately. Although the hops farmers with drought-develop more resistant varieties in the Hallertau, in the meantime, 20 percent of fields are irrigated. However, these measures should be reflected in the prices.

another factor is the production of biofuels in Europe, the fossil fuels are added to the mix. The necessary energy plants such as rapeseed or Corn are subsidized. Many grain farmers initiated the cultivation of barley with your change of income are liable, in favour of these crops, which reduced the already scarce supply.

In Belgium, the climate change brings the famous Lambic beer is in danger. It Pajottenland is in the Region of home and is produced by spontaneous fermentation by yeasts, which come from the air in the Sud. After Boiling it is cooled in open vats, then in oak or chestnut casks.

farmers will be able to receive traditional production barely maintained

This brewing process works only when temperatures are between minus and plus eight degrees Celsius. This means that you can’t produce the Lambic at all times of the year. Traditionally, the brewers therefore use the time between October to April when the temperatures are in the required range. As the Brussels brewery Cantillon reported that shortened the window of time in which brewed can be, due to the warming of 165 days in the early 20th century. Century to the current level of 140 days.

The Breweries fear that this window closes. What can happen in the extreme case, experienced Cantillon 2015: After Braubeginn in the spring it was so hot that the fermentation had to be stopped. In this time produced Lambic-Sud landed in the sink. Similar happened in the heat wave of 2003. At that time, the Belgians had to destroy 6000 litres.

its traditional production, the brewer is difficult. One possibility would be the wort artificially cool. But Cantillon chief Jean Van Roy is strictly opposed to. “Maybe we’ll do that in 30 or 40 years, when we have no other Option,” he explains in the Blog “the Brussels Beer City”. “But not as long as the cooling system works in a natural way – even if we would then have to brew on the weekends.” Otherwise, says Van Roy, will suffer the taste of the beer. If necessary, the Brauerlei would be moved to more Northern and thus cooler climes, such as in Denmark or Sweden.

of Course, these are small problems in comparison with other imminent effects of global warming. The researchers refer to the Beijing biologists Xie in their work. Nevertheless, the intercultural appreciation of beer is something fundamental. For thousands of years there had been at social gatherings and celebrations played an important role. Although you could argue that a decrease in Consumption affecting the health of the. But undoubtedly, millions of people worldwide would feel the negative consequences of climate change for the barley juice as an impairment of their quality of life.

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