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Home Coffee News

How climate change affects Colombia’s coffee production

by Ethan Miller
April 6, 2021
in Coffee News
Reading Time: 4 mins read
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climate change Colombia coffee production
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Climate change poses new challenges to coffee production in Colombia, as it does to agricultural production anywhere in the world. However, a new University of Illinois study shows effects vary widely depending on where the coffee beans grow.

“Colombia is a large country with a very distinct geography. The Andes Mountains cross the country from its southwest to northeast corner. Colombian coffee is currently growing in areas with different altitude levels, and climate impacts will likely be very different for low altitude and high-altitude regions,” says Sandy Dall’Erba, Professor in the Department of Agricultural and Consumer Economics (ACE) and Director of the Regional Economics Applications Laboratory (REAL) at University of Illinois. Dall’Erba is co-author on the study, published in Agricultural Systems.

Other studies on the future of coffee production have either considered the country as a whole or focused on a few areas within the country.

Dall’Erba and lead author Federico Ceballos-Sierra, who recently obtained a PhD from ACE, look at climate and coffee production for the entire country, broken down into 521 municipalities. This high level of detailed information allows them to identify significant regional variations.

“Colombia is not going to experience reduced productivity overall. But when we look into the impact across municipalities, we see many differences that get lost in the national average. That has important implications for coffee growers who live in one municipality versus another,” Ceballos-Sierra says.

“Low-altitude municipalities will be negatively affected by climate change, and thousands of growers and their families in these areas will see their livelihood jeopardised because productivity is likely to fall below their breakeven point by mid-century.”

The researchers analysed climate data from 2007 to 2013 across Colombia’s 521 coffee-producing municipalities and evaluated how temperature and precipitation affect coffee yield. Subsequently, they model anticipated weather conditions from 2042 to 2061 and future coffee production for each municipal area.

At the national level, they estimate productivity will increase 7.6% by 2061. But this forecast covers a wide margin of spatial differences, ranging from a 16% increase in high altitude regions (1500 metres or 5000 feet above sea level) to a 8.1% decrease in low altitude regions. Rising temperatures will benefit areas that are now marginal for coffee production, while areas that are currently prime coffee growing locations will be too hot and dry in the future.

Ceballos-Sierra grew up on a coffee farm in the Tolima district of Colombia, and he has seen firsthand how changing climate conditions affect production.

“My family’s farm is about 1900 meters above sea level. Twenty years ago, people would consider that an upper marginal coffee growing area. But now we’re getting significant improvements in yield,” he says.

Meanwhile, coffee growers in lowland areas see decreasing yields, while pests that prey on coffee plants, such as the coffee bean borer, are becoming more aggressive and prevalent.

The research findings have important implications both for coffee growers and policymakers.

“In the future it will be more beneficial to grow coffee higher up in the mountains. So, for those who can afford it, buying land in those areas would be a good investment,” Dall’Erba states. “The government might want to consider building infrastructures such as roads, water systems, electricity, and communication towers that would allow farmers in more elevated places to easily access nearby hubs and cities where they can sell their crops. We would expect more settlements and an increasing need for public services in those locations.”

However, because relocation is expensive, it will not necessarily be an option for most of Colombia’s 550,000 smallholder coffee growers, who will need to find other ways to adapt. Farmers might be able to implement new strategies, such as more frequent irrigation, increased use of forest shade, or shifting to different coffee varieties or other crops.

“Our research presents what we anticipate will happen 20 to 40 years from now, given current conditions and practices. Future studies can look into different adaptation strategies and their costs, and evaluate which options are best. Beyond the 40-year horizon we focus on, the prospects might be grimmer without adaptation. Production cannot keep moving to higher levels. Indeed, no mountain top is above 5800 meters (18,000 feet) in Colombia,” Dall’Erba says.

Colombia’s policymakers can also focus on supporting farmers who no longer will be able to make a living from growing coffee, so they can transition to something else, Ceballos-Sierra states.

“Looking into these regional estimates allows us to make predictions and provide policy suggestions. Specific place-tailored strategies should guide how coffee production adapts to future climate conditions in Colombia,” he concludes.

The researchers say their findings may also apply to other coffee growing locations, including Hawaii, California, and Puerto Rico in the United States.

IMAGE CREDIT: COLLEGE OF AC ES, UNIVERSITY OF ILLINOIS

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