Typology of livestock farms and its relationship with the environmental offer in high Andean dairy systems

In the high mountains of the Andes, where the air is thin and the ground is often steep, farmers face a constant balancing act. They must raise livestock to feed their families and communities while trying not to damage the fragile land that supports them. This delicate relationship between the farmer and the landscape is what scientists call the "environmental offer." It is simply a measure of how much nature provides a specific piece of land: the amount of rain it receives, the temperature it holds, how flat or steep the ground is, and how much green vegetation grows there naturally. When the land offers plenty of rich soil and gentle slopes, farming can happen with little help from outside. But when the land is harsh, steep, or dry, farmers must work harder, often bringing in extra energy like chemical fertilizers or heavy machinery to make the land productive. Understanding this balance is crucial because if farmers push the land too hard in the wrong places, the soil can erode, water sources can dry up, and the entire system can collapse.

A researcher set out to map this invisible balance in Guatavita, a municipality in the Colombian Andes known for its dairy farming. They wanted to see exactly where the farms were located and whether those locations matched what the land could naturally support. To do this, they turned to the sky. Using satellite images, they created a detailed picture of the region, measuring everything from the height of the mountains to the greenness of the grass. They combined these measurements with data on rainfall and temperature to create a single map that categorized the land into different levels of potential, ranging from "very high" to "low." This map showed which areas were naturally suited for dairy farming and which were struggling.

The researcher then looked at the farms themselves. They gathered information from hundreds of dairy producers in the area, asking about their technology, the size of their pastures, and how much milk their cows produced. By sorting this data, they found that the farms fell into four distinct groups. One group used modern machinery and chemicals to get high milk yields on large, flat fields. Another group relied on a mix of traditional and modern methods on medium-sized, rolling hills. A third group consisted of small, traditional farms on steep slopes that produced less milk but carried more animals per acre. The final group was unique: these were eco-friendly farms that used organic methods and recycled nutrients, producing a decent amount of milk without heavy chemical inputs.

When the researcher overlaid the farm locations onto their environmental map, a striking pattern emerged. Most of the dairy farms, about 61.5 percent, were situated in areas with only a "medium" environmental offer. These are places where the land is not naturally perfect for farming; the slopes are often too steep, or the soil is not rich enough. Only a tiny fraction, 8.3 percent, of the farms were located in areas with a "very high" environmental offer, where nature provides everything the cows need. The study suggests that because so many farms are in these less-than-ideal spots, farmers are forced to make difficult choices. To make their land work, they often have to bring in external energy, such as chemical fertilizers and animal feed supplements, to fix the deficiencies of the environment. This reliance on outside inputs can make the system less efficient and more expensive in the long run.

The study also revealed that the areas with the best natural conditions for farming—those with high rainfall and lush vegetation—are actually the least populated by dairy farms. These prime spots are often found at higher altitudes or in steep, mountainous regions where roads are poor and the terrain is too rough for easy access. Instead, the majority of the farming activity is concentrated in the drier, cooler zones where the land is more accessible but less naturally fertile. This mismatch between where the farms are and where the land is best suited creates pressure on the soil. The researcher noted that this pressure is visible in the landscape, where the natural green cover is often replaced by agricultural use, leading to a lower ability of the land to regenerate on its own.

By combining satellite technology with on-the-ground surveys, the study provides a clear picture of how dairy farming is adapting to the challenges of the Andes. It shows that while farmers are finding ways to be productive, many are doing so in places where nature is not fully on their side. The findings suggest that for the future of these farms to be sustainable, there needs be a better understanding of the land's limits. If farmers and planners can use these maps to guide decisions, they might be able to move farming activities to areas where the land can support them more easily, reducing the need for heavy chemical inputs and protecting the water and soil that the entire region depends on. The work highlights that the success of a farm is not just about the technology the farmer uses, but also about how well that technology fits the specific, natural gifts of the land it sits upon.