Pastoralism is a livelihood system based on raising livestock on open rangelands rather than in fixed farms or feedlots. It involves moving herds of cattle, sheep, goats, or camels across large stretches of land to find fresh grazing and water. Up to 500 million people worldwide practice this form of animal husbandry, and the rangelands they use cover more than half of the Earth’s land surface.
How Pastoralism Works
At its core, pastoralism depends on mobility. Rather than growing feed crops and bringing food to animals, pastoralists move their animals to where grass and water naturally exist. This might mean short seasonal shifts between lowland and highland pastures, or longer migrations spanning hundreds of kilometers across arid terrain. The specific pattern depends on rainfall, temperature, and the needs of the herd.
Production is organized at the household level. A family’s labor capacity often determines how many animals it can manage. Herds serve multiple purposes at once: they provide milk, meat, hides, and transport while also functioning as savings, social currency, and insurance against hard times. This stands in sharp contrast to commercial ranching, where land is privately owned and fenced, and livestock are treated primarily as commodities for market sale.
The Animals and the Diet
The most commonly herded species are cattle, sheep, goats, and camels, though the mix varies by region and climate. Cattle dominate wetter grasslands, while camels are better suited to the driest zones.
Milk is the nutritional backbone of most pastoralist diets. Among herding communities in eastern Africa today, milk and milk products from cattle, camels, sheep, and goats provide 60% to 90% of total calories. This dietary pattern has deep roots: archaeological evidence from northern Kenya shows that herders were drinking milk or eating milk-based products at least 5,000 years ago. During droughts or dry seasons, when milk runs short, meat consumption increases, and pastoralists supplement their diets with wild plant foods and, in modern times, staples like maize and beans.
The ability to digest milk into adulthood, known as lactase persistence, evolved in pastoralist populations over thousands of years and helped make these high-protein, milk-heavy diets sustainable across generations.
Communal Land and Water Governance
Pastoralists typically graze their animals on communal or open-access land rather than privately owned property. Managing shared resources across vast, dry landscapes requires sophisticated social systems. Most pastoral communities have established governance structures dedicated to overseeing water and pasture access.
Among the Borana of Ethiopia, for example, an elaborate landscape-based water governance system regulates who can draw water and when, covering both immediate community members and those arriving from distant areas. The Gabbra community appoints specific well managers to oversee hand-dug wells, with excavation and upkeep handled collectively by clan members. These aren’t informal arrangements. They are structured institutions with defined roles, and they carry a moral weight. Pastoralists in Ethiopia describe sharing water as a moral imperative, not simply a practical one.
These traditional systems face growing pressure. In some communities, governance over water has shifted away from elders toward government-appointed administrators, eroding the customary authority that kept the systems functioning for centuries.
Why Pastoralism Matters for the Environment
Pastoralism plays a surprisingly important role in maintaining healthy rangelands. Mobile grazing mimics the natural disturbance patterns that grasslands evolved with, and research shows it can maintain or even enhance biodiversity.
Grazing increases plant species richness compared with areas where grazing is excluded, particularly in wetter, more productive grasslands. The mechanism is straightforward: grazing reduces the competitive advantage of dominant plant species, opening up space and resources for less common ones. Without grazing or fire, woody shrubs tend to encroach on grasslands, reducing the diversity of species that depend on open habitat. The combination of fire and grazing effectively limits this encroachment and creates varied vegetation patterns that support a wider range of birds and mammals.
Livestock also serve as seed dispersers, sometimes over remarkable distances. Experiments in western Spain showed that sheep transported seeds of multiple plant species up to 400 kilometers over a 28-day journey. In parts of Europe, transhumant livestock (herds that move seasonally between fixed pastures) are an important food source for rare vultures, leading conservationists to actively advocate for continuing the practice. Pastoralism has also helped limit biodiversity loss simply by keeping rangelands in use as rangelands, preventing their conversion to cropland or urban development.
Economic Significance
In many countries, pastoralism is not a relic of the past but a major economic force. In Chad, pastoral livestock account for 80% of all ruminant animals, 40% of agricultural production, 18% of GDP, and 30% of exports. Across sub-Saharan Africa and Central Asia, pastoralism remains the most productive use of land that is too dry, too steep, or too variable in rainfall to support crop farming. Roughly 200 million people raise livestock as their primary livelihood on these rangelands.
Climate Change and Modern Pressures
The mobility that defines pastoralism is also what makes it vulnerable to modern disruptions. Climate change is altering the conditions pastoralists have navigated for millennia. In Burkina Faso, temperatures have risen markedly during the March-to-June hot season, with most observations after 2010 exceeding historical averages. Even where rainfall appears to be recovering, accelerated warming counterbalances any benefit through increased heat stress on animals and pastures.
Herders report pasture scarcity, disrupted migration corridors, and shifts in traditional routes and destinations. Livestock-oriented households are changing where they go, while crop-oriented households report needing to leave earlier and stay longer in host zones. These shifts create friction with settled farming communities along the routes and at destinations, compounding the challenge.
Beyond climate, pastoralists face pressure from expanding agriculture, government policies that favor settled farming, border restrictions that cut across migration routes, and the erosion of traditional governance systems. Despite these pressures, pastoralism persists because it remains the most efficient way to turn vast, variable landscapes into food and livelihoods.