Transhumance is the seasonal movement of livestock between fixed pastures, typically driven by changes in climate and the availability of grazing land and water. It is one of the oldest forms of pastoral farming, practiced on every inhabited continent, and in 2019 it was inscribed on UNESCO’s Representative List of the Intangible Cultural Heritage of Humanity.
How Transhumance Works
At its core, transhumance follows a simple logic: grass and water move with the seasons, so herders and their animals move with them. Unlike fully nomadic herding, where families travel without fixed endpoints, transhumance operates along established routes between known pastures. Herders leave one grazing area as it dries out or becomes snow-covered, travel a set path, and arrive at a second area where conditions are better. Months later, they reverse the journey. The animals involved are most commonly sheep, goats, and cattle, though reindeer, yaks, and camels feature in colder or more arid regions.
The practice has two broad forms. Vertical transhumance is the mountain variety: livestock graze high alpine meadows in summer, then descend to sheltered valleys for winter. This is the classic pattern in the Alps, the Pyrenees, the Cantabrian Mountains of Spain, and the Himalayas. Horizontal transhumance covers longer distances across relatively flat terrain, following rainfall rather than elevation. Cattle herders in the West African Sahel move between rainy-season and dry-season pastures, sometimes crossing national borders. Reindeer pastoralists in the Siberian tundra follow a similar horizontal rhythm, shifting between winter and summer grazing grounds.
Why It Matters for Ecosystems
Transhumance is not just a way to feed animals. It actively shapes the landscapes it passes through. Research on sheep transhumance in the Cantabrian Mountains found that when grazing was removed from mountain grasslands, both biodiversity and soil fertility declined. The reasons are layered. Grazing animals act as seed dispersers, carrying plant species across wide distances in their wool and digestive tracts. Their hooves break up compacted soil. Their urine and dung feed microbial communities underground, accelerating nutrient cycling in ways that keep grassland soils productive.
When researchers excluded transhumant sheep flocks from mountain pastures for extended periods, they observed measurable drops in what ecologists call “ecosystem multifunctionality,” a composite measure of soil health, plant diversity, and nutrient availability. The decline was not just about missing fertilizer. Without grazing pressure, dominant plant species crowd out smaller ones, reducing overall diversity. In fire-prone Mediterranean landscapes, the removal of grazing animals also lets dry vegetation accumulate, increasing wildfire risk.
A Deep Historical Footprint
Transhumance has shaped infrastructure and law for centuries. Spain offers one of the most dramatic examples. Beginning in the 13th century, livestock organizations governed a complex network of migration routes called cañadas, some stretching hundreds of kilometers across the Iberian Peninsula. These corridors benefited from special royal legislation that protected herders’ right of way, even across private land. Some of those routes still exist today, though many have been encroached upon by roads and urban development.
Similar route networks developed across the Mediterranean, the Alps, and the Sahel. In many regions, the trails themselves became cultural landmarks, lined with watering points, shelters, and seasonal markets. Festivals marking the departure and return of herds remain important community events in parts of Italy, France, Spain, and Greece.
UNESCO Recognition
Italy, Austria, and Greece led the initial effort to have transhumance recognized by UNESCO, achieving inscription in 2019. The designation was later extended through a multinational process involving ten countries and an international steering committee. UNESCO’s evaluation highlighted the practice as a blend of tradition and innovation that benefits ecosystems, preserves local livestock breeds, and enhances soil fertility and biodiversity. Beyond its ecological role, the committee recognized transhumance as a full socio-economic system encompassing gastronomy, handicrafts, and cultural activities.
Transmission of knowledge happens primarily through observation and imitation within families, with children learning routes, animal behavior, and land management by accompanying older herders. Formal education, workshops, and dedicated transhumance museums now supplement that family-based learning in several European countries.
Modern Threats to the Practice
Transhumance is under pressure from multiple directions. The most fundamental is land loss. Urban expansion, highway construction, and the conversion of open land to crop agriculture have fragmented or erased traditional migration corridors in many regions. Once a route is blocked, there is often no alternative path, and the entire seasonal cycle breaks down.
Climate change compounds the problem. In the Sahel, annual wet-season rainfall has declined markedly since the late 1960s. In low-precipitation years, marginal grazing lands do not produce enough plant growth to sustain herds, forcing pastoralists to move onto agricultural farmland earlier than usual. If animals arrive before crops have been harvested, the result is damaged fields and competition for water, a dynamic that has fueled serious conflict across West and Central Africa.
Conservation areas present another, less obvious obstacle. Protected lands often overlap with traditional grazing corridors, and regulations typically forbid livestock access or impose fees. Research published in The Review of Economic Studies found that the effects of disrupted migration routes were greater in countries with more protected conservation land. Rather than resolving tensions between herders and farmers, the restrictions deflected conflict toward other parts of the country. Agricultural development projects, too, can backfire: by making marginal land more productive for crops, they encourage its conversion from open rangeland, shrinking the territory available to transhumant herders.
What Transhumance Looks Like Today
Despite these pressures, transhumance persists across a wide geographic range. Alpine herders in Austria and Switzerland still drive cattle to high pastures each summer in events that draw both tourists and media attention. In southern France and Spain, sheep flocks follow cañadas that have been walked for centuries. Across the Sahel, millions of cattle move seasonally between Nigeria, Niger, Chad, Cameroon, and neighboring countries. In the Himalayas, yak and sheep herders in Nepal and northern India shift between valley floors and high-altitude grazing grounds as snow lines retreat.
What connects all of these is a shared principle: matching animal needs to the land’s natural rhythm rather than forcing year-round production from a single location. In an era of intensifying land use and climate instability, the practice represents both a cultural inheritance and a working model of adaptive land management that industrial farming systems struggle to replicate.