Pampas
Fertile low grasslands of southern South America.
They include Argentine provinces (Buenos Aires, La Pampa, Santa Fe, Entre Ríos, Córdoba), all of Uruguay, and Brazil's southernmost state, Rio Grande do Sul. This natural region has been significantly altered by human activity, especially through the introduction of cattle, pigs, and sheep.
- Location
- Southern South America (Argentina, Uruguay, Brazil)
- Major ecoregions
- Uruguayan Savanna, Humid Pampas, Semiarid Pampas
Lore & Background
Low hills covered by grasslands are called coxilhas in Portuguese and cuchillas in Spanish, typical of the northern Pampas. The climate is temperate, with precipitation evenly distributed throughout the year, making soils appropriate for agriculture. Summers are hot (28–33 °C), winters mild (12–19 °C), with frost occurring everywhere but more frequent in the southwest. Snow is rare except in exceptional events.
Reader's Guide
The Pampas are a distinct physiography province of the larger Paraná–Paraguay plain division. Human activity has caused major changes to wildlife: large species like puma, rhea, capybara, maned wolf, and Pampas deer have lost habitats; jaguar and guanaco have been extirpated. Invasive species include European hare, wild boar, and house sparrow. The dominant vegetation is grassy prairie and grass steppe, with Stipa grasses and iconic Pampas grass (Cortaderia selloana). The pristine treelessness is debated, with hypotheses including seasonal drought, grass root competition, fires set by indigenous peoples, and heavy-bodied herbivores. The World Wildlife Fund divides the Pampas into three ecoregions: Uruguayan Savanna, Humid Pampas, and Semiarid Pampas.
Did You Know?
- The jaguar and guanaco have been completely extirpated from the Pampas.
- The region has among the most frequent lightning and highest convective cloud tops in the world.
Frequently Asked Questions
What are the Pampas?
The Pampas are a vast expanse of fertile, low-lying grasslands stretching across the southern part of South America. They are one of the most agriculturally productive natural regions on the continent.
Where exactly is the Pampas region located?
It spans parts of Argentina (including Buenos Aires, La Pampa, Santa Fe, Entre Ríos, and Córdoba provinces), the entirety of Uruguay, and Brazil's southernmost state, Rio Grande do Sul.
What major ecoregions make up the Pampas?
The region is divided into three principal ecoregions: the Uruguayan Savanna, the Humid Pampas, and the Semiarid Pampas, each with its own distinct vegetation and climate profile.
How has human activity transformed the Pampas?
Centuries of pastoral farming have dramatically reshaped the landscape, particularly through the widespread introduction of cattle, pigs, and sheep, which replaced much of the native grassland ecology.
Why is the Pampas considered important?
Its rich, fertile soils and flat terrain have made it a cornerstone of South American agriculture and livestock production for centuries. It remains a defining geographic and cultural feature of the region.
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