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| Planalto Serrano | |
|---|---|
| Name | Planalto Serrano |
| Settlement type | Plateau |
| Subdivision type | Country |
| Subdivision name | Brazil |
| Subdivision type1 | Region |
| Subdivision name1 | South Region |
| Subdivision type2 | State |
| Subdivision name2 | Santa Catarina |
Planalto Serrano is a highland plateau region in the state of Santa Catarina, Brazil, forming part of the Brazilian Highlands and linked to the Serra Geral and Serra do Mar mountain systems. The region lies within the Southern Region of Brazil and interfaces with municipalities such as Urubici, São Joaquim, Lages, and Lauro Müller, and it influences river basins including the Canoas and Pelotas. Historically and culturally tied to waves of European immigration from Italy, Germany, and Poland, the plateau hosts agrarian communities, Indigenous Guarani heritage sites, and scientific research stations from Brazilian universities.
The plateau occupies a portion of the Brazilian Highlands and is bounded by the Serra Geral escarpment and the Planalto Catarinense, adjoining the Atlantic Forest biome and the Araucaria moist forests. Major urban centers include Lages, Santa Catarina, Urubici, São Joaquim, Santa Catarina, Bom Jardim da Serra, and Grão Pará, Santa Catarina, while nearby transport nodes include the BR-101 corridor and the BR-116 highway system. Hydrologically the area feeds tributaries of the Uruguai River, Pelotas River, and the Canoas River, contributing to the La Plata Basin and coastal basins connecting to the Atlantic Ocean. The plateau is intersected by municipal parks and conservation units administered by the State of Santa Catarina and managed with input from institutions such as the Instituto Chico Mendes de Conservação da Biodiversidade and regional universities including the Universidade Federal de Santa Catarina.
Geologically the plateau is part of the Serra Geral Formation, composed of flood basalts of the Paraná Basin linked to the Gondwana breakup and the Cretaceous volcanic episodes contemporaneous with formations exposed in Rio Grande do Sul and Paraná. Topographic features include mesas, escarpments, canyons, and quartzitic outcrops related to the Cambrian-age basement and the overlying Cretaceous basaltic sequences. Prominent geological landmarks include the Morro da Igreja and the Serra do Corvo Branco region with steep canyons comparable to formations in Iguaçu National Park and the Aparados da Serra National Park. Soils range from shallow lithosols on ridges to more developed cambisols in valleys, influencing land use and the distribution of Araucaria forests associated with the Campos de Cima da Serra highland complex.
The plateau experiences a subtropical highland climate influenced by altitude, the South Atlantic subtropical anticyclone, and orographic lift from the Serra Geral, producing cool summers, cold winters, frequent frost, and episodic snowfall at elevations near Morro da Igreja and São Joaquim. Climatic regimes are monitored by the Instituto Nacional de Meteorologia (INMET), with data showing marked diurnal temperature variation and precipitation patterns driven by frontal systems from the South Atlantic Ocean and polar air masses from the Southern Ocean. Microclimates occur in canyons and valleys, affecting viticulture projects in municipalities like São Joaquim, Santa Catarina and specialty horticulture near Urubici.
Vegetation mosaics include remnant Mata Atlântica (Atlantic Forest) fragments, Araucaria angustifolia-dominated Araucaria moist forests, highland grasslands known locally as campos de altitude, and riparian gallery forests supporting fauna characteristic of southern Brazil. Notable species include the endangered Araucaria angustifolia, the endangered Leopardus tigrinus-complex small felids, endangered avifauna such as the Crax blumenbachii-complex and endemic passerines recorded in surveys by researchers from the Museu Nacional and regional natural history collections. Amphibian assemblages include species described in studies linked to the Pontifical Catholic University of Rio Grande do Sul and the Universidade do Estado de Santa Catarina. The plateau provides habitat for mammals like the Myocastor coypus (introduced), native deer such as Blastocerus dichotomus in adjacent wetlands, and pollinators that support orchards cultivated by immigrant communities.
Pre-Columbian occupation included groups associated with the Guarani people and other indigenous cultures documented in lithic scatter and rock shelter sites studied by archaeologists from the Instituto do Patrimônio Histórico e Artístico Nacional and regional museums. Colonial-era exploration linked the plateau to bandeirante and tropeiro routes between the Captaincy of São Paulo and southern frontier settlements, later transformed by nineteenth- and twentieth-century immigration waves from Italy, Germany, Poland, and Azores islands communities. Municipal histories are recorded in archives of Lages, Santa Catarina and parish registers in Urubici and São Joaquim, Santa Catarina, while twentieth-century land reform initiatives and rural colonization programs affected land tenure and agricultural patterns under national policies implemented by ministries in Brasília.
Economic activity centers on family farming, temperate fruit orchards (apple, grape), dairy production, and timber extraction from planted pine and eucalyptus managed by companies registered with the Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis and cooperative associations such as local cooperatives in Lages. Agribusiness links the plateau to food processing facilities in Curitiba and export logistics via ports like Port of Itajaí and Port of Rio Grande. Renewable energy projects include small hydroelectric plants on tributaries and wind monitoring by research programs affiliated with the Universidade Federal de Santa Catarina. Land-use conflicts involve pasture expansion, exotic plantation forestry, and conservation priorities addressed through state legislation and municipal zoning instruments.
Tourism highlights include ecotourism at natural attractions such as Morro da Igreja, Serra do Corvo Branco, canyons comparable to Fortaleza Canyon, winter festivals in São Joaquim, Santa Catarina, and agro-tourism initiatives promoted by municipal tourism secretariats and the Brazilian Association of Ecotourism. Conservation efforts are implemented through protected areas like municipal parks, state parks, and biological reserves coordinated with the Ministry of the Environment and NGOs including national networks and regional chapters of international organizations. Scientific research and environmental education programs are conducted by universities such as the Universidade Federal de Santa Catarina, the Universidade do Estado de Santa Catarina, and international partners involved in biodiversity inventories, restoration of Araucaria landscapes, and sustainable rural development projects.
Category:Geography of Santa Catarina (state)