Serra do Tabuleiro

Serra do Tabuleiro State Park is the largest protected area in Santa Catarina state, Brazil, encompassing approximately 87,405 hectares across a diverse landscape that includes coastal plains, Atlantic Forest, restinga (coastal scrubland), and the highland plateau (tabuleiro). Established in 1975, the park straddles multiple municipalities in the coastal region south of Florianópolis, extending from sea-level mangroves and barrier islands to highlands above 1,000 meters. It is one of the most biologically diverse protected areas in southern Brazil and is especially significant for the protection of coastal Atlantic Forest and associated wetland ecosystems. The park's unique geography creates an extraordinary range of habitats within a relatively compact area.

The park's ecological diversity supports an exceptional range of wildlife. Large mammals include the South American tapir, maned wolf, puma, ocelot, giant anteater, and southern river otter. The coastal wetlands are critical habitat for migratory shorebirds, and the park is designated as an Important Bird Area — over 450 species have been recorded. Endangered marine turtles, including loggerhead and green turtles, nest on the park's beaches. Maned wolves patrol the highland grasslands, while ocelots and tapirs favor the denser forest zones. The lagoon and estuarine systems shelter caimans, capybaras, and abundant waterfowl. Amphibian diversity is particularly high owing to the range of humid habitats from coastal to montane.

Serra do Tabuleiro protects a mosaic of vegetation types rare in their combination. Dense ombrophilous Atlantic Forest covers the interior highlands. Restinga vegetation — low, salt-tolerant scrubland and forest — occurs on sandy coastal plains and is among the most threatened plant communities in Brazil. Mangrove forests line estuaries and sheltered bays, providing critical nursery habitat for marine species. High-altitude campos (grasslands) and Araucaria forest patches appear on the plateau. The park also protects patches of palm swamp dominated by jerivá (Syagrus romanzoffiana). Botanical surveys have identified over 1,800 plant species, including numerous endemics and species of conservation concern, particularly within the restinga and highland grassland communities.

The park spans the transition between the crystalline basement of the Serra Geral, composed of Precambrian gneisses and granites, and the coastal sedimentary plains formed during Quaternary sea level fluctuations. The highland tabuleiro platform is a remnant erosion surface capped by resistant quartzite and sandstone, creating the flat-topped profile that gives the park its name. Coastal features include barrier islands, lagoons, and sandy plains deposited as sea levels rose and fell during glacial-interglacial cycles. The island of Ilha do Cardoso (part of the park complex) is composed of ancient crystalline basement rocks exposed as a coastal inselberg. The geological diversity directly drives the extraordinary variety of soils and vegetation types within the park.

The park experiences a humid subtropical climate (Köppen Cfa) in coastal zones, transitioning to a temperate highland climate at higher elevations. Coastal areas have average annual temperatures of 20–22°C with rainfall around 1,500–1,800 mm, well-distributed throughout the year. The highland plateau is cooler, averaging 16–18°C, and receives over 2,000 mm annually, with occasional frost in June and July. The South Atlantic Convergence Zone brings heavy summer rainfall from November to March. Cold fronts from Antarctica periodically push cold air northward during winter, causing dramatic temperature drops along the coast. The climate variation across the park's altitudinal gradient is a key driver of its high biodiversity.

The region has been occupied since at least 6,000 years ago, as evidenced by sambaquis (shell middens) — large ceremonial and refuse mounds left by pre-Columbian coastal peoples — some of which are found within the park's coastal zone. The Kaingang and Xokleng (Laklãnõ) indigenous peoples inhabited the highland forests. Portuguese colonization in the 17th and 18th centuries brought coastal fishing villages and small-scale farming. German and Italian immigrants settled inland areas in the 19th century. The coastal lagoons and estuaries supported traditional fishing communities for generations. Large portions of the future park area remained largely undeveloped due to poor agricultural soil quality on the sandy coastal plains and steep highland terrain.

Serra do Tabuleiro was established by Santa Catarina State Decree No. 1,260 on November 1, 1975, making it one of the older state parks in southern Brazil. The park's creation was driven by recognition of the exceptional biological and scenic values of the coastal and highland landscape south of Florianópolis. Management has historically been challenging due to the presence of established communities within the park's boundaries, leading to ongoing legal and social complexities regarding land tenure. Significant boundary adjustments and regularization processes have been conducted, and the state environmental agency FATMA (now IMA) has overseen progressive improvements in management capacity. The park has been the subject of several management plans addressing zoning, community relations, and biodiversity protection.

The park's primary attractions include the Restinga de Massiambú, a striking coastal habitat accessible from the BR-101 highway, and the highland plateau offering extensive trekking. The Morro do Cambirela (1,080 m) provides panoramic views over the coast and Florianópolis from its summit, reachable via a strenuous full-day hike. Lagoa do Peri, a large freshwater lagoon within the adjacent protected area, is popular for swimming and kayaking. The park's beaches on the barrier islands are among the most pristine in Santa Catarina state. Birdwatching in the mangroves and restinga at dawn yields excellent sightings of shorebirds, kingfishers, and raptors. Guided ecological walks are offered through the park's environmental education program.

The park is administered by IMA (Instituto do Meio Ambiente de Santa Catarina) with multiple access points, the most frequented being from the BR-101 highway south of Florianópolis. The Restinga de Massiambú entrance has a visitor reception point with basic facilities. Campgrounds are available at designated sites. The city of Florianópolis (approximately 30 km north) serves as the primary base for visitors, offering all accommodation and services. Some sections of the park are accessible by public bus from Florianópolis; others require private vehicle or guided tours. The park is open year-round but high-altitude trails should be avoided during heavy summer rains. Entry is free at most access points.

Serra do Tabuleiro faces significant conservation pressures including boundary encroachments, illegal fishing in protected lagoons, poaching, and the complex issue of communities with historic land claims within the park. The park is critical for protecting coastal Atlantic Forest and restinga — habitats that have experienced over 98% reduction across Brazil. IMA coordinates with IBAMA, municipal governments, and NGOs on patrol operations, habitat restoration, and community programs. Sea turtle nesting is monitored annually in partnership with TAMAR, Brazil's national sea turtle conservation program. Invasive species, particularly the African grass Urochloa, threaten native restinga vegetation and require active management. Sustainable fishing programs with traditional communities aim to reconcile conservation with livelihoods.