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A Federal Stronghold for Neotropical Biodiversity
Established on June 30, 2022, via National Law 27,673, the Ansenuza National Park and National Reserve serves as a critical biological corridor in northeastern Córdoba. The protected area spans 661,416 hectares, encompassing a diverse mix of dry Chaco woodland, open water, and expansive wetlands.
The heart of the park is Laguna Mar Chiquita (also known as Mar de Ansenuza). This site is South America’s largest endorheic saline lake and ranks among the largest closed basins in the world. Its federal protection is the result of a strategic partnership between the Administración de Parques Nacionales (APN), the province of Córdoba, Aves Argentinas, and the Wyss Foundation.
The Hypersaline Engine of Mar Chiquita
The lake operates as a terminal basin, meaning water only exits through evaporation. This process creates hypersaline mineral concentrations that support a specialized food web. The ecosystem is powered by halo-tolerant microalgae and the brine shrimp Artemia franciscana, which provide the primary energy source for the region's wildlife.
Recognized as a Ramsar Site of International Importance in 2002, the basin is a sanctuary for over 300 bird species. In fact, more than 60% of Argentina’s migratory birds utilize this site. Beyond the water, the park's scrublands and marshes support several key mammal species:
- Maned wolf (Chrysocyon brachyurus)
- Pampas cat (Leopardus pajeros)
- Capybara (Hydrochoerus hydrochaeris)
- Lowland tapir (Tapirus terrestris)
The Triple Flamingo Phenomenon
Ansenuza is globally unique for hosting three of the world's six flamingo species simultaneously. These birds derive their pink and crimson colors from carotenoid pigments found in the brine shrimp and algae they consume.
| Species | IUCN Status | Population/Presence | Key Behaviors & Timing |
|---|---|---|---|
| Chilean Flamingo | Near Threatened | 300,000+ (peak) | Resident breeder; nests in mud-mounds (Nov–Feb) |
| Andean Flamingo | Vulnerable | Seasonal Migrant | Winters here (May–Sept) to avoid frozen Andean lakes |
| James’s Flamingo | Near Threatened | Seasonal Migrant | Winter visitor (May–Aug); high-Andean specialist |
Economic Pivot Toward Sustainable Tourism
The region is moving away from a history of unregulated cattle grazing and fishing toward a regulated ecotourism model. The town of Miramar de Ansenuza has emerged as the primary gateway, shifting its economy toward eco-lodges and professional guiding services.
Financial sustainability is integrated into the park's management. Revenue from entrance fees, municipal taxes, and guide licensing funds essential APN operations, including:
- Ranger boat patrols.
- Satellite monitoring of Río Dulce water inflows.
- Collaborative research with the National University of Córdoba (UNC) to stop illegal agricultural water diversions.
Mandatory Visitor Protocols
To protect fragile nesting colonies and prevent soil compaction, the APN enforces strict guidelines for all visitors:
- Wildlife Buffers: Visitors must stay 150 meters away from feeding flocks and 300 meters from mud-nesting zones.
- Watercraft Rules: Outboard motors must be cut or replaced with electric trolling motors if birds show alert signs (vocalizing or wing-flagging).
- Drone Ban: Unmanned aerial vehicles are prohibited in core zones without a scientific permit.
- Guided Access: Excursions into the lagoon or Río Dulce estuary require a licensed guide registered with the APN and Córdoba Tourism Agency.
- Surface Protection: Staying on wooden boardwalks is mandatory to avoid destroying the nests of shorebirds like the Wilson’s phalarope.
- Waste Management: A strict "pack-out" policy is enforced to prevent altering the scavenging habits of local canids and raptors.
Key Takeaways
- Scale: Protects 661,416 hectares of critical wetlands and Chaco woodland.
- Global Rarity: One of the few sites globally where Chilean, Andean, and James’s flamingos coexist.
- Hydrology: A closed-basin hypersaline lake that supports 60% of Argentina's migratory birds.
- Conservation: Shifted from extractive grazing to a sustainable, fee-based ecotourism economy.
FAQ
When is the best time to see flamingos in Ansenuza? Peak season for resident Chilean flamingos is November to February. For the rarer Andean and James’s flamingos, visit between May and September.
Can I use a drone in the park? No. Drones are prohibited in core and nesting zones unless you possess a specific scientific research permit from the APN.
Is a guide required for boat trips? Yes, all water excursions into the lagoon and estuary must be led by a licensed guide registered with the APN and Córdoba Tourism Agency.
