Area Natural de Manejo Integrado Municipal Serranias de Iguembe: Andean-Chaco Protected Landscapes

Serranias de Iguembe is most recognized as a transitional Andean-to-Chaco conservation landscape, where Bolivian montane subtropical forest and Serrano Chaqueño woodland protect a known population of emblematic Chaco and Andean species. Its altitudinal transition between eastern Andean ranges and the Chaco lowlands creates overlapping habitats, holding military macaws, Andean condors, tapirs, jaguars, and giant anteaters in the same protected space. The area is also distinctive for its integration of communal Guarani and campesino livelihoods into municipal protected-area governance, blending biocultural heritage with conservation.

The push to protect the Serranias de Iguembe landscape began as a municipal proposal in 2011. After almost a decade of planning and consultation, the area was formally established in 2020 through Municipal Law No. 094/2020 of the municipality of Villa Vaca Guzman.

The 2020 law formalized protection over approximately 122,313 hectares of forest in the Chaco transition zone of the Cordillera Oriental. Beyond its municipal status, the area remains in the process of being officially declared as a Departamento-level protected area, suggesting that its institutional footprint continues to expand. Within its territory, the Guarani Tentayapi community had already been recognized in 2004 as a Historical, Cultural and Natural Heritage of Bolivia, highlighting the long-standing human and cultural significance of the landscape that the 2020 protected-area designation sought to formally safeguard.

Serranias de Iguembe sits on the eastern flanks of the Cordillera Oriental in the Bolivian Andes, the point where the high ranges descend toward the Bolivian Chaco. The result is a stepped geography of mountains, foothills, submontane valleys, and gradually flatter terrain reaching into the Chaco.

The landscape is shaped by mountain ridges, serranias, and valleys typical of this Andean-Chaco transition. A network of forested slopes, seasonal watercourses, and escarpments carries moisture from the highlands downward, supporting a gradient of vegetation types. High-altitude grasslands appear alongside lower subtropical slopes, while southern exposures shift toward drier Serrano Chaqueño woodland, a structural pattern characteristic of this part of the Andes of Chuquisaca.

The vegetation of Serranias de Iguembe is dominated by subtropical and temperate forests belonging to the Tucumano-Bolivian biogeographic district. Subhumid montane and submontane forests dominate higher elevations, blending into highland grasslands on exposed ridges and Serrano Chaqueño forest formations as altitude and aridity increase.

Floristic surveys recorded approximately 205 plant species. Among the most representative trees are cebil, mara blanca, lapacho rosado, cuchi, and quebracho colorado, a species mix that signals the overlap of Andean foothill and Chaco floristic influences. The vertical gradient between humid upper slopes and dry lower valleys creates a layered vegetation structure that supports both mountain-edge and Chaco-associated wildlife.

The wildlife profile of Serranias de Iguembe combines high-Andean species, Chaco specialists, and Amazonian foothill forms, a product of the area's transitional geography. Surveys by Fundacion Natura documented 92 bird species, 31 mammal species, and 10 reptile species.

Among the emblematic mammals are the jucumari (Andean or spectacled bear), puma, gato de monte (ocelot or jaguarundi), tapir, peccary, and giant anteater. The area is also part of the national conservation framework for the spectacled bear, indicating its recognized role in protecting this threatened Andean species. Notable birdlife includes the military macaw, listed as vulnerable, and the Andean condor, for which nesting sites have been recorded within the protected landscape, a notable finding given the species' broader Andean distribution.

Serranias de Iguembe is conservation-significant as one of the few formally designated areas protecting the Andean-Chaco ecological transition in the Chuquisaca department. Its mosaic of montane subtropical forest, subhumid woodlands, highland grasslands, and Serrano Chaqueño formations creates habitat continuity that is rare at this elevation gradient, and that supports emblematic species such as the spectacled bear, Andean condor, military macaw, and giant anteater.

The protected area also plays a role in a broader national conservation framework, particularly as part of the designated Andean bear conservation area. Its current legal status as a municipal protected area, combined with ongoing departmental-level recognition, reflects an effort to anchor long-term conservation in a region where pressure from cattle grazing, small-scale hunting, slash-and-burn agriculture, and selective logging remains active.

Environmental threats documented for the area include the expansion of cattle and goat pastures, low-scale illegal hunting, subsistence hunting by indigenous communities, and deforestation driven by selective logging and the agricultural frontier, particularly maize cultivation on hillsides. The challenge for conservation management is therefore to maintain habitat integrity while sustaining the livelihoods of the seven Guarani and seven campesino communities that inhabit the landscape.

Serranias de Iguembe is as much a cultural landscape as an ecological one. Seven indigenous Guarani communities and seven campesino (peasant farming) communities live within its boundaries, giving the protected area a strong communal dimension.

The Guarani community of Tentayapi, based in the area, was declared a Historical, Cultural and Natural Heritage of Bolivia in 2004, reflecting long-standing recognition of the landscape's cultural depth. The presence of these communities shapes land use: maize cultivation on slopes, subsistence hunting, livestock raising, and selective wood use for household needs are all part of the current reality of the protected area. This makes Serranias de Iguembe an example of a Bolivian municipal protected area developed around existing inhabited landscapes rather than around an uninhabited reserve core.

A transitional Andean-to-Chaco landscape protecting both Andean and Chaco biodiversity. Significant concentrations of emblematic mammals including spectacled bear, tapir, puma, and giant anteater. Nesting habitat for Andean condor and population presence of the vulnerable military macaw. A botanically rich forest with cebil, mara blanca, lapacho rosado, cuchi, and quebracho colorado. A model of integrating seven Guarani communities and seven campesino communities into municipal conservation governance.

Because the source material does not provide a clear basis for seasonal visit guidance specific to Serranias de Iguembe, detailed timing recommendations cannot be reliably drawn from the available content. The area sits in a subtropical montane to Chaco transition, where dry seasons and wet seasons could meaningfully shape both access conditions and wildlife observation, but specifics should not be inferred beyond that general character.