- Across 50 years and multiple countries, it’s clear that Mennonite colonies are systematic agents of deforestation in Latin America, yet they are seldom engaged by policymakers or NGOs seeking to reduce forest loss.
- In part this is due to the colonies’ closed nature but also because their habit of buying in frontier regions is effectively banned by law in Brazil — a nation which dominates the Amazon policy sphere — but a new analysis posits that engagement with these groups is necessary and potentially fruitful.
- “Mennonite pioneers have transformed the South American forest frontier with remarkable, and unfortunate, efficiency. The question now is whether the legal, regulatory, and civil society frameworks of the countries where they now reside can engage them as partners in a different kind of transformation,” the author argues.
- This article is an analysis. The views expressed are those of the author, not necessarily of Mongabay.
In the global debate over tropical deforestation, the usual cast of villains is well established: agribusiness, global supply chains, cattle ranchers, and governments granting land concessions for political support. One actor rarely appears in this narrative yet has played a consequential role in transforming the South American lowland frontier: The Mennonite agricultural colonist. For more than five decades, Mennonite communities have functioned as systematic agents of agricultural frontier expansion in the Gran Chaco and Andean Amazon, methodically clearing forests, draining wetlands, and catalyzing waves of deforestation that extend far beyond any individual colony.
Mennonite communities operate within the law. They purchase land through formal channels, build permanent communities, and transfer agronomic knowledge to surrounding populations. Their values emphasize hard work, communal solidarity, and a theological relationship to land as stewardship. None of this changes the ecological outcome: Wherever a Mennonite colony is established, forests fall.
Faith, mobility and colony formation
Mennonites are an Anabaptist denomination rooted in the 16-century Reformation, distinguished by pacifism, communal life, and cultural separation from mainstream society. Conservative congregations — whose ancestors moved from Russia to Canada, then to Mexico, Belize and South America — are organized around a local congregation that functions simultaneously as a religious community, governance structure, credit cooperative and social welfare system. When a colony is established, it is an orderly community with collective decision-making, shared infrastructure, and a coherent plan for the future.
The pattern of colony formation is consistent. A community council identifies a large block of land in a frontier zone where land is cheap. The block is purchased in a single transaction from an intermediary, subdivided into plots, distributed to member families, and cleared simultaneously. Roads follow a grid, a church and school rise at the center, and within a few years, the former forest is a functioning agricultural landscape: Flat fields, straight roads, grain silos and dairy facilities. The indirect effects extend far beyond colony boundaries. Access roads open surrounding forest to other settlers, and commercial infrastructure (fuel depots, grain stations, machinery dealers) creates conditions under which non-Mennonite farmers also thrive. A Mennonite colony is not merely an agricultural enterprise; it is a catalyst for the deforestation of surrounding landscapes.
Bolivia provides the most extensively documented case of Mennonite-driven frontier transformation. The first colony, Tres Palmas, was established in 1954 near Santa Cruz, when the Bolivian government actively recruited immigrants to develop the lowland interior. Initial settlements occupied the alluvial plains at the biogeographic intersection of the Amazon, Gran Chaco and Chiquitano Dry Forest. As original colonies filled and the children of founding families sought land, daughter colonies pushed progressively further into the forest.
By the 1990s, Santa Cruz hosted dozens of colonies ranging from 3,000 to more than 50,000 hectares (approximately 7,500 to 125,000 acres). Satellite imagery documents the characteristic signature: Rectangular clearings in geometric grids, advancing into native forest. Direct deforestation attributable to Mennonite colonies is estimated at about 1 million hectares (almost 2.5 million acres).
From the late 2000s onward, Mennonite farmers have expanded into Chiquitania, a region defined by the Precambrian shield and Jesuit-era Indigenous towns. As skilled agriculturalists, they have used technology to overcome the limitations of the region’s acidic red soils, accelerating deforestation in a landscape renowned for its culture and biodiversity.
Beside their agricultural acumen, another distinctive feature of Mennonite frontier expansion is its formal, legal character. Colonies do not invade public lands or forge titles; they purchase through formal transactions from sellers whose own acquisition may — or may not have — been legitimate. Land tenure on the forest frontier is almost always fraught with a history of fraud, as ‘land grabbers’ appropriate public lands by combining bureaucratic tactics, political connections and falsified documentation.
The pioneer colony acquires its landholding at the end of a chain of transactions whose earlier links almost always include illegal activity. Colony councils are sophisticated buyers, and they fully understand the questionable provenance of their purchase. They also know that on the forest frontier, physical possession and conversion provide protection that the legal title by itself does not provide.
The ecological impact is amplified by their intensity of land use. Unlike most Amazonian frontier farms, where low cattle-stocking rates allow scrub to persist along fences and streams, or where rotational fallow permits the establishment of secondary forest, Mennonite farms leave no habitat remnants. The geometric grid imposed on the land takes no account of watercourses, wetlands, or seasonal streams, which are channeled, filled, or farmed over, disrupting hydrological connectivity across watersheds. The colony provides no refuge for forest-dependent wildlife. It is a complete substitution of the original ecosystem.
Mechanized grain production — primarily soy, sorghum, sunflower and wheat, with dairy and beef cattle on pasture and silage — is supported by inputs indistinguishable from large-scale agribusiness. Glyphosate, fungicide, and insecticide regimes create a chemical environment hostile to the invertebrate, amphibian, and small-vertebrate communities that might persist in lightly managed farm landscapes. Water quality in drainage channels reflects this intensity, with downstream implications that are poorly studied but unlikely to be benign.
Demonstration, expansion and frontiers
Mennonite communities are sophisticated adopters of agricultural technology, despite a theological commitment to traditional social structure. Mechanized tillage, precision planting, herbicide-based weed management, hybrid seeds, and GPS-guided equipment are standard. Self-sufficiency is an aspiration; in practice, colonies use credit, and sell into regional and global commodity markets. Families and communities actively plan for intergenerational demand for land. Expansion is not incidental to Mennonite agriculture: It is a structural attribute.
This technological competence has a dual character. Diffusion of Mennonite techniques to surrounding communities has raised the productivity of migrant smallholders who might otherwise remain subsistence farmers. Mennonite colonization has contributed to rural development in regions where state programs have been chronically ineffective, but the darker dimension is that non-sustainable practices (chemical inputs, monoculture, intensive land management) are transmitted alongside the gains in productivity. The colony functions as an agricultural extension service for frontier conversion, teaching the surrounding landscape how to farm with total agronomic intensity.
The pattern is now repeating in new geographies. At least five Mennonite colonies have been established in Peru’s lowland departments of Ucayali and Loreto, located on virgin rainforest where large-block acquisition requires fraud and the collusion of local elites, who conspire to deliver land to buyers uninterested in — or unconcerned for — the Indigenous claims long ignored by the Peruvian state.
Colombia’s Orinoco savannas have similarly attracted Mennonite interest, with four colonies established in departments inaccessible until the peace accord of 2016. The imperfect peace, however, has created conditions highly favorable for illegal or quasi legal land transactions amenable for Mennonite buyers. The consistent logic is ‘comparative land economics’ where Mennonite communities seek cheap frontier land, which by definition is land whose ecosystem values are not reflected in rural real estate markets.
Watch the Mongabay investigation “How did a religious group take over part of the Amazon?” here:
The Brazilian exception and the Andean policy blind spot
One of the most telling features of this story is a conspicuous geographical absence. Despite hosting the largest share of the Amazon basin and a soy and beef sector that has itself driven massive deforestation, Brazil has no Mennonite colonies. Brazil’s constitution and a 1971 law impose strict limitations on rural land ownership by foreign nationals. The large-block purchase that a Mennonite colony requires is either prohibited outright or subject to regulatory hurdles that make it impractical.
This exclusion has compounded a broader policy blind spot because Brazil dominates the Amazonian policy space, so conservation organizations, bilateral agencies, and multilateral institutions address deforestation primarily through the lens of Brazilian experience. Because the Mennonite phenomenon does not exist in Brazil, it has never been a policy priority. Even in Bolivia, no entity has seriously tried to understand or address one of the country’s major drivers of deforestation.
The most striking feature of the policy response to Mennonite-driven deforestation is the near-total absence of any attempt to directly engage these communities. Conservation organizations and development agencies — that have invested significant resources in changing the behavior of cattle ranchers and agro-industrial corporations — have made no sustained effort to engage Mennonites. The explanations are multiple: Cultural insularity, language barriers, theological distrust, and the simple fact that Mennonites do not appear in standard institutional diagrams of deforestation actors.
Yet the case for engagement is strong. Mennonite communities are, by their own belief system, stewards of the land. Progressive Mennonite organizations in North America have been active in sustainable agriculture, and the Mennonite Central Committee has incorporated environmental stewardship, defined as “care of creation” into its vision statement. Whether these initiatives can engage the conservative communities of Bolivia, Peru and Colombia has never been seriously tested. Colony councils have genuine decision-making authority, and agreements negotiated with a council are implemented consistently across an entire colony, making them far more effective interlocutors than other migrant smallholder communities.
What now?
The empirical record across 50 years and multiple countries is clear: Mennonite colonies are systematic agents of deforestation. Their formal legality and communal respectability do not reduce their ecological footprint. The near-total conversion of colony landscapes — no riparian zones, no remnant forest, no fallow cycles — makes Mennonite-driven deforestation among the most complete and least reversible forms of habitat loss on the continent. The Brazilian exception demonstrates that law can be an effective barrier, but that requires a legal system that seeks to constrain their behavior.
For example, if undeveloped public forest was permanently removed from the rural real estate market, new Mennonite colonies would then be forced to purchase previously deforested landholdings. In Bolivia and Colombia, there is an excess of degraded pasture available, much of it suitable for regenerative agriculture that would benefit the land, the watershed, and the Mennonite colonists themselves. They may be proficient conventional farmers, but their practices do not meet the widely accepted standards of sustainability.
Addressing the Mennonite dimension of South American deforestation requires action on multiple fronts: Reform of rural real estate markets and the closure of the forest frontier; inclusion of Mennonite-controlled territories in national deforestation monitoring; application of the conservation requirements that apply to all other private landholders; and a sustained, culturally-informed engagement program with colony councils that takes seriously both the ecological urgency and the theological framework within which these communities understand their relationship to land.
Mennonite pioneers have transformed the South American forest frontier with remarkable, and unfortunate, efficiency. The question now is whether the legal, regulatory, and civil society frameworks of the countries where they now reside can engage them as partners in a different kind of transformation.
Timothy J. Killeen is an ecologist and conservation biologist with a background in disciplines including genetics, botany and taxonomy. Since the 1980s, Killeen has studied the rainforests of Brazil and Bolivia, where he lived for more than 35 years. He is the author of “A Perfect Storm in the Amazon.”
See related coverage:
Mennonites from Belize spark deforestation fears with new settlement plans in Suriname
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