In the Brazilian Amazon, a protected area may exist on maps and international pledges, but on the ground, its survival depends on something far more mundane: whether there is money to pay for the people who protect it. A sweeping study of Brazil's federal protected-area system reveals a staggering gap between legal protection and the reality of management. Of 300 federal protected areas covering nearly 750,000 square kilometers across Brazil, 72% were underfunded in 2023—a combined shortfall of about $958 million. In the Amazon itself, the problem is far worse. Amazonian protected areas received just one-fifth of what they needed to manage effectively, with an average funding deficit of 79.2%. Of the 122 Amazon protected areas examined, 120 fell below minimum cost thresholds.
The research, published in Environmental Conservation by Helenilza Ferreira Albuquerque Cunha and colleagues, analyzed spending data from 2014 to 2023 across three major ecological regions. The findings matter because they expose a paradox at the heart of Brazil's conservation efforts. The country has built one of the world's largest protected-area systems and has actually increased investment by about 30% over the past decade. Yet expansion has outpaced the development of stable financing mechanisms. Brazil has protected the land faster than it has secured the money to manage what it has protected.
The gap reflects not simple neglect but the brutal economics of Amazon conservation. Remote reserves are expensive to maintain. Many are vast, difficult to reach, and require river journeys or flights for field visits. A single manager may oversee an area larger than some countries. Enforcement involves long patrols across forests and rivers. Fuel, transport, equipment, communications, and safety costs compound quickly. These are not one-time expenses but recurring costs that demand steady funding year after year. By contrast, protected areas in the Atlantic Forest—closer to population centers and institutions—averaged a much smaller deficit of 27.6%.
The research uncovered a striking geographical pattern. Protected areas near cities and institutions consistently fared better financially than remote ones, regardless of ecological importance. Older reserves had smaller shortfalls, likely because they had accumulated administrative routines, support networks, and political visibility over time. Larger protected areas tended to have larger deficits. Remote Amazon reserves are politically less visible and less able to attract funding attention, even though they protect some of Earth's most crucial ecosystems.
The practical consequences of underfunding are severe. With limited resources, protected areas struggle to maintain adequate staff, conduct regular patrols, respond to fires, monitor threats, engage communities, and prevent deforestation, illegal mining, logging, and land-grabbing. A protected area without these capacities is protected only in the narrowest administrative sense—it exists on paper but not in practice.
Brazil's path forward requires more than temporary budget increases. The country needs stable, transparent, long-term financing mechanisms that cover the actual recurring costs of management. Some promising sources exist: tourism revenue, ARPA (the Amazon Fund), and rising federal environmental budgets. But these are not enough. Without a fundamental shift toward durable funding, Brazil risks seeing its greatest conservation achievement—its vast network of protected areas—eroded by underfunding, one remote reserve at a time.