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Updated: Feb 16, 2026

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Collecting and Processing Drone-based Remotely Sensed Data for Use in Forest Recovery Monitoring
Published on: October 24, 2025
650
Are Brazil's Deforesters Avoiding Detection?
Peter Richards1,2, Eugenio Arima3, Leah VanWey1
1Institute at Brown for Environment and Society, Brown University, Providence, Rhode Island, USA.
Summary
Brazil
Area of Science:
- Environmental Science
- Forestry
- Conservation Science
Background:
- Brazil's official deforestation monitoring system reported dramatic declines in Amazon deforestation.
- Policy changes between 2004 and 2008 are credited with this success.
- The use of monitoring systems as a policing tool is a key policy under examination.
Purpose of the Study:
- To investigate if using Brazil's official deforestation monitoring system as a policing tool incentivizes landowners to evade detection.
- To assess the true impact of recent successes in protecting monitored Amazonian forests.
- To provide evidence on the effectiveness of current deforestation control strategies.
Main Methods:
- Analysis of official deforestation data from Brazil's monitoring system.
- Examination of policy changes implemented between 2004 and 2008.
- Collection of evidence on landowner behavior and deforestation patterns outside monitored areas.
Main Results:
- Evidence suggests landowners are deforesting in ways and places designed to evade the official monitoring and enforcement system.
- Successes in monitored areas may not reflect the overall protection of the Brazilian Amazon's forests.
- The policing of deforestation may be driving the activity to less visible locations.
Conclusions:
- The reliance on official monitoring as a policing tool may create blind spots in conservation efforts.
- Recent reported successes in reducing deforestation may overstate the actual conservation gains.
- Further research is needed to understand and address evasion tactics in forest protection policies.
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