What happened
Failure on the stated objective. The trial detected no improvement in its main forest-use index. Forest loss increased in unmonitored areas relative to controls, consistent with some extraction moving outside the monitored boundary, although displacement is not the only possible explanation. Across a broader six-country study including this trial, monitoring produced modest average benefits, so the Ugandan result differed from the pooled result.
- The trial randomized monitoring across 110 villages and combined ground measurements with satellite observations. Can community monitoring save the commons? Evidence on forest use and displacement
- The main forest-use index showed no treatment effect, while unmonitored areas near treatment and neighboring villages experienced relative increases in forest loss. Can community monitoring save the commons? Evidence on forest use and displacement
- A harmonized six-country study, which includes the Uganda experiment, found modest average improvements in resource use, knowledge, and satisfaction across settings. Adoption of community monitoring improves common pool resource management across contexts
What might explain it
Plausible
Fear of sanctions may have shifted some extraction beyond monitored boundaries instead of reducing demand. Can community monitoring save the commons? Evidence on forest use and displacement
Alternative explanation: Other changes affecting unmonitored areas could have contributed to the increase. Random assignment identifies effects of the intervention more clearly than it identifies why forest loss shifted.
Plausible
Monitoring works differently when users can move pressure to nearby unobserved resources. Can community monitoring save the commons? Evidence on forest use and displacement Adoption of community monitoring improves common pool resource management across contexts
Alternative explanation: Differences in implementation, resource type, authority, or incentives may explain cross-site variation rather than spatial leakage alone.
Understanding the outcome
Commons monitoring as a testable institutional component; spillover and displacement effects
A design condition can have conditional effects, and local improvement is not equivalent to net environmental improvement. Can community monitoring save the commons? Evidence on forest use and displacement Adoption of community monitoring improves common pool resource management across contexts
The trial tests a particular externally supported monitoring intervention, not a complete long-standing commons institution.
Questions to take into practice
- An intervention's environmental effects can extend beyond the area where it operates; observing only the monitored forest would miss part of this result.
- Installing a monitoring arrangement and reducing total extraction are different achievements.
- Nearby unmonitored resources can become attractive when the risks or costs of extraction rise inside the monitored area.
What remains uncertain
- Whether the increase outside monitored areas reflected displaced extraction, other behavioral changes, or additional local factors remains uncertain.
- The durability of the effects after the trial and their consequences for households dependent on forest resources remain unresolved.