Community-Based Conservation: From Collecting Data to Shaping Decisions

For decades, Indigenous communities in the Peruvian Amazon lived alongside oil extraction. Oil spills and contaminated water affected the rivers, fish, wildlife and the places people depended on. But for many years, communities did not have the information or tools to understand these changes as “contamination”. In some cases, people continued eating fish and animals from contaminated areas because they did not know the risks.

I recently read about this case in Nina Swen’s research. What caught my attention was what happened as communities began to understand the problem and produce their own environmental knowledge. Monitoring gradually became much more than just collecting data.

That change did not happen all at once. As Indigenous organisations became stronger, communities learned more about environmental contamination and their rights. They began to connect what they were seeing in their territory, changes in water, fish, animals, and human health to a much bigger environmental problem. Over time, this also changed how they organised around the problem, how they engaged with others, and the role they could play in what happened next.

But recognising the problem created another question: how could they prove it?

Government agencies and oil companies worked with their own scientific standards and definitions of what counted as valid evidence. Local experience alone was often not enough to trigger official action. So Indigenous communities began developing their own monitoring systems.

Local monitors were trained to use GPS, cameras, sampling methods, and environmental regulations. They combined these tools with something they already had: a deep knowledge of their own land. In the first four years, monitors in one river basin documented 100 oil spills and 76 environmental liabilities.

Community members reviewing environmental monitoring data

Indigenous environmental monitors conducting field monitoring

But perhaps the most interesting part is what happened after the data was collected.

The findings were brought back to community assemblies. People discussed what it meant for their land and what should happen next. The evidence could then be used to shape demands for clean water, healthcare, remediation, or compensation, and monitors and Indigenous leaders could bring that knowledge into interactions with government agencies and companies.

This story raises a much bigger question for conservation today.

We often talk about community participation. We train local people. They monitor forests. They collect data. They report what they see.

This is important. But is it enough?

If communities collect the data while outside experts decide what should be monitored, interpret the results, design the strategy, and decide what happens next, we may simply create a new hierarchy. We have shared the work, but not necessarily the power that comes with knowledge.

This reflects a bigger shift in conservation thinking.

In community-based conservation, participation is moving beyond collecting data to shaping decisions. Participation is not only about who does the work. It is also about who understands and interprets the evidence, who shapes the activities and strategy, and who has a voice when decisions are made.

This does not mean that technical experts, conservation organisations or funders no longer have responsibilities. The more useful question may be where different responsibilities should sit, and how local knowledge, scientific knowledge and decision-making can work together without leaving communities only at the data-collection end of the process.

For me, it leaves one simple question for any project that calls itself community-based:

Are we sharing the work, or are we also sharing the responsibility and the power to decide?

Source: Nina Swen, “The company has brought illness to everything”: The politics of knowing contamination in the Peruvian Amazon (2026).