April 1, 2026
April 1, 2026

Interview with Erik Meijaard: Bridging the Gap: How Citizen Science Can Strengthen HCV Implementation

Earlier this year, Erik Meijaard—a conservation scientist best known for his work on orangutans and tropical land use, and a professor at University of Kent - published new research on citizen science. In addition to his academic role, Erik has contributed to the HCV Network (HCVN) as both an assessor and a Quality Panel Member.

To highlight his work, we spoke with Erik about how citizen science can strengthen HCV assessments, monitoring, and management.

Could you share your role and current focus, and how these connect to the HCV approach?

I was involved early in developing the HCV approach, including contributing to the first Indonesian HCV Toolkit. Between 2007 and 2009, I conducted several HCV assessments in timber concessions and plantation companies in Indonesia.

Since then, I’ve worked closely with palm oil companies, including 14 years as a biodiversity advisor to Austindo Nusantara Jaya. Through this work, I’ve seen firsthand the challenges managers face in implementing biodiversity management.

A key issue is the gap between HCV recommendations and on-the-ground implementation. Many HCV reports end up unused because estate managers often lack biodiversity expertise and struggle to integrate recommendations into operational planning and budgets. As a result, management actions are often minimal—such as installing signboards—while adaptive management rarely happens due to lack of data.

Effective biodiversity management requires quantitative data—for example, whether orangutan populations are increasing or declining. However, collecting such data is expensive, and most companies rely only on species lists, which are insufficient for management decisions.

Citizen science offers a solution. Our multi-year pilots show that company workers and smallholders can collect large volumes of wildlife data at low cost. This not only generates valuable datasets but also builds strong engagement, as thousands of workers contribute to biodiversity monitoring.

How can citizen science help address gaps in biodiversity data for HCV monitoring?

Citizen science enables continuous, large-scale data collection. In one project with Austindo Nusantara Jaya, nearly 200,000 wildlife observations were recorded across hundreds of species, contributed by around 4,000 workers.

Using a mobile app, workers submit observations that are stored in a centralized database, enabling near real-time analysis. Companies can then answer key questions such as:

  • Where are species most frequently found?
  • Are species distributions increasing or decreasing?
  • How do pest populations respond to natural predators?

Traditionally, such analyses rely on external experts visiting once a year. Citizen science allows companies to access up-to-date insights at any time, supporting adaptive management.

Which HCV types are best suited for citizen science monitoring?

So far, we’ve focused on wildlife, particularly threatened species and agricultural pests. However, there is strong potential to expand into cultural values.

For example, communities can record culturally significant sites or features—such as sacred trees or burial grounds—using mobile apps with geotagging. Frequently reported locations naturally emerge as high-value areas.

Citizen science also has potential for ecological monitoring, such as water quality or soil biodiversity. The key is simplicity: it works best for observable and easily identifiable features like birds, mammals, or landscape elements. Highly specialized studies—such as identifying rare insects requiring expert analysis—remain better suited to specialists.

What are the biggest weaknesses in current biodiversity monitoring, and how can citizen science help?

The biggest weakness is the lack of quantitative data needed to understand trends. It’s not enough to map HCV areas and label them—effective management requires knowing whether conditions are improving or deteriorating.

Take orangutans as an example. Research shows they use broader landscapes, including oil palm areas, not just forest patches. Managing them effectively requires landscape-level data, which is difficult to obtain through traditional methods.

Citizen science provides a practical way to gather this data by involving everyone working in the landscape.

How can citizen science improve assessment of HCV 5 and 6 (community needs and cultural values)?

We are developing approaches for communities to record ecological and cultural resource use—for example, documenting medicinal plants, their locations, and uses via mobile apps.

This creates a spatial database of landscape use that evolves over time. Frequently reported locations gain higher importance, reflecting real community values.

Traditional HCV assessments rely on limited consultations, which capture only a snapshot of local knowledge. Citizen science enables continuous, participatory data collection, providing a much richer and more dynamic understanding of HCV 5 and 6.

What are key lessons and common pitfalls in implementing citizen science?

Citizen science has the potential to partially replace traditional HCV assessments. Instead of relying solely on short expert visits, communities could collect data over several months, forming a stronger foundation for assessments.

However, implementation takes time. Key challenges include:

  • Ensuring participants understand the purpose and benefits
  • Providing clear incentives
  • Offering feedback on how data is used
  • Building familiarity with tools and processes

Pilot projects are essential to refine these systems and ensure they align with HCV frameworks while remaining cost-effective.

What would you like to see in the future of HCV implementation?

Citizen science can significantly improve integration across HCV assessment, monitoring, and management.

Currently, these stages are often disconnected:

  • Assessment by external experts
  • Monitoring by specialists
  • Management by companies

Citizen science bridges these gaps by involving the same stakeholders throughout the process. This leads to better data, stronger ownership, and more effective management.

The tools already exist—it’s now time to integrate citizen science fully into HCV practice.

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