Protected and Conserved Areas (PCA)

In Atlas Amazon, Protected and Conserved Areas (PCA) are areas tied to long-term biodiversity conservation through legal designation, effective governance, or conservation-oriented policy instruments. PCA is one of the two primary Area Types in the Atlas, alongside Collective Lands.

The category is deliberately broad. It covers areas formally recognized within protected area systems, areas reported or potentially reportable as Other Effective Area-Based Conservation Measures (OECMs), and a wider set of conservation instruments that contribute to biodiversity protection and ecosystem function.

Defining PCA

The Atlas builds on widely used international definitions and adapts them for analytical use. Protected Planet and IUCN define protected areas as clearly defined geographical spaces, recognized and managed to achieve long-term conservation of nature; OECMs are areas that achieve effective and sustained conservation outcomes even when conservation is not the primary objective.

On that basis, a PCA in the Atlas is an area that is geographically defined, associated with long-term conservation outcomes, governed through legal, institutional, or other effective means, and relevant for conservation analysis and comparison.

The Atlas then extends the definition one step further, to include conservation-oriented instruments that influence ecological outcomes even when they are never formally reported.

Classes

PCA is organized into three classes.

Protected Areas

Legally designated areas established primarily for conservation and commonly reported in national and global systems.

OECMs

Other Effective Area-Based Conservation Measures (OECMs) are areas that achieve sustained conservation outcomes, even when conservation is not the primary objective.

Conservation Instruments

Policy or programmatic mechanisms that contribute to conservation outcomes but may not meet the formal criteria of protected areas or OECMs.

Governance Diversity

PCA are often assumed to be state-led, but in practice they span four governance arrangements.

Which arrangement applies matters, because governance strongly influences management effectiveness, equity, and long-term outcomes.

Function

PCA contribute to conservation along several pathways, and rarely only one: ecosystem protection, freshwater regulation, landscape connectivity, species conservation, restoration or sustainable use, and conservation incentives.

These roles are recorded through metadata such as IUCN category, instrument function, and reporting status — see Conservation Context.

Global Reporting

Many PCA are also recorded in global conservation databases, and the Atlas is designed to sit alongside rather than duplicate them.

Including that last group is what makes for a more complete and up-to-date picture of conservation systems in the region.

PCA in the Atlas

Within the platform, each PCA is mapped as a spatial area, classified using the taxonomy, linked to governance and designation metadata, connected to assessments such as PAME, and integrated with regional datasets to generate indicators.

Relationship to Collective Lands

PCA and Collective Lands are the two primary area types, but the boundary between them is not clean. Protected areas may be co-managed with Indigenous peoples, Indigenous territories may be recognized as OECMs or protected areas, and conservation instruments may apply within collective lands.

The Atlas keeps the distinction for analytical clarity while allowing these overlaps to be represented rather than forced into one category.

Why this Matters

Holding protected areas, OECMs, and conservation instruments within a single framework reflects a broader understanding of what conservation in the Amazon actually consists of — one that recognizes that outcomes are shaped not only by formally designated protected areas, but by a wider range of governance systems and policy instruments operating across landscapes.