Table 2. Potential for each market sector of payment for ecosystem services to benefit low-income households and communities in developing countries within the next two decades.†   Buyer Ecosystem service Public sector Private, regulated Private, voluntary Consumers of eco-certified products Biodiversity conservation XX XXX XX XXX Watershed protection XXXX XX XX X Carbon X XXXX XXX X Landscape beauty or recreation XX 0 XXX X †These are not predictions, but rather estimates of the number of low-income people that each market sector could benefit if the identified actions necessary to shape payment for ecosystem services to benefit low-income stakeholders are largely successful. XXXX – Tens of millions of low-income providers could benefit. XXX – Millions of low-income providers could benefit. XX – Hundreds of thousands of low-income providers could benefit. X – Fewer than 100,000 low-income providers are likely to benefit. 0 – The sector is unlikely to develop or will affect only a few low-income providers.