Sumatran orangutan. Credit: Greg Hume

About the Orangutan Habitat ReLeaf Project:

American Forests and the Sumatra Rainforest Institute (SRI) are reforesting 140 acres of degraded Sumatran orangutan habitat in the Batang Toru forest.

Global ReLeaf provides forests like this — and the communities that depend on them — with the restoration they need to thrive. Since 1990, American Forests has brought ReLeaf to forests in all 50 states and 45 countries, planting more than 45 million trees in the process.

ReLeaf Location:

Batang Toru Forest Region, North Sumatra, Indonesia

Key ReLeaf Activities:

  • Planting more than 35,000 trees across 140 acres
  • Establishing tree seedling nursery centers to be managed by local village groups
  • Restoring habitat for the Sumatran orangutan, a keystone species
  • Raising community awareness about Sumatran orangutan conservation efforts

Why This ReLeaf Project?

This project is increasing the ecological quality of Sumatran Orangutan Habitat in the Batang Toru forest region, particularly in the Dolok Sibual Buali Nature Reserve, to provide feeding, nesting and breeding areas for the Sumatran orangutan, a critically endangered species.

The orangutan’s habitat is threatened by illegal logging, and poaching also poses a serious threat to these primates’ survival. Reforesting in the Dolok Sibual Buali Nature Reserve is helping to secure land where these animals can thrive.

Why Orangutans?

Orangutans are a keystone species, meaning that other species — and the ecosystem at large — depend on them. They are an important seed disperser, eating a wide variety of fruit and helping their seeds spread. They also help trim the trees when they make nests or eat leaves, opening gaps in the canopy which allow sunlight to penetrate. Threats to the orangutan population will have far-reaching consequences on the ecosystem.

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