Sumatran Orangutans Help Regrow Entire Rainforests With Their Digestion

This ape plants forests simply by eating.

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🤯 Did You Know (click to read)

Some tropical tree species show significantly reduced regeneration rates in areas where orangutans have disappeared.

Sumatran orangutans consume over 300 types of fruit and disperse thousands of seeds across vast forest ranges. Many seeds pass through their digestive system intact and are deposited far from the parent tree. Because they travel long distances in the canopy, they act as high-altitude seed couriers. Some large-seeded tree species rely heavily on orangutans for dispersal. Without these apes, certain forest giants struggle to regenerate. Their feeding patterns therefore shape forest composition and long-term biodiversity. In ecological terms, they function as architects of the rainforest.

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💥 Impact (click to read)

Each fruiting season becomes a large-scale replanting operation carried out invisibly above the ground. The spatial distribution of trees decades later reflects where orangutans once traveled. Remove the disperser, and forest regeneration patterns shift unpredictably. This can reduce canopy density and alter habitat for countless other species. Their influence extends beyond diet into ecosystem engineering. The loss of one primate species cascades into structural forest decline.

In carbon storage terms, the trees they help spread lock away atmospheric carbon for centuries. Protecting orangutans indirectly protects climate stability by sustaining forest regeneration. Their extinction would not just erase a charismatic species; it would impair rainforest resilience. Climate change and biodiversity loss intersect through their survival. Saving them safeguards a living seed distribution network that no machine can replicate.

Source

United Nations Environment Programme

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