I checked out the orangutans in Sumatra and you can see the palm plantations encroaching into the jungle. Locals told me they consume a lot of the river water and makes the entire area warmer. Although the area had the fortune of being a natural reserve, I still saw trucks grabbing aggregate from parts of the river that were not included. Oh and if you were in SEA around 2 years ago, the ridiculous haze was from people burning wetlands to plant more palm. https://en.wikipedia.org/wiki/Southeast_Asian_haze