Sumatra is being used by the logging and palm oil Companies which is causing devastation to all the wildlife. The Sumatran Tiger and Sumatran Elephant are already on the Critical List and could well go extinct. To allow Aceh to be open for logging will bring these extinctions sooner. Please read the following article for more information.
http://www.smh.com.au/environment/animals/extinction-risk-as-aceh-opens-forests-for-logging-20130114-2cpmr.html