The Malaysian Nature Society began in 1940 with the purpose of conserving natural flora and fauna in Malaysia and Singapore.  Most of the staff are volunteers, although there are a few paid members that are working on a database of organisms.  The group has several concerns about the impact of more visitors to Taman Negara.
 

• In the 1960's it was common to see tigers and even elephants in the park headquarters at Kuala Tahan. Today sightings are rare and the effective animal habitat area of the park has decreased.  Trails around the park headquarters are up to four meters wide and suffer from erosion due to the number of walkers.  For example, when hiking to the canopy walkway or Bukit Teresek, the trail is more of a dirt road than a trail.
• Trash is everywhere along the trails and rivers
• Lack of government funding and understaffing means that the remoter parts of the park are largely beyond the control of the Wildlife Department. Taman Negara is home to perhaps 600 elephants and a large number of tigers, which are increasingly being pushed toward the outer borders.  No one really knows how many animals are in the park or where they are because no monitoring of the numbers is occurring.
• Poachers, attracted by the illicit trade in rare species and the high price of ivory and tiger bones, enter the park from the north.  Poaching is larglely blamed on the Thais, but it is difficult to catch any of the poachers.
• When animals leave the park boundaries,they are encountering large settled areas. People are frightened of the carnivores and often kill them.
• Rather than make it easier for more people to enter the park, it seems better for the species if a quota system in employed. If a maximum number of people are allowed permits each day, there will be less impact on the trails, the animals and the neighbors. Other sensitive park areas, such as the Galapagos Islands in Ecuador,have a similar quota system.