One of the most endangered subspecies of great is the Nigerian Cameroon chimpanzee. Currently between 3500 and 9000 of these chimpanzees remain in the wild. As with most other primate threatened species the reason for the problem is the reduction in the amount of habitat they have: their forest has been cut down.
The fact that there is such a wide range in estimates of the wild population shows the lack of research into this subspecies, as with many others we are severely endangering wild populations before we even know much about them.
Much of the trespassing into this reserve is for marijuana cultivation. Generally these reserves are setup to carefully manage resources rather than to specifically protect them from destruction, so the upgrading of this protected area should be very good for its future management. As in other national parks while the the chimpanzees are the flagship species that is being protected the fact that the forest they live in will not be cut down me and the saving of many other species that share the same ecosystem.
A survey of a neighbouring States forest reserves last year suggested a 60% reduction in the chimpanzee numbers since the year 2000. This is clearly unsustainable, and given the slow reproduction of chimpanzees it could take a long time to get back to where it was assuming all pressures on this population stop now.
There is already firm moves to to get the agreement from the community surrounding the park so that they can be employed as eco guards. However if well managed and sensible facilities are put in place this could be be the means of improving the standard of living for all these communities in a relatively short period of time. Sustainable tourism could bring in useful funds for the Protection of this forest and the people who rely on it.