Both share a similar species composition, although trees in montane keranga forests are smaller.

[6] Most of the reserve consists of lower montane old-growth forest, of which the most dominant tree family is Fagaceae.

[1] The tree species Chionanthus kinabaluensis was assessed as Vulnerable by the IUCN in 2020 due to its only being found in Tenompok.

[5] Tenompok Forest Reserve is home to animals including barking deer, gibbon and other primate species.

19 endemic moth species, including Asota kinabaluensis and Auriculoceryx pterodactyliformis, have been surveyed.