Updated information on Critically Endangered western chimpanzees (Pan troglodytes verus) in Senegal is urgently needed, given that gold mining is rapidly transforming landscapes and livelihoods. Specifically, biodiversity assessments will better elucidate the chimpanzee extinction risk here and yield baselines for monitoring. We compared mammal species richness between Fongoli (unprotected) and Assirik in Niokolo-Koba National Park to assess the efficacy of the only nationally protected area where chimpanzees range in this country. The primary habitat difference between these sites was the degree of human activity. Although Assirik and Fongoli had similar mammal assemblages and were equivalent in primate species richness, the protected area was higher in species richness overall, particularly for ungulates and carnivores. The protected status and management plan of Niokolo-Koba almost certainly resulted in fewer mammal extinctions. In unprotected areas, the flexible behavioural responses of chimpanzees to human-driven landscape dynamics is likely essential to their long-term survival. Furthermore, the near absence of chimpanzee killings in this country greatly facilitates conservation efforts. Given that mineral extraction is a key development strategy in Senegal, we encourage primatologists to collaborate with mining stakeholders to ensure that sustainability programming includes contributions from experts in savannah chimpanzee behavior and ecology.

Keywords:
Savannah chimpanzees, Gold mining, Great ape conservation, Protected areas
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