Abstract:
We have a poor understanding of the ecology
of many African small mammals due to a lack of basic
research. This has important conservation implications,
particularly for range-restricted species in tropical
regions. In this study, we provide new insight into the
distribution and ecology of one such species, the Nimba
otter-shrew (Micropotamogale lamottei Heim de Balsac
1954). We apply niche and occupancy modeling to inform
on the range and habitat use of this semi-aquatic species.
We estimate that its global range [extent of occurrence
(EOO)] is 14,725 km2. Using occupancy modeling, we
show that mining has a direct impact on the occurrence
of this species. We also provide preliminary observations
of its movements through radio-tracking. Using maximum
entropy (Maxent) modeling, we identify the North Lorma
National Forest and the Wonegizi range (northern Liberia)
that appear suitable for this species, but where it has not
yet been recorded. We suggest that the Nimba otter-shrew
has a global distribution centered on the Mount Nimba
region, straddling the borders of Liberia, Guinea and Côte
d’Ivoire, and that it requires urgent conservation attention
to ensure its long-term persistence. Finally, we provide
evidence to support an uplisting of its IUCN Red List conservation
status to Vulnerable.
