Diversity, distribution and conservation of land mammals in Mauritania, North-West Africa Brito, José Carlos Pleguezuelos Gómez, Juan Manuel Funding: National Geographic Society (CRE-7629- 04, CRE-8412-08, GEFNE-53-12, NGS-53336R- 19), Mohammed bin Zayed Species Conservation Fund (11052709, 11052707, 13257467), Rufford Foundation (SG-15399-1, SG-36007-1), Fundação para a Ciência e Tecnologia (PTDC/BIA-BEC/ 099934/2008, PTDC/BIA-BIC/118624/2010, PTDC/ BIA-BIC/2903/2012, PTDC/BIA-ECO/28158/2017), FEDER-Operational Programme for Competitiveness Factors - COMPETE (FCOMP-01- 0124-FEDER-008917/028276). Individual support was given by Fundação para a Ciência e Tecnologia (CEECINST/00014/2018/CP1512/CT0001, SFRH/ 2020.05054.BD, DL57/2016/CP1440/CT0010, DL57/2016/CP1440/CT0008, DL57/2016/CP1440/ CT[SFRH/BPD/88496/2012], CEECIND/01937/ 2017, SFRH/BPD/84822/2012). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. Work supported by National Funds through FCT-Fundação para a Ciência e a Tecnologia in the scope of the project UIDB/50027/ 2020. Detailed knowledge about biodiversity distribution is critical for monitoring the biological effects of global change processes. Biodiversity knowledge gaps hamper the monitoring of conservation trends and they are especially evident in the desert biome. Mauritania constitutes a remarkable example on how remoteness and regional insecurity affect current knowledge gaps. Mammals remain one of the least studied groups in this country, without a concerted species checklist, the mapping of regions concentrating mammal diversity, or a national assessment of their conservation status. This work assessed the diversity, distribution, and conservation of land mammals in Mauritania. A total of 6,718 published and original observations were assembled in a spatial database and used to update the occurrence status, distribution area, and conservation status. The updated taxonomic list comprises 107 species, including 93 extant, 12 Regionally Extinct, and 2 Extinct in the Wild. Mapping of species distributions allowed locating concentrations of extant mammal species richness in coastal areas, along the Senegal River valley, and in mountain plateaus. Recent regional extinction of large-sized Artiodactyla and Carnivora has been very high (11% extinct species). From the extant mammals, 11% are threatened, including flagship species (e.g., Addax nasomaculatus and Panthera pardus). Species richness is poorly represented by the current protected areas. Despite the strong advances made, 23% of species categorise as Data Deficient. Persisting systematics and distribution uncertainties require further research. Field surveys in currently unexplored areas (northern and south-eastern regions) are urgently needed to increase knowledge about threatened mammals. The long-term conservation of land mammals in Mauritania is embedded in a complex web of socioeconomic and environmental factors that call for collaborative action and investment in sustainable human development. The current work sets the baseline for the future development of detailed research studies and to address the general challenges faced by mammals and biodiversity in the country. 2022-09-26T07:56:20Z 2022-09-26T07:56:20Z 2022-08-01 journal article Brito JC, Sow AS, Vale CG, Pizzigalli C, Hamidou D, Gonc¸alves DV, et al. (2022) Diversity, distribution and conservation of land mammals in Mauritania, North-West Africa. PLoS ONE 17(8): e0269870. [https://doi.org/10.1371/journal.pone.0269870] https://hdl.handle.net/10481/76956 10.1371/journal.pone.0269870 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional Public Library of Science