Niokolo-Koba 50-Year Supplementary Dataset: Species, Climate, Demographics, and Land Use Context for the NK-Badiar Transboundary Complex

Version 2: Fact-checked and corrected. 23 structured JSON files covering 1,608 vertebrate and plant species, 50-year climate timeseries, demographic pressure, deforestation, mining economics, agricultural expansion, enforcement data, UNESCO decision history, and water/hydrology for the Niokolo-Koba / Badiar transboundary complex (Senegal/Guinea). Corrections from v1: lion population 29-50 (was ~30), species total 1,608 (was 1,670), wild dog range 1-of-13 W. African countries (was 0), range loss ~93% IUCN-cited (was 93.5% internal metric), mercury 3.9t/yr Kedougou-Gambia basin (was 5.2t total), fish species Enteromius niokoloensis (was Barbus). All data from free public APIs: GBIF, IUCN, ERA5, World Bank, GFW, FishBase, UNESCO WHC, Panthera.