African elephants ingest substances which are rich in sodium. High sodium levels in available water also attract elephants. Overall distribution of elephants is controlled primarily by game park managers. It is suggested that manipulation of the sodium variable may be a useful tool in development of more efficient management schema.
Wheelock, N. D. (1980). Environmental Sodium as a Factor in the Behavior and Distribution of African Elephants. Elephant, 1(4), 169-177. Doi: 10.22237/elephant/1521731760