Editing Okavango Delta (section)

===Salt islands===
The agglomeration of salt around plant roots leads to barren white patches in the centre of many of the thousands of islands, which have become too salty to support plants, aside from the odd salt-resistant [[Arecaceae|palm tree]]. Trees and grasses grow in the sand around the edges of the islands that have not become too salty yet.

About 70% of the islands began as [[termite]] mounds (often ''[[Macrotermes]]'' spp.), where a tree then takes root on the mound of soil.<ref>{{Cite web |title=Nature explored:Moremi/Okavango Delta in August |url=http://www.nature-explored.com/moremi-okavango-august.htm |last=Dunford |first=Chris |access-date=29 May 2020 |archive-date=20 January 2022 |archive-url=https://web.archive.org/web/20220120055602/http://www.nature-explored.com/moremi-okavango-august.htm |url-status=live }}</ref>