Environmental hydro-refugia demonstrated by vegetation vigour in the Okavango Delta, Botswana

The Okavango Delta, Botswana, acts as a regional hydro-refugium, buffering vegetation response to decadal climate shifts due to its unique geohydrology. This is demonstrated through the stability of vegetation vigour within the delta compared to surrounding areas, using time-series data from MODIS images. The study highlights how rift basins with appropriate hydrological conditions can mitigate environmental impacts, offering insights into regional climate resilience and attracting fauna, including early human ancestors. This work underscores the unique properties of such basins in regions like eastern Africa, providing a new perspective on their ecological significance.

Reynolds, S. C., Marston, C. G., Hassani, H., King, G. C. P., & Bennett, M. R. (2016). Environmental hydro-refugia demonstrated by vegetation vigour in the Okavango Delta, Botswana. Scientific Reports, 6(1). https://doi.org/10.1038/srep35951