Hello - you may have seen this publication, can download as pdf "Afar National Regional State Climate Change Adaptation prog"📷Dadino Dango, " "Afar National Regional State Programme of Plan on Adaptation to Climate Change" - not much on Acacia species though. Same for the brandnew article:

"Indigenous weather and climate forecasting knowledge among Afar pastoralists of north eastern Ethiopia: Role in adaptation to weather and climate variability"

• December 2019📷Mulubrhan Balehegn📷Selam Balehey📷Chao Fu📷Liang Wu
• There is an ecological interdisciplinary investigation of the impact of severe drought in the Sahel in mid of 1970, it has all important ecological parameters investigated (precipitation, temperature etc) and how this affect the various species of Acacia, eg. the "Neem tree". It is not specific to Ethiopia - and it is in German! But if you let me know which Acacia species and which ecological parameters you are interested in then I may be able to help by translating the relevant sections... Just let me know.
• That book is: „Nach der Dürre – Die Zukunft des Sahel“, Heinrich Schiffers und Mitarbeiter. IFO-Institut für Wirtschaftsforschung München, Afrika-Studien 94. Weltforum Verlag München, 1976. ISBN 3-8039-0139-1
• Best regards, Lorenz Huebner

Hello Mohammed,

You may check:

⦁ Workie & Debella 2018. Climate change and its effects on vegetation phenology across ecoregions of Ethiopia. Global Ecology and Conservation 13: e00366.

⦁ Gebrekirstos et al. 2008. Climate – growth relationships of the dominant tree species from semi-arid savanna woodland in Ethiopia. Trees 22: 631–641

⦁ Eshete & Ståhl 1999. Tree rings as indicators of growthperiodicity of acacias in the Rift Valley of Ethiopia. Forest Ecology Management 116: 107–117.

Best wishes,

Mike Reich

You can also look at modeling papers