“In the Sahel, livestock rearing is practised by over 20 million pastoralists and is a crucial adaptation strategy in the region’s harsh climate. The sector is changing rapidly in response to globalization, population increase, demand for livestock products, and climate change. Further to these challenges, the sector is facing shrinking grazing zones and partitioning of grazing land into small, privately owned plots, forcing pastoralists to move their animals, either domestically within their countries seasonally or cross-border from one country to another, in search of pastures and water.”
https://worldagroforestry.org/blog/2021/12/14/livestock-and-ecosystems-sahel-good-bad-and-ugly