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Library ResourceJournal Articles & BooksDecember, 2018Algeria, Burkina Faso, Nigeria, Mauritania, Mali, Ethiopia, Eritrea, Cameroon, South Sudan, Central African Republic, Senegal, Chad, Niger, Sudan
Library ResourceJournal Articles & BooksOctober, 2018Algeria, Egypt, Benin, Nigeria, Ethiopia, Niger, Eritrea, Libya, Somalia, Cameroon, Senegal, Chad, Burkina Faso, Mauritania, Mali, Djibouti, Kenya, Morocco, Tunisia, South Sudan, Sudan, Africa
Pastoral livestock production is crucial to the livelihoods and the economy of Africa’s semiarid regions. It developed 7,000 years ago in response to long-tern climate change. It spread throughout Northern Africa as an adaptation to the rapidly changing and increasingly unpredictable arid climate. It is practiced in an area representing 43% of Africa’s land mass in the different regions of Africa, and in some regions it represents the dominant livelihoods system.
Library ResourcePeer-reviewed publicationDecember, 2014Algeria, Sudan, Burkina Faso, Nigeria, Mauritania, Chad, Mali, Cameroon, Senegal, Central African Republic, South Sudan, Ethiopia, Niger, Eritrea, Africa
Crown diameter and tree density were measured in 52 communities in the Sudan-Sahel using satellite imagery to determine the relationships between rainfall and distance from community center to crown size diameter and tree density. As distance from the community center increased, tree density and crown diameter decreased. As rainfall increased, tree density decreased while crown diameter increased. Distance from the community center is a proxy for age since urbanization and our results indicate that older parts of communities show longer and more consistent tree management.
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