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In studies of 25 rangeland sites selected along the S.-N. bioclimatic gradient and on the main soil types in the Gourma (Sahel, Mali), herbage cover, standing mass and botanical composition were measured in relation to seasonality of grazing and grazing intensity. When different sites were compar...


Hiernaux, Pierre H.Y.[Spatial heterogeneity in Sahelian rangelands and resilience to drought and grazing]Spatial heterogeneity in Sahelian rangelands and resilience to drought and grazing

Describes the woody components in the African Savanna rangelands and the production of wood and grass with supporting data on number of trees & shrubs per hactare (Data from Ethiopia and Senegal); also describes the tree populations with data on woody layer and grass layer productivities in vario...


Bille, Jean-Claude[Some aspects of bush encroachment in the African rangelands]Some aspects of bush encroachment in the African rangelands

Up to the 1950s constraints of feed shortages for livestock were outweighed by those of disease, concern over looming imbalances between supply and demand of grazing resources led to large investments in projects of water Development, many of which were financed by foreign aid. This provision of ...


Leeuw, P.N. deTothill, J.C.[The concept of rangeland carrying capacity in sub-Saharan Africa - myth or reality]The concept of rangeland carrying capacity in sub-Saharan Africa - myth or reality

In southwestern Ethiopia, recent chaotic events, changes in land tenure and introduction of tsetse fly [Glossina tachinoides] control have precipitated changes in the use of land and other natural resources. In turn, these changes have initiated shifts in rangeland biodiversity. Unexpectedly, sma...


Reid, Robin S.Wilson, C.J.Kruska, R.L.[The influence of human use on rangeland biodiversity in Ghibe Valley, Ethiopia, as affected by natural resource use changes and livestock disease control]The influence of human use on rangeland biodiversity in Ghibe Valley, Ethiopia, as affected by natural resource use changes and livestock disease control
Autor: Coppock, D.L.

Ethiopia has a vast lowland area that is important for human subsistence and the national economy. This paper reviews the physical and biological features of the lowlands and some Development perspectives that have been pursued since the 1970s. As elsewhere in Ethiopia, the lowlands have growing ...


Coppock, D.L.[The arid and semiarid low lands of Ethiopia: Environments, pastoral economies and issues in natural resources sustainability]The arid and semiarid low lands of Ethiopia: Environments, pastoral economies and issues in natural resources sustainability
Autor: Swallow, B.M.

This paper presents an analytical framework for guiding studies of the use and management of natural resource systems in which: (i) several goods and services of value are produced; (ii) resource users have multiple objectives vis-a-vis collective management of the natural resource system; and (i...


Swallow, B.M.[The multiple products, functions and users of natural resource systems]The multiple products, functions and users of natural resource systems

In semi-arid sub-Saharan Africa as in many dryland areas, livestock are an integral part of the farming systems. Livestock offer opportunities for risk coping, farm diversification and intensification and provide significant livelihood benefits to the poor. The ability of livestock systems to con...


Williams, Timothy O.Thornton, Philip K.Fernández Rivera, S.[Trends and prospects for livestock systems in the semi-arid tropics of sub-Saharan Africa]Trends and prospects for livestock systems in the semi-arid tropics of sub-Saharan Africa
Autor: Coppock, D.L.

This paper reviews research on aspects of vegetation change and pastoral population dynamics in the southern Ethiopian rangelands during the 1980s and relate these findings to the debate on equilibrial versus non-equilibrial patterns of pastoral ecosystem dynamics. Examines pastoral dynamics and ...


Coppock, D.L.[Vegetation and pastoral dynamics in the southern Ethiopian rangelands: Implications for theory and management]Vegetation and pastoral dynamics in the southern Ethiopian rangelands: Implications for theory and management
Autor: Sandford, S.

Explains range administration, its objectives & sources of information; suggests a programme for information processing, priorities of importance in information and some useful techniques for collecting and analysing information; examines the influence of providing information on results, and dis...


Sandford, S.[Information systems for range administration in developing countries with special reference to Africa]Information systems for range administration in developing countries with special reference to Africa

A classification of the major ruminant livestock production systems in West Africa is proposed. The proposed typology has two major classes of systems-sole livestock and crop-livestock. The sole livestock class has two systems (rangeland-based and landless) and the crop-livestock class has three ...


Fernández Rivera, S.Okike, I.Manyong, Victor M.Williams, Timothy O.Kruska, R.L.Tarawali, Shirley A.[Classification and description of the major farming systems incorporating ruminant livestock in West Africa]Classification and description of the major farming systems incorporating ruminant livestock in West Africa

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