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Plant density and tiller cunts were done in several Sahelian rangelands in Mali, under a variety of soil, rainfall and grazing situations. Numeric models were developed to explain the dynamic relationship between grass tillering and herb density. Tests of application of these models to the plant ...


Hiernaux, Pierre H.Y.Leeuw, P.N. deDiarra, L.[Modelling tillering of annual grasses as a function of plant density: Application to Sahelian rangelands productivity and dynamics]Modelling tillering of annual grasses as a function of plant density: Application to Sahelian rangelands productivity and dynamics

Twenty-five rangeland sites were monitored over two decades (1984–2006) first to assess the impact of the 1983–1984 droughts on fodder resources, then to better understand ecosystem functioning and dynamics. Sites are sampled along the south–north bioclimatic gradient in Gourma (Mali), within thr...


Hiernaux, Pierre H.Y.Mougin, E.Diarra, L.Soumaguel, N.Lavenu, F.Tracol, Y.Diawara, M.[Sahelian rangeland response to changes in rainfall over two decades in the Gourma region, Mali]Sahelian rangeland response to changes in rainfall over two decades in the Gourma region, Mali

This paper deals with foraging behaviour of cattle grazing semi-arid rangelands in the Sahel of Mali. It discusses the location of study site, vegetation in the grazing orbit, herd management and livestock behaviour. Results on seasonal variation in feed supply, selection of the annual grazing or...


Diarra, L.Hiernaux, Pierre H.Y.Leeuw, P.N. de[Foraging behaviour of cattle grazing semi-arid rangelands in the Sahel of Mali]Foraging behaviour of cattle grazing semi-arid rangelands in the Sahel of Mali

In the Sahelian rangelands biomass production is constrained by soil moisture in the drier (100-250 mm) parts and by soil nutrients in the wetter parts. Similarly, for a given Sahelian range, nutrient deficiency would be more prominent in good than in poor rainfall years. To test this hypothesis,...


Hiernaux, Pierre H.Y.Leeuw, P.N. deDiarra, L.[The interactive effects of rainfall, nutrient supply and defoliation on the herbage yields of Sahelian rangelands in north-east Mali]The interactive effects of rainfall, nutrient supply and defoliation on the herbage yields of Sahelian rangelands in north-east Mali

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