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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

ERS wind scatterometer (WSC) and SSNI/I data are compared for monitoring the seasonal variation of herbaceous vegetation over a sahelian region. Temporal evolution of polarization difference brightness temperatures derived from SSM/I data and WSC backscattering coefficient acquired at 45° of inci...


Frison, P.L.Mougin, E.Jarlan, L.Karam, M.A.Hiernaux, Pierre H.Y.[Comparison of ERS wind-scatterometer and SSM/I data for Sahelian vegetation monitoring]Comparison of ERS wind-scatterometer and SSM/I data for Sahelian vegetation monitoring

More effective control of the tsetse fly in Africa will reduce constraints imposed by the livestock disease, trypanosomiasis. Trypanosomiasis lowers livestock productivity, and in some areas, may limit the ability of farmers to keep livestock and plough the land using animal traction. Control of ...


Reid, Robin S.Wilson, C.J.Kruska, R.L.Mulatu, W.[Impacts of tsetse control and land-use on vegetative structure and tree species composition in south-western Ethiopia]Impacts of tsetse control and land-use on vegetative structure and tree species composition in south-western Ethiopia

The resilience of rangeland soils and vegetation to different levels of grazing is still poorly understood. A study was conducted to determine the recovery of a rangeland grazed at different intensities and allowed a two-year rest period. The following treatments were applied to 0.5 hectare plots...


Mworia, J.K.Mnene, W.N.Musembi, D.K.Reid, Robin S.[Resilience of soils and vegetation subjected to different grazing intensities in a semi-arid rangeland of Kenya]Resilience of soils and vegetation subjected to different grazing intensities in a semi-arid rangeland of Kenya
Kruska, R.L.Perry, Brian D.[Evaluation of grazing lands of Zimbabwe using AVHRR normalised difference vegetation index]Evaluation of grazing lands of Zimbabwe using AVHRR normalised difference vegetation index

Sample sites of 'brousse tigree' and related vegetation types are described for Mali and Niger. Species composition and physical structure of the herbaceous layer as well as woody plant population were recorded at all sites together with data on soils and natural resource management. Herbage yiel...


Hiernaux, Pierre H.Y.Gerard, Bruno G.[The influence of vegetation pattern on the productivity, diversity and stability of vegetation: The case of 'brousse tigree' in the Sahel]The influence of vegetation pattern on the productivity, diversity and stability of vegetation: The case of 'brousse tigree' in the Sahel
Finlayson, C. MaxMcInnes, R.J.Noble, I.R.McCartney, Matthew P.Lachassagne, P.[How can water have a positive impact on climate change?. Book of Knowledge]How can water have a positive impact on climate change?. Book of Knowledge

Few field studies examine greenhouse gas (GHG) emissions from African agricultural systems resulting in high uncertainty for national inventories. We provide here the most comprehensive study in Africa to date, examining annual CO2, CH4 and N2O emissions from 59 plots, across different vegetation...


Pelster, David E.Rufino, Mariana C.Rosenstock, Todd S.Mango, JoashSaiz, G.Díaz Pinés, EugenioBaldi, G.Butterbach-Bahl, Klaus[Smallholder African farms in western Kenya have limited greenhouse gas fluxes]Smallholder African farms in western Kenya have limited greenhouse gas fluxes
Autor: Milligan, K.

Rapport sur le mode de repartition animale et humaine dans le Gourma malien en saison seche decrivant quelques resultats preliminaires de vues aeriennes a basse altitude prises au dessus du Gourma couvrant 83.300 km2 et constituant la base d'une analyse future.


Milligan, K.[Mode de repartition animale et humaine dans le Gourma du Mali en saison seche (rapport preliminaire, etude exploratoire)]Mode de repartition animale et humaine dans le Gourma du Mali en saison seche (rapport preliminaire, etude exploratoire)

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