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Identifies interrelationships between modifications of the environment and the growth of Nigeria's population and consequent agricultural expansion in the subhumid zone resulting in the disappearance of habitats & hosts of tsetse. Discusses impacts of these changes in the distribution of the nati...


Bourn, D.M.Milligan, K.Wint, W.[Tsetse, trypanosomiasis and cattle in a changing environment]Tsetse, trypanosomiasis and cattle in a changing environment

Discusses how low level aerial survey can be used to diagnose constraints within pastoral systems and the relative cost effectiveness of such operations, with particular reference to flight & sample procedures and information collection and analysis; presents some results from low-altitutde aeria...


Milligan, K.Leeuw, P.N. de[Low altitude aerial surveys in pastoral systems research]Low altitude aerial surveys in pastoral systems research

Reviews most recent applications of methodologies for resource surveys appropriate to pastoral & agro-pastoral regions in Africa, with particular reference to remote sensing methodologies, viz. satellite imagery, aerial photography, side-looking radar (SLR), spectral radiance and low-altitutde ae...


Leeuw, P.N. deMilligan, K.[Integration of remote sensing techniques for resource evaluation in pastoral systems research]Integration of remote sensing techniques for resource evaluation in pastoral systems research

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