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Book 1981

Autor: Smith, G.E.J.

Discusses the choice of sampling design for low-level aerial surveys, with particular reference to stratification and the choice between systematic and random sampling.

Enlace original: https://cgspace.cgiar.org/handle/10568/4220

Investigación en Agricultura
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Smith, G.E.J. ,  [Some thoughts on sampling design] ,  Some thoughts on sampling design
Working Paper 1986

Autor: Wagenaar, K.T. Ridder, N.A. de

Presents the results of the National Oceanographic and Atmospheric Administration (NOAA) satellite calibration exercise obtained during the 1985 rainfall season field work as undertaken in the context of the Niger/USAID Tufts university/ILCA contract. Includes theoretical background of radio-refl...

Enlace original: https://cgspace.cgiar.org/handle/10568/4461

Investigación en Agricultura
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Wagenaar, K.T. ,  Ridder, N.A. de ,  [Estimates of biomass production and distribution in the ILP project zone in 1985 based on satellite NDVI values.] ,  Estimates of biomass production and distribution in the ILP project zone in 1985 based on satellite NDVI values.
Conference Paper 1981

Autor: Watson, R.M. Tippet, C.I.

Describes methods of assessing spotting or sighting bias in low-level aerial observations, with emphasis on an approach based on a static model sampling strip; includes data on the relative advantages of counting through perspex or open windows, and the efficiency of pilot/observers in comparison...

Enlace original: https://cgspace.cgiar.org/handle/10568/4635

Investigación en Agricultura
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Watson, R.M. ,  Tippet, C.I. ,  [The static model sampling strip for investigating observer bias in aerial surveys] ,  The static model sampling strip for investigating observer bias in aerial surveys
Conference Paper 1981

Autor: Gwynne, M.D. Croze, H.

Discusses the beginnings & developments of light aircraft survey approaches in Eastern Africa and elsewhere for animal census, habitat & ecological data collecting; mentioning techniques being currently developed & applied to situations & zones of the world, and the need for a standardized survey...

Enlace original: https://cgspace.cgiar.org/handle/10568/4634

Investigación en Agricultura
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Gwynne, M.D. ,  Croze, H. ,  [Light aircraft and resource monitoring] ,  Light aircraft and resource monitoring
Report 1983

Autor: Milligan, K.

Presents results of the first of a series of aerial reconnaissance surveys carried out by a joint ILCA/RDP team in the Southern Ethiopian rangelands, to count & map the distribution of livestock & Borana pastoralists as well as variations in rangeland & water conditions during the four main clima...

Enlace original: https://cgspace.cgiar.org/handle/10568/4678

Investigación en Agricultura
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Milligan, K. ,  [An aerial reconnaissance of livestock and human populations in relation to land use and ecological conditions in the SORDU project area of southern Ethiopia] ,  An aerial reconnaissance of livestock and human populations in relation to land use and ecological conditions in the SORDU project area of southern Ethiopia
Report 1986

Autor: Wagenaar, K.T. Ridder, N.A. de

Presents the results of the National Oceanographic and Atmospheric Administration (NOAA) satellite calibration exercise obtained during the 1985 rainfall season field work as undertaken in the context of the Niger/USAID Tufts university/ILCA contract. Includes theoretical background of radio-refl...

Enlace original: https://cgspace.cgiar.org/handle/10568/11099

Investigación en Agricultura
Enlace permanente
Wagenaar, K.T. ,  Ridder, N.A. de ,  [Estimations de la production et de la distribution de la biomasse dans la zone de projet PEI en 1985 d'apres les valeurs NDVI obtenues par satellite] ,  Estimations de la production et de la distribution de la biomasse dans la zone de projet PEI en 1985 d'apres les valeurs NDVI obtenues par satellite
Working Paper 1985

Autor: Ridder, N.A. de Bourn, D.

A report of a project study carried in 1985 rainy season (Niger) to collect data for the calibration of satellite imagery at the ground and aerial levels; to make a systematic reconnaissance flight survey to obtain information on livestock population and their distribution after the 1983/84 droug...

Enlace original: https://cgspace.cgiar.org/handle/10568/4421

Investigación en Agricultura
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Ridder, N.A. de ,  Bourn, D. ,  [The development of an early warning system for the Integrated Livestock Production Project (ILP) Tahoua, Niger] ,  The development of an early warning system for the Integrated Livestock Production Project (ILP) Tahoua, Niger
Working Paper 1985

Autor: Eshete, A.

Presents results of an aerial survey of land use in 4 districts of Welo, Ethiopia.

Enlace original: https://cgspace.cgiar.org/handle/10568/4283

Investigación en Agricultura
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Eshete, A. ,  [An experiment in land-use assessment by a systematic reconnaissance flight (SRF) survey] ,  An experiment in land-use assessment by a systematic reconnaissance flight (SRF) survey
Conference Paper 1983

Autor: Wilson, R.T. Semenye, P.P.

Discusses ways of collecting livestock data, mentioning the usefulness and techniques of low-level aerial surveys to gather information on animal numbers; and methods of recording weight changes and milk yields.

Enlace original: https://cgspace.cgiar.org/handle/10568/49826

Investigación en Agricultura
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Wilson, R.T. ,  Semenye, P.P. ,  [Livestock productivity and management] ,  Livestock productivity and management

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