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GIS and multiple-criteria evaluation for the optimisation of tsetse fly eradication programmes

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Abstract

Tsetse flies are the vectors of trypanosomes, the causal agent of trypanosomiasis, a widespread disease of livestock and people in Africa. Control of tsetse may open vast areas of land to livestock-keeping, with the associated benefits of developing mixed crop-livestock production systems. However, as well as possible positive impacts there are also risks: bush clearing would accelerate and cattle numbers would rise, leading to a reduction of vegetation cover, and an increase in runoff and erosion; there may also be increased pressure on conserved areas and reductions in biodiversity. The objective of this study is to show how remotely sensed and other environmental data can be combined in a decision support system to help inform tsetse control programmes in a manner that could be used to limit possible detrimental effects of tsetse control. For Zambia, a methodology is developed that combines a tree-based decision-support approach with the use of Multiple-Criteria Evaluation (MCE), within a Geographical Information System (GIS), in order to target areas for tsetse control. The results show clear differentiation of priority areas under a series of hypothetical scenarios, and some areas (e.g. northwest of Petauke in the Eastern Province of Zambia) are consistently flagged as high priority for control. It is also demonstrated that priority areas do not comprise isolated tsetse populations, meaning that disease control using an integrated approach is likely to be more economically viable than local eradication.

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Authors and Affiliations

  1. CSIRO Mathematical and Information Sciences, Private Bag 5, Wembley 6913, Western Australia, Australia

    Elias Symeonakis

  2. FAO, Viale delle Terme di Caracalla, 00100, Rome, Italy

    Tim Robinson

  3. Department of Geography, King‘s College, Strand, London, WC2R 2LS, UK

    Nick Drake

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  1. Elias Symeonakis
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  2. Tim Robinson
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  3. Nick Drake
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Correspondence to Elias Symeonakis.

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Symeonakis, E., Robinson, T. & Drake, N. GIS and multiple-criteria evaluation for the optimisation of tsetse fly eradication programmes. Environ Monit Assess 124, 89–103 (2007). https://doi.org/10.1007/s10661-006-9210-0

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  • DOI: https://doi.org/10.1007/s10661-006-9210-0

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