By D. A. T. Baldry, D. Calamari, Laurent Yameogo

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Additional info for Environmental Impact Assessment of Settlement and Development in the Upper Leraba Basin: Burkina Faso, Cote D'Ivoire, and Mali (World Bank Technical Papers)

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For each of these compartments a capacity (Z) can be calculated and therefore the fugacity can be worked out, once the volume and the chemical input are known. From the fugacity, chemical amounts and concentrations in each compartment can be calculated. Input Data for the SoilFug Model Input data for the Soilfug model fell under four headings-chemicals, soil properties, water input/output balance, and pesticide treatmentseach of which is elaborated below. Chemicals Physico-chemical properties of the pesticides, together with their half-life in soil, were the first data to be entered into the SoilFug model.

Were Berlinia grandiflora, Parinari polyanda, Ficus platyphylla, Khaya senegalensis, Syzygium guineense, Cola cordifolia, Carapa procera, Pentadesma butyracea, Adina microcephala and Mucuna pruriens. Smaller rivers and streams also supported riverine forests, but they were much less extensive and composed of a much smaller number of tree species. Ethnography Traditionally, the greater part of the Basin was occupied by farmers of the Senoufo ethnic group, with some significant populations of Toussian and Gouin peoples in the extreme eastern part of the area.

Triazophos: This organophosphate has a low to medium level of persistence, and can be expected to volatilize moderately from soil. However, in view of its limited lipofilicity, triazophos could leach through the soil profile, thus increasing the probability that it could be transported by runoff from rainfall. The molecule is slightly toxic to mammals and birds, moderately to highly toxic to fish, and highly toxic to crustaceans and bees. Once introduced into the environment, it is expected that triazpophos will most readily enter the water compartment, within which degradation will occur.

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