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The purpose of this study was to analyse if the colour of soils on granito-gneissic bedrock of West Africa could give some simple indicators of the duration of soil waterlogging. A toposequence on a representative hillside in central Togo (lat 8°38′–8°39′N, long 1°00′–1°01′E) was studied by means of 19 hydropedological stations. Soil and piezometric conditions were studied on these stations for three...
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