Fig. 3. Multispectral color composite of the sparsely populated Bugala Island, located within 20 km from the study area, and within the same agroecological zone. This composite, when draped over a digital elevation model (DEM), illustrates the natural distribution of forest, greenish colored areas, and grassland, bright, yellowish colored areas, cover in this agroecological zone. This multispectral color composite was generated with a Landsat ETM+ image acquired on 9 July 2002. It is produced by setting band 2, green wavelengths, to drive blue colors, band 5, mid-infrared wavelength, to drive the green colors, and band 7, mid-infrared wavelength, to drive the red colors. The composite was constructed by Sean Sweeney.