Within the field of conservation there has been increasing concern about the fragmentation and isolation of habitats. Suggestions have been made for the implementation of [`]buffer zones' to surround reserves in an effort to minimise the effects of adjacent land uses. These zones may also act as [`]corridors' between reserves, an important aspect where a single reserve does not provide an effective biological unit. In certain regions of the world--for example, in sub-Saharan Africa--such zones would have to incorporate extensive tracts of land if they were to be effective. Such large areas would be difficult to monitor. This paper looks at the possible application of satellite technology as a means of monitoring broad-scale environmental changes within [`]buffer zones'. A method of mapping variation in the canopy cover of low tree and shrub savanna (Okavango region, Botswana) is described and assessed.
Journal articles from the Grassland Society of Southern Africa (GSSA) African Journal of Range and Forage Science as well as related articles and reports from throughout the southern African region.