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More woody plants? The status of bush encroachment in Botswana's grazing areas.

• N M Moleele, Susan Ringrose, W R Matheson, Cornelis VanderPost
• Journal of environmental management
• 2002

Foci points, which are currently intensified by increased anthropogenic activities, have resulted in vegetation changes in the cattle-dominated grazing areas of Botswana. Bush encroachment… (More)

Discrimination of relative numerosity and stimulus mixture by pigeons with comparable tasks.

• W K Honig, W R Matheson
• Journal of experimental psychology. Animal…
• 1995

Arrays of small squares of 2 colors were presented in various proportions to pigeons on a video screen. Birds pecked differentially at the left or right side of the screen to obtain grain. In… (More)

Climate- and human-induced woody vegetation changes in Botswana and their implications for human adaptation.

• Susan Ringrose, Aston C Chipanshi, +4 authors André Jellema
• Environmental management
• 2002

For purposes of suggesting adaptive and policy options regarding the sustained use of forestry resources in Botswana, an analysis of the whole countrywide satellite data (showing the mean present… (More)

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