Reedbuck, Waterbuck, Lechwe, Puku >>

Distribution - available habitats

Figure 9: Habitats suitable for the wetland grazers in the Caprivi
Figure 13: Cleared lands in the Chobe-Zambezi river system

Figure 14: Cleared lands in the Kwando-Linyanti river system

Figure 15: Cleared lands in the Kawango river system
 
 
 
 

In 1996 some 21% of the the prime wetland habitats for reedbuck, waterbuck, lechwe and puku were cleared for agriculture (Mendelsohn & Roberts 1997, p 18; Figures 13-15). Martin (2004) extrapolated to the probable situation in 2004 assuming that the rate of land clearance is directly proportional to human population growth. Using a growth rate of 4% per annum (Mendelsohn and Roberts 1997, p 15), the present percentage cleared has been derived by multiplying the percentage cleared in 1996 by a factor of 1.37 (Table 5). This suggests that in 2004 72% of the wetland habitats remained.

 

Martin's analysis suggest the disappearance of the "Kavango/Kwando valley woodland" habitat type. However, a small proportion remains protected in Mahango, the western core area of the West Caprivi Game reserve, the 'Golden Triangle and the conservancies on the eastern bank of the Kwando River. This analysis does not take into account the additional pressure on these habitats caused by cattle grazing. Waterbuck, in particular, avoid overgrazed areas.

 

FLOODPLAINS
1.37 <-- multiplier
Vegetation type Area km2

% cleared

1996

1996 area remaining % cleared 2004 2004 area remaining
Bukalo-Liambezi grassland 223 32.6 150 44.6 124
Chobe grassland-hummock mosaic 294 32.7 198 44.8 163
Chobe Swamp grassland 177 37.1 111 50.8 87
Chobe wetland 73 50.4 36 69 23
Dry Mamili grassland 340 10.9 303 14.9 289
Kwando-Linyanti grassland 121 1.8 119 2.5 118
Liambezi-Linyanti grassland 617 32.4 417 44.3 343
Okavango-Kwando grassland 182 3.6 176 4.9 173
Wet Mamili grassland 95 0 95 0 95
Zambezi floodplain channels 64 22.4 49 30.7 44
Zambezi floodplain grassland 1,168 9.5 1,057 13 1,016
Zambezi transition grassland 309 8.4 283 11.5 273
Zambezi woodland 100 6 94 8.2 92
Totals
3,762 3,088 2,839
Percent remaining
82 75
RIVERINE WOODLANDS
Vegetation type Area km2

% cleared

1996

1996 area remaining % cleared 2004 2004 area remaining
           
Impalila woodland 18 22.4 14 30.7 13
Maningimanzi woodland+channels 88 7.2 81 9.9 79
Okavango valley fields+shrubland 187 20.5 149 28.1 135
Okavango/Kwando valley woodland 236 87.2 30 100 0
Totals
529 275 226
Percent remaining
52 43
Open water 166 4.8 158 6.6 155
Percent remaining
95 93
GRAND TOTAL 4,458 3,521 3,221
Percent remaining
79 72
Table 5: Habitats suitable for the Wetland Grazers in the Caprivi