Fisheries in the Southern Border Zone of Takamanda - Impact ...
Fisheries in the Southern Border Zone of Takamanda - Impact ...
Fisheries in the Southern Border Zone of Takamanda - Impact ...
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Gnetum spp. Piper gu<strong>in</strong>eensis<br />
Site<br />
Total no. <strong>of</strong><br />
<strong>in</strong>dividuals<br />
Mean no. <strong>of</strong><br />
<strong>in</strong>dividuals/ha<br />
Total no. <strong>of</strong><br />
<strong>in</strong>dividuals<br />
Mean no. <strong>of</strong><br />
<strong>in</strong>dividuals/ha<br />
<strong>Takamanda</strong> 86 21.5 42 10.5<br />
Obonyi 1 181 45.25 33 8.25<br />
Matene 0 0 16 3<br />
Mfakwe 220 55 25.75 4<br />
Mean (all sites) 121.75 30.4 103 6.45<br />
<strong>the</strong> removal <strong>of</strong> bark strips (for example, Annickia<br />
chlorantha) may pose a threat to <strong>the</strong> <strong>in</strong>dividual, but likely<br />
not to <strong>the</strong> population or species as a whole (Table 11). In<br />
general, many NTFPs such as bush mango, njansang,<br />
bush onion, and bush pepper, where <strong>the</strong> impacts <strong>of</strong><br />
harvest<strong>in</strong>g are m<strong>in</strong>imal, are not at immediate risk <strong>of</strong><br />
be<strong>in</strong>g over-exploited, and <strong>the</strong>re are few reports <strong>of</strong><br />
<strong>in</strong>creas<strong>in</strong>g scarcity <strong>of</strong> <strong>the</strong>se products.<br />
Destructive harvest<strong>in</strong>g such as fell<strong>in</strong>g and removal<br />
<strong>of</strong> <strong>the</strong> <strong>in</strong>dividual is wholly unsusta<strong>in</strong>able. In terms <strong>of</strong><br />
conservation, over-exploitation is exacerbated when a<br />
species occurs <strong>in</strong> low densities or has a restricted natural<br />
distribution (for example, Garc<strong>in</strong>ia mannii). As<br />
important, <strong>the</strong> removal <strong>of</strong> all mature <strong>in</strong>dividuals from an<br />
area poses a threat to local populations (for example,<br />
Carpolobia, Garc<strong>in</strong>ia, and Randia). In such cases, <strong>the</strong><br />
removal <strong>of</strong> reproductively mature <strong>in</strong>dividuals<br />
significantly impacts <strong>the</strong> regenerative potential <strong>of</strong> <strong>the</strong><br />
population, which has considerable long-term effects on<br />
<strong>the</strong> capacity <strong>of</strong> <strong>the</strong> species to replace itself.<br />
Recent <strong>in</strong>creases <strong>in</strong> <strong>the</strong> harvest <strong>of</strong> many NTFPs at<br />
TFR for export to Nigeria is evidence <strong>of</strong> significant local