Environmental Engineering Reference
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Fig. 7 Climatic variables in
Cameroon and Ghana studied
sites
Fig. 8 Distribution of Avicennia
species by class of diameter.
1 = \1 cm; 2 = C1to\3 cm;
3 = C3to\5 cm;
4 = C5to\7 cm;
5 = C7 \10 cm;
6 = C10 to \30 cm;
7 = C30 to \50 cm;
8 = C50+ cm
It is evident that there has been high natural recruitment
into the lower diameter classes since the establishment of
these stands of Rhizophora. The relatively high sapling and
seedling density under the canopy implied great natural
regeneration capacity of the stands. In both countries, we
also observed that the densities of species are very high in
Cameroon, compared with Ghana.
(small to giant), were observed to be sparsely distributed in
the upper diameter classes (class 5-8) in Cameroon, while
none of them were seen in Ghana (Fig. 10 ). It was shown
that there had been high natural recruitment into the lower
diameter classes in these mixed stands in both countries
(Fig. 10 ). The relatively high sapling and seedling density
under the canopy, respectively, in Ghana, and Cameroon
implied great natural regeneration capacity of the stands,
then relatively well conserved.
In the mangroves of both countries, the number of sap-
lings, seedlings and trees ranged, respectively, from 200 to
17,100, 5,500-7,100 and 175-400 stems/ha in Cameroon,
and 7,600-23,600, 1,900-5,500 and 225-575 stems /ha in
Ghana (Figs. 11 , 12 , 13 ). The relatively highest number of
Rhizophora and Avicennia in Balanced Mixed Stand
Analysis of the size class distribution of the trees showed
that Cameroon has the highest value of seedling density,
compare with Ghana. Ghana on the other hand has a very
high density of saplings, compared with Cameroon, with
only a very low density of small saplings. Most of the trees
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