Publisher :
Place of publication :
Publication year : 2009
Thematic : Mangroves
Language : English
Note
1. The structure, forest condition and regeneration status of nine mangrove forests in two trans-boundary areas
of Mozambique bordering Tanzania and South Africa were studied. The main objective was to estimate the
cutting intensity in the selected sites – Saco and Sangala in southern Mozambique; Mecu´ fi, Pemba, Ibo, Luchete,
Ulo in northern Mozambique, and Mngoji 1 and Mngoji 2 in Tanzania.
2. A total of 135, 10m10m quadrats were set in the outer, middle and lower parts of the mangrove forests at
all sampling sites. Measurements included stem diameter at breast height (DBH) and height of adult trees (i.e. all
trees with stem diameter more than 2.5 cm). Young trees (with stem diameter of less than 2.5 cm) were classified
as juveniles. To assess forest condition, trees within the quadrat were classified into intact, partially cut, coppiced,
die back and stump. Pole quality was appraised through the classification of the lead stem into three
categories–straight, semi-straight and crooked poles.
3. The results indicate different levels of exploitation with Mngoji 1 and Mngoji 2, the most degraded sites,
having stump densities of 959 stumps ha1 and 592 stumps ha1, respectively. Most sites had mostly poles
of inferior quality (crooked poles), but high densities of straight and semi-straight poles were found in Mngoji 1
(742 stems ha1) and Saco (636 stems ha1).
4. Natural regeneration was observed in most sites but not for all species, with adequate regeneration in Saco
(14 766 saplings ha1) and Mecu´ fi (14 706 saplings ha1), while low regeneration was recorded in Mngoji 1 and 2
(2212 saplings ha1 and 4799 saplings ha1, respectively).
5. These results indicate the need for improved mangrove management and replanting especially in mangrove
depleted conservation areas of southern Tanzania.
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Keywords : Rattus simalurensis
Encoded by : Pauline Carmel Joy Eje
