Abstract
Mangroves grow near the sea and inland. However, the mangroves that develop inland have a high and variable salinity. The salinity is a key factor in the anatomy of mangrove wood, this work aimed to show the impact of salinity on the vessel density, and the infradensity of Avicennia germinans (A. germinans). To do this, the trees of A. germinans were collected from the sites of Mamboumba (near the sea) and Oveng (inland), and analyses of vessel density and infradensity were performed in the laboratory. The results obtained show that the density of the vessels and the infradensity of heartwood, for example of A. germinans collected at the Oveng site are significantly higher with values of 38.11 ± 5.99 mm-2 and 0.95 ± 0.06 g/cm3 respectively compared to 28.75 ± 8.19 mm-2 and 0.81 ± 0.05 g/cm3 for A. germinans collected at the Mamboumba site. Also, we note that the vessels in Oveng wood are smaller than those in Mamboumba wood. This high salinity is responsible for the formation of small vessels and consequently for the increase in the infradensity of the A. germinans wood from the Oveng site.
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