STARDUST II - Spatial and Temporal Assessment
of high Resolution Depth profiles Using novel Sampling Technologies The fate of pollutants in fluvial and marine sediments in cross-border zones
Retrospective study of the mangroves of the Tanbi wetland complex, The Gambia
Maniatis, D. (2005). Retrospective study of the mangroves of the Tanbi wetland complex, The Gambia. MSc Thesis. Vrije Universiteit Brussel: Brussel. 124 pp.
Gambia Mangroves Water bodies > Inland waters > Wetlands Avicennia germinans (L.) L. [WoRMS]; Rhizophora mangle L. [WoRMS] Gambia [Marine Regions] Marien/Kust; Brak water
The aim of this retrospective study was to examine, using remote sensing and vegetation dynamics, the past, present and future status of the mangroves of the Tanbi Wetland Complex (TWC). Seventeen training sites and 29 plots were sampled. The two dominant species were found to be Rhizophora mangle and Avicennia germinans and show a distinct zonation pattern. A supervised classification was performed, with a resulting mangrove habitat map of an estimated accuracy above 75%. It was shown that canopy height was inversely related to increasing values in salinity and positively related to d15N. The retrospective study made use of additional aerial photographs, satellite images and historical maps dating up to 1816. The conclusion is that the mangroves of the TWC have been stable for at least 60 years and possibly up to 200 years. No major changes could be observed through time, except for the reclamation of mangroves for the expansion and development of Banjul. There appears to be equilibrium between subsistence uses of the mangroves and itsexistence. An improved methodology for achieving a 'good' accuracy assessment is proposed together with management guidelines and ideas.
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STARDUST II is a project funded by the INTERREG III A programme (France/Walloon Region/Flanders
French-Flemish subprogramme) of the European Community's Regional Development Fund.
Hosted by the Flanders Marine Institute (VLIZ)
