Mangrove is an area influenced by tide which can be interpreted to mean a shoreline that is inundated by the extremes of tides, or it can more widely refer to river-bank communities where tides cause some fluctuation in water level but no change in salinity (Tomlinson, 1994). Therefore, mangroves can be found not only occupying extensive tidal mudflats but also along freshwater riverbanks, which are watery area. Hence, the 2011 satellite image had captured empty watery areas which were not planted with mangrove species following the Matang Mangrove Forest tree-harvesting rotation system, which has been in practice since 1950 (Malaysian Timber Council, 2009)(Fig. 6b). At the Matang Mangrove Forest, productive forests are clear-felled once they reach 30 years old (Malaysian Timber Council, 2009). The 30-year period of tree harvesting rotation lies in between this 1993 to 2011 period. At the RAMSAR heritage site at the Sungai Pulai Mangrove Forest Reserve, Johor, Malaysia which is managed primarily for commercial wood production using the silvicultural system, clear felling of trees is practised under a 20-year rotation system. According to the Johor Forestry Department, the vegetation was mostly in between 4 and 15 years old and has not come to the clear-felled period yet; hence, the SPOT 4 imagery which was used in the study at the Sungai Pulai Mangrove Forest Reserve did not detect any clear-felling area filled with water body (Ismail and Hassan Zaki, 2011)