PHENOPHASES OF FIVE MANGROVE SPECIES OF THE SUNDARBANS OF BANGLADESH

The phenological parameters of five mangrove species such as Sundri (Heritiera fomes), Gewa (Excoecaria agallocha), Kankra (Bruguiera sexangula), Goran (Ceriops decandra) and Passur (Xylocarpus mekongensis) were studied during 2005 - 2014 at three ecological zones of the Sundarbans of Bangladesh. Appropriate annual time for leaf emergence, leaf shedding, flowering, fruiting and dropping time of fruit/ propagules were determined. The phenological parameters of E. agallocha, B. sexangula, C. decandra and X. mekongensis were found almost same in three salinity zones. It has been established that the duration of flowering, fruiting and dropping time of H. fomes was shorter in the less saline zone but longer in the strongly saline zone.