The paper deals with three mangrove species of Indian Sunderbans namely, Heritiera fomes Bach.-Him, Nypa fruticans Wamb. and Acrostichum aureum L. which have become endangered due to different environmental impact of them. The main factors causing rapid decrease in the population of these three species are (i) Lack of fresh water supply, (ii) Human population pressure, and (iii) Over exploitation. The problem has been assessed and measures suggested to save the three species.
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