ABSTRACT

Many ecologists believe that biodiversity provides buffers or functional resilience to the ecosystem; an ecosystem with a variety of species can better resist against any kind of deterioration and more importantly its functions have to be conceived as an interactive constituent of the entire environmental structure (Hughes 2005:152). Wetlands and deltas are some of the richest biological productive natural habitats on earth. They play an active role in arranging the water regime and its quality by discharging the underground water, minimising the destructive effects of floods and compensating the foundation in their regions. They also have positive influences on local climate in raising the humidity which purveys the necessary rainfall and warmth.