Saltmarsh currently dominated by Carex spp. Wetlands remove suspended sediments that might otherwise silt-up rivers and reservoirs, impair photosynthesis through heightened turbidity, or adsorb heavy metals and pesticides. Numerous wetland plant species can immobilize such contaminants as heavy metals, pesticides, viruses, and coliform bacteria. In a similar way, surplus nutrients, particularly nitrogen and phosphorus, can be removed, reducing the risk of eutrophication. With their capacity to absorb, store, and slowly release large amounts of water, riverine wetlands are able to moderate discharge rates and lower flood risk.
Wetlands provide habitat and vital breeding and feeding grounds for a diverse array of organisms.
The potential impact of climate change is not addressed. While the plight of the impoverished population in the move-out area is real, the reduction of their poverty will not be realised by moving them to an area that is already marginal in its ability to accommodate human occupation. The project as currently proposed is not sustainable.