The research, published this month in the Proceedings of the National Academy of Sciences, shows that the significant boost in
marsh plant productivity associated with elevated levels of atmospheric carbon dioxide will allow marshes to trap more sediment and create more organic soil.
Throughout the experiment, they measured the effects of each species mix on three important salt
marsh functions: overall grass growth (
productivity); the rate of dead
plant removal (decomposition); and how fast tidal or storm surge water percolated through the
marsh (filtration).