That was a report from the Suzuki foundation, pulled together, and they looked at all of the combined values of all the services you get from wetlands. They're talking about phosphorous removal. They're talking about recreational opportunities. They're talking about flood storage capacity. They're talking about—it has been a while since I read the report—carbon issues, carbon sequestration, greenhouse gases, and recreational value. They considered all of those goods and services that you get from having wetlands within the landscape.
On April 1st, 2014. See this statement in context.