Two Mississippi River diversions created to reduce salinity levels in Breton Sound and the Barataria Basin, and a crevasse that cut through the river's east bank levee in Plaquemines Parish, actually caused the loss of more wetlands than they helped build, according to a new study led by LSU researchers. But experts caution that the study does not necessarily portend similar results for the two massive diversions planned along the lower Mississippi in the next few years - diversions designed with the specific goal of land-building.