A group that oversees a Fort Wayne marsh straddling the Great Lakes and Ohio River basins favors rebuilding a berm to control the spread of Asian carp and other invasive species.

On Sunday, it was learned that six of the nine options for Eagle Marsh presented by the Army Corps of Engineers call for building a wall, a fence, screens or sluice gates. The state of Indiana built a temporary fence in 2010.

The Little River Wetlands Project oversees the marsh. Its director of preserves, Betsy Yankowiak, said it favors either of two options that tear down existing berms and rebuild them to federal standards because they’re structures already in place, wildlife is used to them, and they present the least amount of long-term change to the area.