Study Area Characteristics.

a Unknown.
b Southern Big Bend is not an enclosed estuary. Open ocean areas adjacent to the coast are less than 3 m in depth.
c This is likely an underestimate because seagrass has not been estimated in deeper waters due to insufficient water clarity.
Sources: [7, 32–44].
Some characteristics of the 6 study areas are presented including area, mean inflow, mean depth, average salinity, great diurnal tide, extent of coastal wetlands and the type and extent of the predominant subtidal habitat (not including bare sediments).