Bay Grasses
About 16 species of submerged aquatic vegetation (SAV) inhabit the Chesapeake Bay and its tributaries. Salinity is the determining factor in the distribution of these species throughout the bay. SAV provide numerous benefits to the ecosystem. The presence of an SAV bed slows down wave energy allowing suspended sediment to be trapped within an SAV bed, protecting the adjacent shoreline from erosion. SAV provide protection for juvenile fish and crabs, especially those in their soft shell stage after molting. Scientists have found 30 times more juvenile crabs within Bay grasses than in areas with no grass. Bay grasses are also an important food source for migratory and resident waterfowl.
Viewer Tip: Powerboats can pose a threat to SAV, as their propellers often pull up the roots of the plants, which can take years to re-establish. If you are a recreational boater, observe “no wake” zones, stay in marked channels and try to stay in deeper water where your propellers and hull won’t damage SAV habitats.
This information is provided by COSEE Coastal Trends. Learn more at www.coseecoastaltrends.net.
(Source: Chesapeake Bay Program, www.chesapeakebay.net/baygras.htm)
