Submerged Aquatic Vegetation (SAV)

Though forests and pastures are the most obvious vegetation to "landubbers" in Virginia, the underwater grasses in the Chesapeake Bay are being monitored very closely by those trying to measure if we are "saving" or "losing" the Chesapeake Bay.


submerged aquatic vegetation at Cape Charles
Submerged Aquatic Vegetation (SAV) mapped at Cape Charles
Source: Virginia Institute of Marine Science, Bay Grasses (SAV) in Chesapeake Bay and Delmarva Peninsula Coastal Bays

The Submerged Aquatic Vegetation (SAV) is the basis for bringing back the crabs, the oysters, the fish, and the cultural patterns that were based on harvesting the food from the Chesapeake Bay. Once the SAV is restored, in theory the number of critters that graze on the SAV will increase - and then the larger animals that eat the grazing critters (such as crabs and rockfish) will have more food. The initial hesapeake Bay Agreement goal, at "Tier 1," was "Restoration of SAV to areas previously vegetated, as mapped through regional and baywide aerial surveys between 1971 to 1990."

References

1. Orth, R.J., D.J. Wilcox, L.S. Nagey, J.R. Whiting, and J.R. Fishman. 2000. "Frequently Asked Questions," 1999 Distribution of Submerged Aquatic Vegetation in the Chesapeake Bay and Coastal Bays. VIMS Special Scientific Report Number 141. Final report to U.S. EPA, Chesapeake Bay Program, Annapolis, MD. Grant No.CB993777-02-0, http://www.vims.edu/bio/sav/sav99/help/faq.html (last checked September 15, 2002)


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