O.K.
The almighty oyster cleans, feeds, shelters, & provides. Denitrifying the water column, harboring juvenile crabs & fin fish, accumulating a dense nutrient profile.
1 OYSTERS ARE FILTER-FEEDERS
Below are excerpts from each paper's abstract.
Elka T. Porter, Jeffrey C. Cornwell, Lawrence P. Sanford
"Oysters shifted processes to the sediments by decreasing phytoplankton biomass without stimulating additional blooms and by increasing light penetration to the bottom."
M. Lisa Kellogg, Jeffrey C. Cornwell, Michael S. Owens, Kennedy T. Paynter
"Our results demonstrate that oyster reef restoration can significantly increase denitrification rates and enhance nutrient sequestration via assimilation into bivalve shells."
DARIA SEBASTIANO, JEFFREY S. LEVINTON, MICHAEL DOALL AND SHAUNA KAMATH
"The results suggest that an aquaculture-based oyster fishery might compensate for the nonpoint source nitrogen input that is common in many estuaries where nitrogen input is moderate and sewer systems are not present."