An Evaluation of the Cost and Effectiveness of Commercial Oyster Aquaculture in the Chesapeake Bay as a Nutrient Control Strategy Alexander L. Miller Kurt Stephenson, Darrell Bosch, Daniel Kauffman, Bonnie Brown May 28, 2010. Nutrient Reduction Goals for the Bay.
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An Evaluation of the Cost and Effectiveness of Commercial Oyster Aquaculture in the Chesapeake Bay as a Nutrient Control StrategyAlexander L. MillerKurt Stephenson, Darrell Bosch, Daniel Kauffman, Bonnie BrownMay 28, 2010
Nutrient Assimilation is:
(Nutrient Removal Function)
N & P removed byharvesting bivalvebiomass
Portion of total N converted to N2 gas thru denitrification
N in bivalve biodeposits
(feces & pseudofeces)
Nitrification &Denitrification Processes
Source: Adapted from Newell
BottomLine: May not receive additional nutrient assimilative services from oyster aquaculture for free!
-Is oyster aquaculture a cost effective means to remove nutrients?
-How does oyster aquaculture nutrient removal compare to source reduction technologies?
-Number of Oysters Stocked or Transferred into Each Stage
-Number of Months in Each Stage (Growth Rate)
-Number of Oysters to Market
and Permitting Costs
Capital Investment Costs
Annual Operational and Management Costs
lbs of N & P Removed byHarvesting Oysters
Percentage (%) of
N & P in Meat and Shell (g/gdw)
lbs of total N converted to N2 gas thru denitrification
ºC and mg/l
Nutrient Removal Function
Cage Assumptions: Denitrification: 20%
% to Halfshell Market: 90%