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1ALL"rovement Results <br /> . 1. Restored marsh provides eion and a <br /> bacterial filter strip. <br /> 2. Marsh rebuild with bottom sediments returns some navigation <br /> depth. <br /> 3. Restoration improves hydraulic radius (higher peak current <br /> speed) reducing sediment deposition/nutrient regeneration <br /> and improving potential oyster set (less slime). <br /> 4. Coir retainers provide Ribbed Mussel habitat for filtration and <br /> a perpendicular structure inhibiting waterfowl access (feces) <br /> to the marsh's surface. <br /> S. Addition of coir supporting ticultch" creates conditions <br /> favorable'to natural oyster set eliminating aquaculture <br /> demands for manpower investment, It also provides habitat <br /> for benthic infauna diversity. <br /> Natural Attenuation of Nitro en <br /> The actual conversion of nitrogen in this environment is known as <br /> biologically mediated denitrification. Nitrogen enters the ground <br /> water predominantly as nitrate, which does not change to any other <br /> for of nitrogen unless the proper conditions exist for some type of <br /> conversion. Salt marsh wetlands fringing an embayment will <br /> generally be good candidates for this type of conversion: marsh <br /> peat and mud contain the right combination of organic Carbon, <br /> naturally occurring denitrifying bacteria, and anoxic Conditions <br /> that allow the conversion of nitrate to nitrogen gas. Nitrogen gas is <br /> an inert form of nitrogen that vents without harm to the atmosphere, <br /> where it makes up approximately 80% of the air we breathe. <br /> Copied from: <br /> The Massachusetts Estuaries Project <br /> Embaymeat Restoration and Guidance for Implementation <br /> Strategies 2003 <br /> Massachusetts Department of Environmental Protection <br />