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Pearl: A New Model for Evaluating and Managing Shellfish Growing Water Closures
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org
Citation: Applied Engineering in Agriculture. 29(3): 351-359. (doi: http://dx.doi.org/10.13031/aea.29.9229) @2013
Authors: Fred S. Conte, Abbas Ahmadi
Keywords: Modeling Shellfish sanitation Water quality Rainfall closure rules.
Abstract. This article introduces a new model, Pearl, that is designed to evaluate and manage shellfish growing area closures. The Pearl model can be used in one of two modes. In the stand-alone mode, Pearl can perform a multi-year analysis using observed fecal coliform data collected from within shellfish growing areas to determine if shellfish harvested from those areas may pose a human health risk for shellfish consumers. Shellfish growing areas that are identified through a stand-alone Pearl analysis are candidates for closure rule adjustments. Run in tandem mode with a previously released model, Aquarius, Pearl can be used to adjust closure rules and maximize the number of days a shellfish growing area can remain open to harvest with no increased risk of illness to shellfish consumers. Pearl increases the sensitivity of the existing National Shellfish Sanitation Program’s closure assessment method. The use of Pearl could open harvesting areas that might otherwise be closed, thereby increasing the profits of shellfish growers with no increased risk of illness to shellfish consumers.
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