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Direct measurements of the nutrient management potential of ribbed mussels, Geukensia demissa, at two sites in upper Narragansett Bay, Rhode Island

AutorDixon, Mark S.; Bernatchez, Genevieve; Galimany, Eve ; Li, Judy Yaqin; Meseck, Shannon L.; Rose, J.M.; Wikfors, Gary H.
Fecha de publicación14-ene-2015
EditorNOAA Aquaculture Program (U.S.)
CitaciónProgram and abstracts : Northeast Aquaculture Conference & Exposition and the 35 th Milford Aquaculture Seminar (2015)
ResumenThere is growing interest in the ability of suspension-feeding bivalve shellfish to filter and assimilate organic matter in seston, thereby removing nutrients from eutrophic coastal waters. The term “nutrient bioextraction” has been coined to identify this ecosystem service. Accurate measurements of clearance and assimilation are needed to estimate the potential of bivalves to contribute to water quality and nutrient management. The ribbed mussel, Geukensia demissa, is capable of filtering a wide size-range of particles, has shown adaptability to a broad range of habitats, and has exhibited high organic-matter assimilation efficiency. Results from previous studies, however, have shown site-specific variability in the capacity of mussels to assimilate nutrients. The need for site-specific testing is evident. Two sites in Narragansett Bay, Rhode Island were selected for the current study. The biodepostion method, coupled with water quality measurements, was used to quantify filtration and assimilation of ribbed mussels at each site monthly from June through September 2014. Total particulate matter and percent organic were higher, 8.12 mg/L and 59%, respectively, at Field’s Point in the Providence River than at Greenwich Bay in the upper bay, 6.80 mg/L and 48%, respectively. Mussels had a lower clearance rate at Field’s Point, 0.98 L/hour but higher assimilation rate, 2.12 mg/hour, compared to Greenwich Bay, 1.76 L/hour and 0.97 mg/hour. Mussels in Field’s Point had higher absorption efficiency 56% versus 38% in Greenwich Bay. Results indicate that ribbed mussel bioextraction would be more effective at the more eutrophic Field’s Point site than in Greenwich Bay
DescripciónJoint Meeting of the Northeast Aquaculture Conference and Exposition and the 35th Milford Aquaculture Seminar, 14-16 January 2015, Portland, Maine
Versión del editorhttp://www.northeastaquaculture.org/program-2/
Aparece en las colecciones: (ICM) Comunicaciones congresos
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