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Nutrient reduction by eastern oysters exhibits low variability associated with reproduction, ploidy, and farm location
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2024
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Source: Marine Pollution Bulletin, 202, 116286
[PDF-1.68 MB]
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Journal Title:Marine Pollution Bulletin
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Description:Enhancement of shellfish populations has long been discussed as a potential nutrient reduction tool, and eastern oyster aquaculture was recently approved as a nutrient reduction best management practice (BMP) in Chesapeake Bay, USA. This study addressed BMP-identified data gaps involving variation in nutrient concentration related to ploidy, effects of reproductive development, and a paucity of phosphorus concentration data. Diploid and triploid oysters were collected from farms in Maryland and Virginia across the typical local reproductive cycle. The nutrient concentration of tissue and shell was consistent with the currently implemented BMP. Minor variation observed in nitrogen and phosphorus concentration was within the previously reported range, for farm location, ploidy, and reproductive cycle timing. Ploidy-based differences in tissue dry weight were not observed at either farm, which contrasts with current nutrient reduction estimates. These results suggest separate crediting values for diploids and triploids may need further investigation and potential re-evaluation.
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Source:Marine Pollution Bulletin, 202, 116286
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ISSN:0025-326X
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Rights Information:Accepted Manuscript
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Compliance:Submitted
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