The Bioavailability of Effluent-derived Organic Nitrogen along an Estuarine Salinity Gradient

Total maximum daily loads for nitrogen (N) are currently being established for the Chesapeake Bay watershed. While we know inorganic Í is bioavailable in the environment and therefore its input contributes to cultural eutrophication, the bioavailability of organic N is unclear. Using bioassay exper... Ausführliche Beschreibung

1. Person: Filippino, Katherine C.
Weitere Personen: Mulholland, Margaret R. verfasserin; Bernhardt, Peter W. verfasserin; Boneillo, George E. verfasserin; Morse, Ryan E. verfasserin; Semcheski, Matthew verfasserin; Marshall, Harold verfasserin; Love, Nancy G. verfasserin; Roberts, Quinn verfasserin; Bronk, Deborah A. verfasserin
Quelle: in Estuaries and coasts : journal of the Estuarine Research Federation Vol. 34, No. 2 (2011), p. 269-280
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Format: Online-Artikel
Sprache: English
Veröffentlicht: 2011
Beschreibung: Online-Ressource
Schlagworte: research-article
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Anmerkung: Copyright: © 2011 Coastal and Estuarine Research Federation
Zusammenfassung: Total maximum daily loads for nitrogen (N) are currently being established for the Chesapeake Bay watershed. While we know inorganic Í is bioavailable in the environment and therefore its input contributes to cultural eutrophication, the bioavailability of organic N is unclear. Using bioassay experiments, we examined the impact of effluent-derived organic nitrogen (EON) from wastewater treatment plants on natural water samples collected along an estuarine/salinity gradient within the lower Chesapeake Bay watershed. All of the inorganic N and between 31% and 96% of the EON was removed during biotic bioassays within the first 2 days. Further, there was substantial abiotic reactivity of effluent N when it was added to natural water samples. Results demonstrate that organic and inorganic N in effluent is removed to support the growth of microbial communities. These are the first results aimed at assessing the reactivity of EON in natural waters along an estuarine/salinity gradient.
ISSN: 1559-2731

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