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- W2165447285 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 343:123-130 (2007) - DOI: https://doi.org/10.3354/meps06937 Relationship between water quality, δ15N, and aspergillosis of Caribbean sea fan corals David M. Baker1,2, Stephen E. MacAvoy1, Kiho Kim1,* 1Department of Biology, American University, Washington, DC 20016, USA 2Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, New York 14853, USA *Corresponding author. Email: kiho@american.edu ABSTRACT: It has been hypothesized that excess nitrogen (N) contributes to coral reef decline by exacerbating the impact of disease. We tested the relationship between N concentration and the prevalence and severity of aspergillosis of the sea fan coral Gorgonia ventalina at 9 reefs along the Florida Keys Reef Tract. Quarterly water quality data, averaged over 1 and 4 yr prior to a disease survey, were used to examine whether aspergillosis dynamics reflected short- or long-term N concentrations. A positive relationship was detected between prevalence of aspergillosis and long-term total nitrogen (TN) concentration; in contrast, disease severity was positively related to the ratio between dissolved inorganic nitrogen and total phosphate (DIN:TP) over both short- and long-terms. These results may reflect the differential influence of N on the host and pathogen. We also tested whether N isotope analysis (δ15N) of sea fan coral tissue and skeleton could be used to assess the relative exposure to anthropogenic N inputs and its impact on disease. There was no relationship between δ15N and aspergillosis (either prevalence or severity). Furthermore, there was no relationship between δ15N and environmental concentrations of N. It is possible that the source of N (e.g. anthropogenic) does not affect the dynamics of sea fan aspergillosis, or that the δ15N signatures were suppressed by agricultural effluents and other N sources, thus confounding our analyses with disease. KEY WORDS: Sea fan coral · Gorgonia ventalina · Water quality · Aspergillosis · Disease · Nitrogen · δ15N Full text in pdf format PreviousNextCite this article as: Baker DM, MacAvoy SE, Kim K (2007) Relationship between water quality, δ15N, and aspergillosis of Caribbean sea fan corals. Mar Ecol Prog Ser 343:123-130. https://doi.org/10.3354/meps06937 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 343. Online publication date: August 07, 2007 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2007 Inter-Research." @default.
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- W2165447285 title "Relationship between water quality, δ15N, and aspergillosis of Caribbean sea fan corals" @default.
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