• Login
    About WHOAS
    View Item 
    •   WHOAS Home
    • Marine Biological Laboratory
    • Boston University Marine Program (BUMP)
    • View Item
    •   WHOAS Home
    • Marine Biological Laboratory
    • Boston University Marine Program (BUMP)
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of WHOASCommunities & CollectionsBy Issue DateAuthorsTitlesKeywordsThis CollectionBy Issue DateAuthorsTitlesKeywords

    My Account

    LoginRegister

    Statistics

    View Usage Statistics

    NLOAD : an interactive, web-based modeling tool for nitrogen management in estuaries

    Thumbnail
    View/Open
    05-1460.1.pdf (265.4Kb)
    Date
    2007-07
    Author
    Bowen, Jennifer L.  Concept link
    Ramstack, Joy M.  Concept link
    Mazzilli, S.  Concept link
    Valiela, Ivan  Concept link
    Metadata
    Show full item record
    Citable URI
    https://hdl.handle.net/1912/4679
    As published
    https://doi.org/10.1890/05-1460.1
    DOI
    10.1890/05-1460.1
    Keyword
     Barnegat Bay; Coastal planning; Eutrophication; Management tool; Nitrogen loading; Nitrogen mitigation; Resource managers; Watershed–estuary coupling 
    Abstract
    Eutrophication of estuaries is an increasing global concern that requires development of new tools to identify causes, quantify conditions, and propose management options that address this environmental problem. Since eutrophication is often associated with increased inputs of land-derived nitrogen to estuaries, we developed NLOAD, a user-friendly, web-based tool that brings together six different published models that predict nitrogen loading to estuaries and two models that estimate nitrogen concentrations in coastal waters. Here we describe each of the models, demonstrate how NLOAD is designed to function, and then use the models in NLOAD to predict nitrogen loads to Barnegat Bay, New Jersey (USA). The four models that we used to estimate nitrogen loads to Barnegat Bay, when adjusted, all had similar results that matched well with measured values and indicated that Barnegat Bay receives roughly 26 kg N·ha−1·yr−1. Atmospheric deposition was the dominant source of nitrogen to Barnegat Bay, followed by fertilizer nitrogen. Wastewater in Barnegat Bay is diverted to an offshore outfall and contributes no nitrogen to the system. The NLOAD tool has an additional feature that allows managers to assess the effectiveness of a variety of management options to reduce nitrogen loads. We demonstrate this feature of NLOAD through simulations in which fertilizer inputs to the Barnegat Bay watershed are reduced. Even modest cutbacks in the use of fertilizers on agricultural fields and lawns can be shown to reduce the amount of N entering Barnegat Bay.
    Description
    Author Posting. © Ecological Society of America, 2007. This article is posted here by permission of Ecological Society of America for personal use, not for redistribution. The definitive version was published in Ecological Applications 17, Supple. (2007): S17–S30, doi:10.1890/05-1460.1.
    Collections
    • Boston University Marine Program (BUMP)
    • Ecosystems Center
    Suggested Citation
    Ecological Applications 17, Supple. (2007): S17–S30
     

    Related items

    Showing items related by title, author, creator and subject.

    • Thumbnail

      Spartina alterniflora δ15N as an indicator of estuarine nitrogen load and sources in Cape Cod estuaries 

      Kinney, Erin L.; Valiela, Ivan (2018-04)
      δ15N values of coastal biota have been used as indicators of land-derived N-loads and sources to estuarine systems and should respond predictably to differences in nitrogen and be sensitive to changes in nitrogen, preferably ...
    • Thumbnail

      The influence of anthropogenic nitrogen loading and meteorological conditions on the dynamics and toxicity of Alexandrium fundyense blooms in a New York (USA) estuary 

      Hattenrath, Theresa K.; Anderson, Donald M.; Gobler, Christopher J. (2010-02-17)
      The goal of this two-year study was to explore the role of nutrients and climatic conditions in promoting reoccurring Alexandrium fundyense blooms in the Northport-Huntington Bay complex, NY, USA. A bloom in 2007 was ...
    • Thumbnail

      Ecological constraints on planktonic nitrogen fixation in saline estuaries. I. Nutrient and trophic controls 

      Marino, Roxanne; Chan, Francis; Howarth, Robert W.; Pace, Michael L.; Likens, Gene E. (Inter-Research, 2006-03-15)
      Heterocystous, planktonic cyanobacteria capable of fixing atmospheric N2 into available nitrogen (N) are common and critically important to nutrient cycling in many lakes, yet they are rarely observed in estuaries at ...
    All Items in WHOAS are protected by original copyright, with all rights reserved, unless otherwise indicated. WHOAS also supports the use of the Creative Commons licenses for original content.
    A service of the MBLWHOI Library | About WHOAS
    Contact Us | Send Feedback | Privacy Policy
    Core Trust Logo