• Login
    About WHOAS
    View Item 
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • Marine Chemistry and Geochemistry (MC&G)
    • View Item
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • Marine Chemistry and Geochemistry (MC&G)
    • 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

    Hierarchical and dynamic seascapes : a quantitative framework for scaling pelagic biogeochemistry and ecology

    Thumbnail
    View/Open
    Manuscript_PinO100613v3_with-figures.pdf (1.104Mb)
    Date
    2013-10-07
    Author
    Kavanaugh, Maria T.  Concept link
    Hales, Burke  Concept link
    Saraceno, Martin  Concept link
    Spitz, Yvette H.  Concept link
    White, Angelicque E.  Concept link
    Letelier, Ricardo M.  Concept link
    Metadata
    Show full item record
    Citable URI
    https://hdl.handle.net/1912/6504
    As published
    https://doi.org/10.1016/j.pocean.2013.10.013
    Keyword
     North Pacific; Seascapes; Seasonal variations; Pelagic environment; Biogeochemistry; Models 
    Abstract
    Comparative analyses of oceanic ecosystems require an objective framework to define coherent study regions and scale the patterns and processes observed within them. We applied the hierarchical patch mosaic paradigm of landscape ecology to the study of the seasonal variability of the North Pacific to facilitate comparative analysis between pelagic ecosystems and provide spatiotemporal context for Eulerian time-series studies. Using 13-year climatologies of sea surface temperature (SST), photosynthetically active radiation (PAR), and chlorophyll a (chl-a), we classified seascapes in environmental space that were monthly-resolved, dynamic and nested in space and time. To test the assumption that seascapes represent coherent regions with unique biogeochemical function and to determine the hierarchical scale that best characterized variance in biogeochemical parameters, independent data sets were analyzed across seascapes using analysis of variance (ANOVA), nested-ANOVA and multiple linear regression (MLR) analyses. We also compared the classification efficiency (as defined by the ANOVA F-statistic) of resultant dynamic seascapes to a commonly-used static classification system. Variance of nutrients and net primary productivity (NPP) were well characterized in the first two levels of hierarchy of eight seascapes nested within three superseascapes (R2 = 0.5-0.7). Dynamic boundaries at this level resulted in a nearly 2-fold increase in classification efficiency over static boundaries. MLR analyses revealed differential forcing on pCO2 across seascapes and hierarchical levels and a 33 % reduction in mean model error with increased partitioning (from 18.5 μatm to 12.0 μatm pCO2). Importantly, the empirical influence of seasonality was minor across seascapes at all hierarchical levels, suggesting that seascape partitioning minimizes the effect of non-hydrographic variables. As part of the emerging field of pelagic seascape ecology, this effort provides an improved means of monitoring and comparing oceanographic biophysical dynamics and an objective, quantitative basis by which to scale data from local experiments and observations to regional and global biogeochemical cycles.
    Description
    Author Posting. © The Author(s), 2013. This is the author's version of the work. It is posted here by permission of Elsevier for personal use, not for redistribution. The definitive version was published in Progress in Oceanography 120 (2014): 291-304, doi:10.1016/j.pocean.2013.10.013.
    Collections
    • Marine Chemistry and Geochemistry (MC&G)
    Suggested Citation
    Preprint: Kavanaugh, Maria T., Hales, Burke, Saraceno, Martin, Spitz, Yvette H., White, Angelicque E., Letelier, Ricardo M., "Hierarchical and dynamic seascapes : a quantitative framework for scaling pelagic biogeochemistry and ecology", 2013-10-07, https://doi.org/10.1016/j.pocean.2013.10.013, https://hdl.handle.net/1912/6504
     

    Related items

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

    • Thumbnail

      Seascapes as a new vernacular for pelagic ocean monitoring, management and conservation 

      Kavanaugh, Maria T.; Oliver, Matthew J.; Chavez, Francisco P.; Letelier, Ricardo M.; Muller-Karger, Frank E.; Doney, Scott C. (Oxford University Press, 2016-07-18)
      For terrestrial and marine benthic ecologists, landscape ecology provides a framework to address issues of complexity, patchiness, and scale—providing theory and context for ecosystem based management in a changing climate. ...
    • Thumbnail

      Linking habitat mosaics and connectivity in a coral reef seascape 

      McMahon, Kelton W.; Berumen, Michael L.; Thorrold, Simon R. (2012-06)
      Tropical marine ecosystems are under mounting anthropogenic pressure from overfishing and habitat destruction, leading to declines in their structure and function on a global scale. While maintaining connectivity among ...
    • Thumbnail

      A framework for a marine biodiversity observing network within changing continental shelf seascapes 

      Muller-Karger, Frank E.; Kavanaugh, Maria T.; Montes, Enrique; Balch, William M.; Breitbart, Mya; Chavez, Francisco P.; Doney, Scott C.; Johns, Elizabeth M.; Letelier, Ricardo M.; Lomas, Michael W.; Sosik, Heidi M.; White, Angelicque E. (The Oceanography Society, 2014-06)
      Continental shelves and the waters overlying them support numerous industries as diverse as tourism and recreation, energy extraction, fisheries, transportation, and applications of marine bio-molecules (e.g., agribusiness, ...
    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