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    Temporal and spatial variability of dissolved organic and inorganic phosphorus, and metrics of phosphorus bioavailability in an upwelling-dominated coastal system

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    2004JC002837.pdf (1.172Mb)
    Date
    2005-10-27
    Author
    Ruttenberg, Kathleen C.  Concept link
    Dyhrman, Sonya T.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/3687
    As published
    https://doi.org/10.1029/2004JC002837
    DOI
    10.1029/2004JC002837
    Keyword
     COAST project; Phosphorus; Nutrient cycling 
    Abstract
    High-frequency temporal and spatial shifts in the various dissolved P pools (total, inorganic, and organic) are linked to upwelling/relaxation events and to phytoplankton bloom dynamics in the upwelling-dominated Oregon coastal system. The presence and regulation of alkaline phosphatase activity (APA) is apparent in the bulk phytoplankton population and in studies of cell-specific APA using Enzyme Labeled Fluorescence (ELF®). Spatial and temporal variability are also evident in phytoplankton community composition and in APA. The spatial pattern of dissolved phosphorus and APA variability can be explained by bottom-controlled patterns of upwelling, and flushing times of different regions within the study area. The presence of APA in eukaryotic taxa indicates that dissolved organic phosphorus (DOP) may contribute to phytoplankton P nutrition in this system, highlighting the need for a more complete understanding of P cycling and bioavailability in the coastal ocean.
    Description
    Author Posting. © American Geophysical Union, 2005. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 110 (2005): C10S13, doi:10.1029/2004JC002837.
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    • Biology
    Suggested Citation
    Journal of Geophysical Research 110 (2005): C10S13
     

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