Temporal and spatial variability of dissolved organic and inorganic phosphorus, and metrics of phosphorus bioavailability in an upwelling-dominated coastal system
MetadataShow full item record
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.
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.
Suggested CitationArticle: Ruttenberg, Kathleen C., Dyhrman, Sonya T., "Temporal and spatial variability of dissolved organic and inorganic phosphorus, and metrics of phosphorus bioavailability in an upwelling-dominated coastal system", Journal of Geophysical Research 110 (2005): C10S13, DOI:10.1029/2004JC002837, https://hdl.handle.net/1912/3687
Showing items related by title, author, creator and subject.
Sargasso Sea phosphorus biogeochemistry : an important role for dissolved organic phosphorus (DOP) Lomas, Michael W.; Burke, A. L.; Lomas, D. A.; Bell, D. W.; Shen, C.; Dyhrman, Sonya T.; Ammerman, James W. (Copernicus Publications on behalf of the European Geosciences Union, 2010-02-19)Inorganic phosphorus (SRP) concentrations in the subtropical North Atlantic are some of the lowest in the global ocean and have been hypothesized to constrain primary production. Based upon data from several transect cruises ...
Phosphorus dynamics in biogeochemically distinct regions of the southeast subtropical Pacific Ocean Duhamel, Solange; Björkman, Karin M.; Repeta, Daniel J.; Karl, David M. (Elsevier, 2016-12-29)The southeast subtropical Pacific Ocean was sampled along a zonal transect between the coasts of Chile and Easter Island. This remote area of the world’s ocean presents strong gradients in physical (e.g., temperature, ...
Discrete organic phosphorus signatures are evident in pollutant sources within a Lake Erie tributary Brooker, Michael R.; Longnecker, Krista; Kujawinski, Elizabeth B.; Evert, M. H.; Mouser, Paula J. (2018-05)Phosphorus loads are strongly associated with the severity of harmful algal blooms in Lake Erie, a Great Lake situated between the United States and Canada. Inorganic and total phosphorus measurements have historically ...