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Title
  • en A lower trophic ecosystem model including iron effects in the Okhotsk Sea
Creator
    • en Okunishi, Takeshi
    • en Ono, Yukiko
    • en Yamashita, Toshihiko
Accessrights open access
Subject
  • Other en ecosystem model
  • Other en Okhotsk Sea
  • Other en phytoplankton
  • Other en iron
  • Other en primary production
  • NDC 468
Description
  • Abstract en We applied a three-dimensional ecosystem-physical coupled model including iron the effect to the Okhotsk Sea. In order to clarify the sources of iron, four dissolved iron compartments, based on the sources of supply, were added to Kawamiya et al.’s(1995) model (KKYS) to create our ecosystem model (KKYS-Fe). We hypothesized that four processes supply iron to sea water: atmospheric loadings from Northeastern Asia, input from the Amur River, dissolution from sediments and regeneration by zooplankton and bacteria. We simulated 1year, from 1 January, 2001 to 31 December, 2001, using both KKYS-Fe and KKYS. KKYS could not reproduce the surface nitrate distribution after the spring bloom, whereas KKYS-Fe agreed well with observations in the northwestern Pacific because it includes iron limitation of phytoplankton growth. During the spring bloom, the main source of iron at the sea surface is from the atmosphere. The contribution of riverine iron to the total iron utilized for primary production is small in the Okhotsk Sea. Atmospheric deposition, the iron flux from sediment and regeneration of iron in the water column play important roles in maintaining high primary production in the Okhotsk Sea.
Publisher en Elsevier
Date
    Issued2007-09-15
Language
  • eng
Resource Type journal article
Version Type AM
Identifier HDL http://hdl.handle.net/2115/32364
Relation
  • URI http://www.sciencedirect.com/science/journal/02784343
  • isVersionOf DOI https://doi.org/10.1016/j.csr.2007.05.007
Journal
    • PISSN 0278-4343
      • en Continental Shelf Research
      • Volume Number27 Issue Number16 Page Start2080 Page End2098
File
Oaidate 2023-07-26