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Title
  • A lower trophic ecosystem model including iron effects in the Okhotsk Sea
Creator

Okunishi, Takeshi

Kishi, Michio J.

Ono, Yukiko

Yamashita, Toshihiko

Subject
  • Other ecosystem model
  • Other Okhotsk Sea
  • Other phytoplankton
  • Other iron
  • Other primary production
  • NDC 468
Description
Other
  • 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.
PublisherElsevier
Date Issued 2007-09-15
Languageeng
NIItypejournal article
VersiontypeAM
Identifier URI http://hdl.handle.net/2115/32364
Relation
  • isIdenticalTo DOI https://doi.org/10.1016/j.csr.2007.05.007
Journal
    • ISSN 0278-4343
    • Continental Shelf Research
    27(16), 2080-2098
File
Oaidate2012-02-06T10:50:00Z