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Gwen Noda

Increasing N Abundance in the Northwestern Pacific Ocean Due to Atmospheric Nitrogen De... - 0 views

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    "Published Online September 22 2011
    Science 28 October 2011:
    Vol. 334 no. 6055 pp. 505-509
    DOI: 10.1126/science.1206583

    Report

    Increasing N Abundance in the Northwestern Pacific Ocean Due to Atmospheric Nitrogen Deposition

    Tae-Wook Kim1,
    Kitack Lee1,*,
    Raymond G. Najjar2,
    Hee-Dong Jeong3,
    Hae Jin Jeong4

    + Author Affiliations

    1School of Environmental Science and Engineering, Pohang University of Science and Technology, Pohang, 790−784, Korea.
    2Department of Meteorology, The Pennsylvania State University, University Park, PA 16802, USA.
    3East Sea Fisheries Research Institute, National Fisheries Research and Development Institute, Gangneung, 210-861, Korea.
    4School of Earth and Environmental Sciences, Seoul National University, Seoul, 151−747, Korea.

    ↵*To whom correspondence should be addressed. E-mail: ktl@postech.ac.kr

    Abstract

    The relative abundance of nitrate (N) over phosphorus (P) has increased over the period since 1980 in the marginal seas bordering the northwestern Pacific Ocean, located downstream of the populated and industrialized Asian continent. The increase in N availability within the study area was mainly driven by increasing N concentrations and was most likely due to deposition of pollutant nitrogen from atmospheric sources. Atmospheric nitrogen deposition had a high temporal correlation with N availability in the study area (r = 0.74 to 0.88), except in selected areas wherein riverine nitrogen load may be of equal importance. The increase in N availability caused by atmospheric deposition and riverine input has switched extensive parts of the study area from being N-limited to P-limited. "
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