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Kim TW, Lee K, Najjar RG, Jeong HD, and Jeong HJ (2011) Increasing N abundance relative to P in the northwestern Pacific Ocean due to anthropogenic nitrogen deposition.  Science. 334:505-509   

 

Increasing N abundance relative to P in the northwestern Pacific Ocean due to anthropogenic nitrogen deposition

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

 

The relativeabundance of nitrate (N) over phosphorus (P) has increased significantly 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 N from atmospheric sources. Atmospheric N deposition had a high temporal correlation with N availability in the study area (r = 0.74-0.88), except in selected areas wherein riverine N load may be of equal importance. The increase in N availability caused by atmospheric deposition and riverine input has switched the extensive parts of the study area from being N-limited to P-limited.