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Volumn 334, Issue 6055, 2011, Pages 505-509

Increasing N abundance in the northwestern pacific ocean due to atmospheric nitrogen deposition

Author keywords

[No Author keywords available]

Indexed keywords

NITRATE; NITRIC OXIDE; PHOSPHORUS; SEA WATER;

EID: 80055091455     PISSN: 00368075     EISSN: 10959203     Source Type: Journal    
DOI: 10.1126/science.1206583     Document Type: Article
Times cited : (229)

References (37)
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    • note
    • The low RN:P in the deep waters of the East Sea has not yet been explained. It is possible that the East Sea favors phytoplankton assimilation of N and P at a ratio lower than 16 (27-29).
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    • note
    • ANTH deposition and seawater N*were smoothed using a 2-year moving average before undertaking comparisons. This data treatment minimized potential biases in the correlations in Fig. 3, enabling comparison of the two parameters.
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    • note
    • The riverine influence is largely confined to Chinese coastal waters during winter (October to April), whereas, in summer (May to September), the freshwater plume extends northeast toward Cheju Island (on which an air-monitoring station, marked "A" in Fig. 3E, is located) (30). However, the impact of the river plume rapidly diminished away from the source, as indicated by a rapid decrease in N concentration from 40 μM at the mouth of the Changjiang River to 3 μM in offshore waters, ∼300 km distant from the river mouth (Fig. 3F) (31). About 75% of the total nitrogen load from the Changjiang River is added to the East China Sea during summer, with the remainder added during winter (32). In addition, we found no statistically significant correlations between seawater N*values in boxes 6 and 7 (wherein the effect of the Han River is likely strong) and N*values measured over the past 15 years in waters near the mouth of the Han River (fig. S6), indicating a negligible contribution from the Han River nitrogen flux into the Yellow Sea.
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    • note
    • 2 fixation blooms occur in tropical oceans in which the fixed N concentration is nearly zero and the sea surface temperature is generally higher than 25°C (35, 36). Most of our study areas featured sea surface temperatures below 25°C, except during the summer season, and the surface N concentrations were generally greater than the detection limits.
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.