Widespread Anthropogenic Nitrogen in Northwestern Pacific Ocean Sediment SCIE SCOPUS

Cited 8 time in WEB OF SCIENCE Cited 8 time in Scopus
Title
Widespread Anthropogenic Nitrogen in Northwestern Pacific Ocean Sediment
Author(s)
Kim, Haryun; Lee, Kitack; Lim, Dhong-Il; Nam, Seung-Il; Kim, Tae-Wook; Yang, Jin-Yu T.; Ko, Young Ho; Shin, Kyung-Hoon; Lee, Eunil
KIOST Author(s)
Lim, Dhong Il(임동일)
Publication Year
2017-06-06
Abstract
Sediment samples from the East China and Yellow seas collected adjacent to continental China were found to have lower delta N-15 values (expressed as delta N-15 = [N-15:N-14(sample)/N-15:N-14(air) - 1] x 1000; the sediment N-15:N-14 ratio relative to the air nitrogen 15N:14N ratio). In contrast, the Arctic sediments from the Chukchi Sea, the sampling region furthest from China, showed higher delta N-15 values (2-3 higher than those representing the East China and the Yellow sea sediments). Across the sites sampled, the levels of sediment delta N-15 increased with increasing distance from China, which is broadly consistent with the decreasing influence of anthropogenic nitrogen (N-ANTH) resulting from fossil fuel combustion and fertilizer use. We concluded that, of several processes, the input of N-ANTH appears to be emerging as a new driver of change in the sediment delta N-15 value in marginal seas adjacent to China. The present results indicate that the effect of N-ANTH has extended beyond the ocean water column into the deep sedimentary environment, presumably via biological assimilation of N-ANTH followed by deposition. Further, the findings indicate that N-ANTH is taking over from the conventional paradigm of nitrate flux from nitrate-rich deep water as the primary driver of biological export production in this region of the Pacific Ocean.
ISSN
0013-936X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/1210
DOI
10.1021/acs.est.6b05316
Bibliographic Citation
ENVIRONMENTAL SCIENCE & TECHNOLOGY, v.51, no.11, pp.6044 - 6052, 2017
Publisher
AMER CHEMICAL SOC
Subject
ORGANIC-MATTER SOURCES; SOUTH CHINA SEA; SURFACE SEDIMENTS; ISOTOPIC COMPOSITION; RIVER ESTUARY; ARCTIC-OCEAN; YELLOW SEA; CARBON; ACCUMULATION; DELTA-N-15
Type
Article
Language
English
Document Type
Article
Publisher
AMER CHEMICAL SOC
Related Researcher
Research Interests

Marine Geochemistry,Paleoceanography,Marine Pollution,해양지화학,고해양학,해양오염학

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