21st-century rise in anthropogenic nitrogen deposition on a remote coral reef

被引：115

作者：

Ren, Haojia ^{[1
]}

Chen, Yi-Chi ^{[1
]}

Wang, Xingchen T. ^{[2
,7
]}

Wong, George T. F. ^{[3
,4
]}

Cohen, Anne L. ^{[5
]}

DeCarlo, Thomas M. ^{[5
,8
,9
,10
]}

Weigand, Mira A. ^{[2
]}

Mii, Horng-Sheng ^{[6
]}

Sigman, Daniel M. ^{[2
]}

机构：

[1] Natl Taiwan Univ, Dept Geosci, Taipei, Taiwan

[2] Princeton Univ, Dept Geosci, Princeton, NJ 08544 USA

[3] Acad Sinica, Res Ctr Environm Changes, Taipei, Taiwan

[4] Old Dominion Univ, Dept Ocean Earth & Atmospher Sci, Norfolk, VA 23529 USA

[5] Woods Hole Oceanog Inst, Dept Geol & Geophys, Woods Hole, MA 02543 USA

[6] Natl Taiwan Normal Univ, Dept Earth Sci, Taipei, Taiwan

[7] CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA

[8] Univ Western Australia, Sch Earth Sci, Crawley, WA, Australia

[9] Univ Western Australia, Oceans Inst, Crawley, WA, Australia

[10] Univ Western Australia, Australian Res Council, Ctr Excellence Coral Reef Studies, Crawley, WA, Australia

来源：

SCIENCE | 2017年 / 356卷 / 6339期

基金：

美国国家科学基金会;

关键词：

SOUTH CHINA SEA; ATMOSPHERIC DEPOSITION; ISOTOPIC COMPOSITION; OPEN-OCEAN; NITRATE; IMPACTS; STATION; BERMUDA; SPACE; N-15;

D O I：

10.1126/science.aal3869

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

With the rapid rise in pollution-associated nitrogen inputs to the western Pacific, it has been suggested that even the open ocean has been affected. In a coral core from Dongsha Atoll, a remote coral reef ecosystem, we observe a decline in the N-15/N-14 of coral skeleton-bound organic matter, which signals increased deposition of anthropogenic atmospheric N on the open ocean and its incorporation into plankton and, in turn, the atoll corals. The first clear change occurred just before 2000 CE, decades later than predicted by other work. The amplitude of change suggests that, by 2010, anthropogenic atmospheric N deposition represented 20 +/- 5% of the annual N input to the surface ocean in this region, which appears to be at the lower end of other estimates.

引用

页码：749 / 752

页数：4

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