Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1818014116 |
Microbial ecosystem dynamics drive fluctuating nitrogen loss in marine anoxic zones | |
Penn, Justin L.1; Weber, Thomas2; Chang, Bonnie X.3,4; Deutsch, Curtis1,5 | |
2019 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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ISSN | 0027-8424 |
出版年 | 2019 |
卷号 | 116期号:15页码:7220-7225 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The dynamics of nitrogen (N) loss in the ocean's oxygen-deficient zones (ODZs) are thought to be driven by climate impacts on ocean circulation and biological productivity. Here we analyze a data-constrained model of the microbial ecosystem in an ODZ and find that species interactions drive fluctuations in local- and regional-scale rates of N loss, even in the absence of climate variability. By consuming O-2 to nanomolar levels, aerobic nitrifying microbes cede their competitive advantage for scarce forms of N to anaerobic denitrifying bacteria. Because anaerobes cannot sustain their own low-O-2 niche, the physical O-2 supply restores competitive advantage to aerobic populations, resetting the cycle. The resulting ecosystem oscillations induce a unique geochemical signature within the ODZ-short-lived spikes of ammonium that are found in measured profiles. The microbial ecosystem dynamics also give rise to variable ratios of anammox to heterotrophic denitrification, providing a mechanism for the unexplained variability of these pathways observed in the ocean. |
英文关键词 | microbial ecology oxygen minimum zones nitrogen cycle species oscillations |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000463936900015 |
WOS关键词 | NORTH PACIFIC ; WATER-COLUMN ; OXYGEN ; DENITRIFICATION ; NITRITE ; OSCILLATIONS ; PLANKTON ; ANAMMOX ; RATES ; OXIDE |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/205088 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Washington, Sch Oceanog, Seattle, WA 98195 USA; 2.Univ Rochester, Dept Earth & Environm Sci, Rochester, NY 14627 USA; 3.Univ Washington, Joint Inst Study Atmosphere & Ocean, Seattle, WA 98195 USA; 4.NOAA, Pacific Marine Environm Lab, Seattle, WA 98115 USA; 5.Univ Washington, Dept Biol, Seattle, WA 98195 USA |
推荐引用方式 GB/T 7714 | Penn, Justin L.,Weber, Thomas,Chang, Bonnie X.,et al. Microbial ecosystem dynamics drive fluctuating nitrogen loss in marine anoxic zones[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2019,116(15):7220-7225. |
APA | Penn, Justin L.,Weber, Thomas,Chang, Bonnie X.,&Deutsch, Curtis.(2019).Microbial ecosystem dynamics drive fluctuating nitrogen loss in marine anoxic zones.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,116(15),7220-7225. |
MLA | Penn, Justin L.,et al."Microbial ecosystem dynamics drive fluctuating nitrogen loss in marine anoxic zones".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 116.15(2019):7220-7225. |
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