Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41561-018-0081-0 |
Global niche of marine anaerobic metabolisms expanded by particle microenvironments | |
Bianchi, Daniele1; Weber, Thomas S.2; Kiko, Rainer3; Deutsch, Curtis4 | |
2018-04-01 | |
发表期刊 | NATURE GEOSCIENCE
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ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2018 |
卷号 | 11期号:4页码:263-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Germany |
英文摘要 | In ocean waters, anaerobic microbial respiration should be confined to the anoxic waters found in coastal regions and tropical oxygen minimum zones, where it is energetically favourable. However, recent molecular and geochemical evidence has pointed to a much broader distribution of denitrifying and sulfate-reducing microbes. Anaerobic metabolisms are thought to thrive in microenvironments that develop inside sinking organic aggregates, but the global distribution and geochemical significance of these microenvironments is poorly understood. Here, we develop a new size-resolved particle model to predict anaerobic respiration from aggregate properties and seawater chemistry. Constrained by observations of the size spectrum of sinking particles, the model predicts that denitrification and sulfate reduction can be sustained throughout vast, hypoxic expanses of the ocean, and could explain the trace metal enrichment observed in particles due to sulfide precipitation. Globally, the expansion of the anaerobic niche due to particle microenvironments doubles the rate of water column denitrification compared with estimates based on anoxic zones alone, and changes the sensitivity of the marine nitrogen cycle to deoxygenation in a warming climate. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000429131600018 |
WOS关键词 | OXYGEN-MINIMUM-ZONE ; SOUTH-PACIFIC GYRE ; WATER-COLUMN ; EXPORT PRODUCTION ; SINKING VELOCITY ; DEFICIENT ZONES ; ORGANIC-MATTER ; AGGREGATE SIZE ; FECAL PELLETS ; OPEN-OCEAN |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/35120 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA 90095 USA; 2.Univ Rochester, Dept Earth & Environm Sci, Rochester, NY USA; 3.GEOMAR Helmholtz Ctr Ocean Res Kiel, Kiel, Germany; 4.Univ Washington, Sch Oceanog, Seattle, WA 98195 USA |
推荐引用方式 GB/T 7714 | Bianchi, Daniele,Weber, Thomas S.,Kiko, Rainer,et al. Global niche of marine anaerobic metabolisms expanded by particle microenvironments[J]. NATURE GEOSCIENCE,2018,11(4):263-+. |
APA | Bianchi, Daniele,Weber, Thomas S.,Kiko, Rainer,&Deutsch, Curtis.(2018).Global niche of marine anaerobic metabolisms expanded by particle microenvironments.NATURE GEOSCIENCE,11(4),263-+. |
MLA | Bianchi, Daniele,et al."Global niche of marine anaerobic metabolisms expanded by particle microenvironments".NATURE GEOSCIENCE 11.4(2018):263-+. |
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