| DOI: | 10.1002/2017GB005832
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| Scopus记录号: | 2-s2.0-85044261077
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| 论文题名: | Limitations on Limitation |
| 作者: | Laakso T; A; , Schrag D; P
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| 刊名: | Global Biogeochemical Cycles
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| ISSN: | 8866236
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| 出版年: | 2018
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| 卷: | 32, 期:3 | | 起始页码: | 486
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| 结束页码: | 496
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| 语种: | 英语
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| 英文关键词: | nutrient limitation
; oxygenation
; primary productivity
; Proterozoic
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| 英文摘要: | Phosphorus is believed to be the globally limiting nutrient in the modern ocean, but a number of nutrients have been invoked as limiting the Proterozoic biosphere. Mass balance calculations suggest that Proterozoic net primary productivity must have been 1 to 2 orders of magnitude less than today in order to maintain low oxygen levels despite increased burial efficiency in anoxic environments. The resulting demand for nutrients is so low that nitrogen, molybdenum, and iron could not have limited the rate of primary production following the evolution of extant nitrogenases. Phosphorus demand was approximately equal to the modern riverine flux, making phosphorus the most likely candidate for the limiting nutrient throughout the Proterozoic. ©2018. American Geophysical Union. All Rights Reserved. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/77655
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, United States
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| Recommended Citation: | |
Laakso T,A,, Schrag D,et al. Limitations on Limitation[J]. Global Biogeochemical Cycles,2018-01-01,32(3)
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