气候变化领域集成服务门户(CCPortal): Limitations on Limitation

CCPortal

DOI	10.1002/2017GB005832
	Limitations on Limitation
	Laakso T.A.; Schrag D.P.
发表日期	2018
ISSN	0886-6236
EISSN	1944-9224
起始页码	486
结束页码	496
卷号	32 期号:3
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.
英文关键词	nutrient limitation; oxygenation; primary productivity; Proterozoic
语种	英语
scopus关键词	anoxic conditions; iron; mass balance; molybdenum; nitrogen; nutrient limitation; oxygen; oxygenation; phosphorus; primary production; Proterozoic
来源期刊	Global Biogeochemical Cycles
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129849
作者单位	Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, United States
推荐引用方式 GB/T 7714	Laakso T.A.,Schrag D.P.. Limitations on Limitation[J],2018,32(3).
APA	Laakso T.A.,&Schrag D.P..(2018).Limitations on Limitation.Global Biogeochemical Cycles,32(3).
MLA	Laakso T.A.,et al."Limitations on Limitation".Global Biogeochemical Cycles 32.3(2018).