DOI: 10.1002/gbc.20045
Scopus记录号: 2-s2.0-84878657929
论文题名: Evidence for changes in carbon isotopic fractionation by phytoplankton between 1960 and 2010
作者: Young J ; N ; , Bruggeman J ; , Rickaby R ; E ; M ; , Erez J ; , Conte M
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2013
卷: 27, 期: 2 起始页码: 505
结束页码: 515
语种: 英语
英文关键词: carbon dioxide
; carbon isotopic fractionation
; climate change
; photosynthesis
; phytoplankton
Scopus关键词: Biological fractionation
; Community composition
; Environmental change
; Intracellular transport
; Isotopic fractionations
; Particulate organic matters
; Stable carbon isotopes
; Temporal and spatial
; Carbon dioxide
; Climate change
; Forestry
; Isotopes
; Photosynthesis
; Phytoplankton
; Carbon
; biogeochemistry
; carbon dioxide
; carbon isotope
; climate change
; community composition
; isotopic fractionation
; particulate organic matter
; photosynthesis
; phytoplankton
; stable isotope
; Bermuda
英文摘要: Rising CO2 is expected to drive a myriad of environmental changes in the surface ocean. Deciphering the phytoplankton response to this complex change is difficult. Here we determine whether a trend in the biological fractionation of stable carbon isotopes (εp) has occurred over the past 50 years. εp is primarily controlled by the acquisition and intracellular transport of inorganic carbon and the rate of carbon fixation. In turn, these processes are sensitive to phytoplankton physiology, community composition, and notably inorganic carbon availability. εp may therefore carry a signal of biological response to climate change. Temporal and spatial records of εp can be deciphered from the difference between the stable carbon isotopic composition of particulate organic matter (δ13CPOC) and that of the ambient inorganic carbon pool (δ13CCO2). Here we establish a global record of εp extending from the 1960s to today, extracted from a newly compiled data set of global measured δ13CPOC and part measured/part climatology δ13CCO2. We find that εp has changed significantly since the 1960s in the low- to mid-latitude surface ocean. The increase is most pronounced in the subtropics, where it is estimated at > 0.015‰ per year. Our findings of such rates of change are further supported by a high resolution temporal record from a single sediment trap near Bermuda. Our results are consistent with the idea that εp is affected by increased inorganic carbon availability driven by the rise in atmospheric CO2.©2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77646
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Earth Sciences, Oxford University, Oxford, United Kingdom; Department of Geosciences, Princeton University, Princeton, NJ, United States; Earth Sciences Institute, Hebrew University, Jerusalem, Israel; Bermuda Institute of Ocean Sciences, St. Georges, Bermuda
Recommended Citation:
Young J,N,, Bruggeman J,et al. Evidence for changes in carbon isotopic fractionation by phytoplankton between 1960 and 2010[J]. Global Biogeochemical Cycles,2013-01-01,27(2)