DOI: 10.1038/ngeo1757
论文题名: Strong latitudinal patterns in the elemental ratios of marine plankton and organic matter
作者: Martiny A.C. ; Pham C.T.A. ; Primeau F.W. ; Vrugt J.A. ; Moore J.K. ; Levin S.A. ; Lomas M.W.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2013
卷: 6, 期: 4 起始页码: 279
结束页码: 283
语种: 英语
Scopus关键词: biogeochemistry
; carbon
; chemical composition
; community structure
; dissolved matter
; gyre
; latitude
; marine environment
; nitrogen fixation
; numerical model
; nutrient enrichment
; organic matter
; particulate organic matter
; phosphorus
; plankton
; population structure
; Redfield ratio
; spatial variation
英文摘要: Nearly 75 years ago, Alfred C. Redfield observed a similarity between the elemental composition of marine plankton in the surface ocean and dissolved nutrients in the ocean interior. This stoichiometry, referred to as the Redfield ratio, continues to be a central tenet in ocean biogeochemistry, and is used to infer a variety of ecosystem processes, such as phytoplankton productivity and rates of nitrogen fixation and loss2-4. Model, field and laboratory studies have shown that different mechanisms can explain both constant and variable ratios of carbon to nitrogen and phosphorus among ocean plankton communities. The range of C/N/P ratios in the ocean, and their predictability, are the subject of much active research. Here we assess global patterns in the elemental composition of phytoplankton and particulate organic matter in the upper ocean, using published and unpublished observations of particulate phosphorus, nitrogen and carbon from a broad latitudinal range, supplemented with elemental data for surface plankton populations. We show that the elemental ratios of marine organic matter exhibit large spatial variations, with a global average that differs substantially from the canonical Redfield ratio. However, elemental ratios exhibit a clear latitudinal trend. Specifically, we observed a ratio of 195:28:1 in the warm nutrient-depleted low-latitude gyres, 137:18:1 in warm, nutrient-rich upwelling zones, and 78:13:1 in cold, nutrient-rich high-latitude regions. We suggest that the coupling between oceanic carbon, nitrogen and phosphorus cycles may vary systematically by ecosystem. © 2013 Macmillan Publishers Limited. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106811
Appears in Collections: 气候减缓与适应 科学计划与规划
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作者单位: Department of Earth System Science, University of California, Irvine, CA 92697, United States; Department of Ecology and Evolutionary Biology, University of California, Irvine, CA 92697, United States; Department of Civil and Environmental Engineering, University of California, Irvine, CA 92697, United States; Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544, United States; Bermuda Institute of Ocean Sciences, St George's GE 01, Bermuda
Recommended Citation:
Martiny A.C.,Pham C.T.A.,Primeau F.W.,et al. Strong latitudinal patterns in the elemental ratios of marine plankton and organic matter[J]. Nature Geoscience,2013-01-01,6(4)