DOI: 10.1002/2016GB005409
Scopus记录号: 2-s2.0-85027946898
论文题名: Seasonal and long-term changes in elemental concentrations and ratios of marine particulate organic matter
作者: Talarmin A ; , Lomas M ; W ; , Bozec Y ; , Savoye N ; , Frigstad H ; , Karl D ; M ; , Martiny A ; C
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2016
卷: 30, 期: 11 起始页码: 1699
结束页码: 1711
语种: 英语
英文关键词: ecological stoichiometry
; POM
; Redfield ratio
; time series
Scopus关键词: chemical element
; concentration (composition)
; environmental change
; isotopic ratio
; long-term change
; marine environment
; microbial community
; nutrient availability
; open ocean
; particulate organic matter
; Redfield ratio
; seasonal variation
; stoichiometry
; temperature effect
; time series
; Bermuda
; Hawaii [(ISL) Hawaiian Islands]
; Hawaii [United States]
; Hawaiian Islands
英文摘要: What is the temporal variability of the elemental stoichiometry of marine microbial communities across ocean regions? To answer this question, we present an analysis of environmental conditions, particulate organic carbon, nitrogen, and phosphorus concentrations and their ratios across 20 time series (3–25 years duration) representing estuarine, coastal, and open ocean environments. The majority of stations showed significant seasonal oscillations in particulate organic elemental concentrations and ratios. However, shorter-term changes contributed most to overall variance in particulate organic matter concentrations and ratios. We found a correlation between the seasonal oscillations of environmental conditions and elemental ratios at many coastal but not open ocean and estuarine stations. C:N peaked near the seasonal temperature minimum and nutrient maximum, but some stations showed other seasonal links. C:N ratios declined with time over the respective observation periods at all open ocean and estuarine stations as well as at five coastal station but increased at the nine other coastal stations. C:P (but not N:P) declined slightly at Bermuda Atlantic Time-series Study but showed large significant increases at Hawaii Ocean Time-series and Arendal stations. The relationships between long-term changes in environmental conditions and particulate organic matter concentrations or ratios were ambiguous, but interactions between changes in temperature and nutrient availability were important. Overall, our analysis demonstrates significant changes in elemental ratios at long-term and seasonal time scales across regions, but the underlying mechanisms are currently unclear. Thus, we need to better understand the detailed mechanisms driving the elemental composition of marine microbial ecosystems in order to predict how oceans will respond to environmental changes. ©2016. 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/77800
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Earth System Science, University of California, Irvine, CA, United States; Bigelow Laboratory for Ocean Sciences, East Boothbay, ME, United States; CNRS, Adaptation et Diversité en Milieu Marin, Sorbonne Universités, UPMC Université Paris 6, Roscoff, France; UMR 5805 EPOC, CNRS, Université Bordeaux, Arcachon, France; Norwegian Institute for Water Research, Oslo, Norway; Center for Microbial Oceanography: Research and Education, University of Hawai‘i Mānoa, Honolulu, HI, United States; Department of Ecology and Evolutionary Biology, University of California, Irvine, CA, United States
Recommended Citation:
Talarmin A,, Lomas M,W,et al. Seasonal and long-term changes in elemental concentrations and ratios of marine particulate organic matter[J]. Global Biogeochemical Cycles,2016-01-01,30(11)