DOI: 10.1029/2019GB006286
论文题名: Estimating Biogenic Silica Production of Rhizaria in the Global Ocean
作者: Llopis Monferrer N. ; Boltovskoy D. ; Tréguer P. ; Sandin M.M. ; Not F. ; Leynaert A.
刊名: Global Biogeochemical Cycles
ISSN: 0886-6236
EISSN: 1944-9224
出版年: 2020
卷: 34, 期: 3 语种: 英语
英文关键词: biogeochemical cycle
; biological uptake
; biomass
; cell
; estimation method
; global ocean
; particulate organic carbon
; protist
; silica
; silicic acid
; skeleton
; water column
; Mediterranean Sea
; Phaeodarea
; Polycystinea
; Protista
; Rhizaria
学科: Phaeodaria
; Polycystina
; Radiolaria
; Rhizaria
; silica cycle
; silicic acid uptake
中文摘要: Siliceous polycystines and phaeodarians are open-ocean planktonic protists found throughout the water column and characterized by complex siliceous skeletons that are formed, at least partly, through the uptake of silicic acid. These protists contribute to the marine organic carbon (C) and biogenic silica (bSi) pools, but little is known about their contribution to the silica (Si) biogeochemical cycle. Here we report the first measurements of the Si uptake rate of polycystine and phaeodarian cells from samples collected in the Mediterranean Sea using the 32Si-based method. The elementary composition (bSi, particulate organic carbon and nitrogen) of these organisms was also measured. Combining our results with published data on the distribution and abundance of Polycystina and Phaeodaria in the global ocean, we conclude that these organisms could contribute from 0.2 to 2.2 mmol Si m−2 of the marine standing stock of bSi and from 2 to 58 Tmol Si yr−1 (1% to 19%) of the global oceanic biogenic silica production. The implications for the global marine Si cycle are discussed. © 2020. 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/160049
Appears in Collections: 气候变化与战略
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作者单位: Université de Bretagne Occidentale, CNRS, IRD, Ifremer, LEMAR, Plouzane, France; Ecology of Marine Plankton Team, Station Biologique de Roscoff, Sorbonne University, CNRS, UMR7144, Roscoff, France; Institute of Ecology, Genetics and Evolution of Buenos Aires, University of Buenos Aires-CONICET, Buenos Aires, Argentina
Recommended Citation:
Llopis Monferrer N.,Boltovskoy D.,Tréguer P.,et al. Estimating Biogenic Silica Production of Rhizaria in the Global Ocean[J]. Global Biogeochemical Cycles,2020-01-01,34(3)