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Estimating biogenic silica production of Rhizaria in the global ocean ArchiMer
Llopis Monferrer, Natalia; Boltovskoy, Demetrio; Tréguer, Paul; Mendez Sandin, Miguel; Not, Fabrice; Leynaert, Aude.
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...
Tipo: Text Palavras-chave: Silica cycle; Silicic acid uptake; Rhizaria; Polycystina; Phaeodaria; Radiolaria.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00609/72154/70904.pdf
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