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Journal Articles (Data Paper) Earth System Science Data Year : 2012

Picophytoplankton biomass distribution in the global ocean

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Abstract

The smallest marine phytoplankton, collectively termed picophytoplankton, have been routinely enumerated by flow cytometry since the late 1980s, during cruises throughout most of the world ocean. We compiled a database of 40 946 data points, with separate 5 abundance entries for Prochlorococcus, Synechococcus and picoeukaryotes. We use average conversion factors for each of the three groups to convert the abundance data to carbon biomass. After gridding with 1 spacing, the database covers 2.4% of the ocean surface area, with the best data coverage in the North Atlantic, the South Pacific and North Indian basins. The average picophytoplankton biomass is 12±22 μgCl−1 or 10 1.9 gCm−2. We estimate a total global picophytoplankton biomass of 0.53-0.74PgC (17-39% Prochlorococcus, 12-15% Synechococcus and 49-69% picoeukaryotes).Future efforts in this area of research should focus on reporting calibrated cell size, and collecting data in undersampled regions.
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Dates and versions

hal-00939662 , version 1 (02-11-2015)

Licence

Attribution - CC BY 4.0

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Cite

E. T. Buitenhuis, W. K. W. Li, Daniel Vaulot, M. W. Lomas, M. R. Landry, et al.. Picophytoplankton biomass distribution in the global ocean. Earth System Science Data, 2012, 4 (1), pp.201-242. ⟨10.5194/essd-4-37-2012⟩. ⟨hal-00939662⟩
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