Global marine plankton functional type biomass distributions

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Author(s) Vogt, Meike, O'Brien, Colleen J., Peloquin, Jill, et al.
Publication Type Journal Items, Publication Status: Published
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Title Global marine plankton functional type biomass distributions
Subtitle Phaeocystis spp.
Author(s) Vogt, Meike
O'Brien, Colleen J.
Peloquin, Jill
et al.
Journal or Series Title Earth system science data
Volume Number 4
Issue Number 1
Start Page 107
End Page 120
ISSN 1866-3516
Publisher Copernics Publications
Publication Place Katlenburg-Lindau
Publication Date 2012
Abstract The planktonic haptophyte Phaeocystis has been suggested to play a fundamental role in the global biogeochemical cycling of carbon and sulphur, but little is known about its global biomass distribution. We have collected global microscopy data of the genus Phaeocystis and converted abundance data to carbon biomass using species-specific carbon conversion factors. Microscopic counts of single-celled and colonial Phaeocystis were obtained both through the mining of online databases and by accepting direct submissions (both published and unpublished) from Phaeocystis specialists. We recorded abundance data from a total of 1595 depth-resolved stations sampled between 1955–2009. The quality-controlled dataset includes 5057 counts of individual Phaeocystis cells resolved to species level and information regarding life-stages from 3526 samples. 83% of stations were located in the Northern Hemisphere while 17% were located in the Southern Hemisphere. Most data were located in the latitude range of 50–70° N. While the seasonal distribution of Northern Hemisphere data was well-balanced, Southern Hemisphere data was biased towards summer months. Mean species- and form-specific cell diameters were determined from previously published studies. Cell diameters were used to calculate the cellular biovolume of Phaeocystis cells, assuming spherical geometry. Cell biomass was calculated using a carbon conversion factor for prymnesiophytes. For colonies, the number of cells per colony was derived from the colony volume. Cell numbers were then converted to carbon concentrations. An estimation of colonial mucus carbon was included a posteriori, assuming a mean colony size for each species. Carbon content per cell ranged from 9 pg C cell−1 (single-celled Phaeocystis antarctica) to 29 pg C cell−1 (colonial Phaeocystis globosa). Non-zero Phaeocystis cell biomasses (without mucus carbon) range from 2.9 × 10−5 to 5.4 × 103 μg C l−1, with a mean of 45.7 μg C l−1 and a median of 3.0 μg C l−1. The highest biomasses occur in the Southern Ocean below 70° S (up to 783.9 μg C l−1) and in the North Atlantic around 50° N (up to 5.4 × 103 μg C l−1).
DOI 10.5194/essd-4-107-2012
Additional Notes Received 24 April 2012, Published in Earth Syst. Sci. Data Discuss. 16 May 2012, Revised 14 August 2012, Accepted 15 August 2012, Published 12 September 2012
Document Type Article
Publication Status Published
Language English
Assigned Organisational Unit(s) 03731
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Source Database ID FORM-1357827249
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  author = "Vogt, Meike and O'Brien, Colleen J. and Peloquin, Jill and et al.",
  title = "{G}lobal marine plankton functional type biomass distributions: {P}haeocystis spp.",
  journal = "Earth system science data",
  year = 2012,
  volume = "4",
  number = "1",
  pages = "107--120",

E-Citations record created: Thu, 10 Jan 2013, 14:14:15 CET