Eukaryotic plankton diversity in the sunlit ocean

Tara Oceans Coordinators

Research output: Contribution to journalArticle

522 Citations (Scopus)

Abstract

Marine plankton support global biological and geochemical processes. Surveys of their biodiversity have hitherto been geographically restricted and have not accounted for the full range of plankton size. We assessed eukaryotic diversity from 334 size-fractionated photic-zone plankton communities collected across tropical and temperate oceans during the circumglobal Tara Oceans expedition. We analyzed 18S ribosomal DNA sequences across the intermediate plankton-size spectrum from the smallest unicellular eukaryotes (protists, >0.8 micrometers) to small animals of a few millimeters. Eukaryotic ribosomal diversity saturated at ∼150,000 operational taxonomic units, about one-third of which could not be assigned to known eukaryotic groups. Diversity emerged at all taxonomic levels, both within the groups comprising the ∼11,200 cataloged morphospecies of eukaryotic plankton and among twice as many other deep-branching lineages of unappreciated importance in plankton ecology studies. Most eukaryotic plankton biodiversity belonged to heterotrophic protistan groups, particularly those known to be parasites or symbiotic hosts.

Original languageEnglish (US)
Article number1261605
JournalScience
Volume348
Issue number6237
DOIs
StatePublished - May 22 2015

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Plankton
Oceans and Seas
Biodiversity
Expeditions
Biological Phenomena
Ribosomal DNA
Ecology
Eukaryota
Parasites

ASJC Scopus subject areas

  • General

Cite this

Eukaryotic plankton diversity in the sunlit ocean. / Tara Oceans Coordinators.

In: Science, Vol. 348, No. 6237, 1261605, 22.05.2015.

Research output: Contribution to journalArticle

Tara Oceans Coordinators 2015, 'Eukaryotic plankton diversity in the sunlit ocean', Science, vol. 348, no. 6237, 1261605. https://doi.org/10.1126/science.1261605
Tara Oceans Coordinators. / Eukaryotic plankton diversity in the sunlit ocean. In: Science. 2015 ; Vol. 348, No. 6237.
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abstract = "Marine plankton support global biological and geochemical processes. Surveys of their biodiversity have hitherto been geographically restricted and have not accounted for the full range of plankton size. We assessed eukaryotic diversity from 334 size-fractionated photic-zone plankton communities collected across tropical and temperate oceans during the circumglobal Tara Oceans expedition. We analyzed 18S ribosomal DNA sequences across the intermediate plankton-size spectrum from the smallest unicellular eukaryotes (protists, >0.8 micrometers) to small animals of a few millimeters. Eukaryotic ribosomal diversity saturated at ∼150,000 operational taxonomic units, about one-third of which could not be assigned to known eukaryotic groups. Diversity emerged at all taxonomic levels, both within the groups comprising the ∼11,200 cataloged morphospecies of eukaryotic plankton and among twice as many other deep-branching lineages of unappreciated importance in plankton ecology studies. Most eukaryotic plankton biodiversity belonged to heterotrophic protistan groups, particularly those known to be parasites or symbiotic hosts.",
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AU - De Vargas, Colomban

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AU - Ogata, Hiroyuki

AU - Pesant, Stephane

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N2 - Marine plankton support global biological and geochemical processes. Surveys of their biodiversity have hitherto been geographically restricted and have not accounted for the full range of plankton size. We assessed eukaryotic diversity from 334 size-fractionated photic-zone plankton communities collected across tropical and temperate oceans during the circumglobal Tara Oceans expedition. We analyzed 18S ribosomal DNA sequences across the intermediate plankton-size spectrum from the smallest unicellular eukaryotes (protists, >0.8 micrometers) to small animals of a few millimeters. Eukaryotic ribosomal diversity saturated at ∼150,000 operational taxonomic units, about one-third of which could not be assigned to known eukaryotic groups. Diversity emerged at all taxonomic levels, both within the groups comprising the ∼11,200 cataloged morphospecies of eukaryotic plankton and among twice as many other deep-branching lineages of unappreciated importance in plankton ecology studies. Most eukaryotic plankton biodiversity belonged to heterotrophic protistan groups, particularly those known to be parasites or symbiotic hosts.

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