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Niche partitioning among Prochlorococcus ecotypes along ocean-scale environmental gradients
Johnson, Z.I.; Zinser, E.R.; Coe, A.; McNulty, N.P.; Woodward, E.M.S.; Chisholm, S.W. (2006). Niche partitioning among Prochlorococcus ecotypes along ocean-scale environmental gradients. Science (Wash.) 311(5768): 1737-1740
In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075, more
Peer reviewed article  

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Keywords
    Abundance; Ecotypes; Environmental effects; Phytoplankton; Primary production; Temperature effects; Temperature gradients; Prochlorococcus S.W.Chisholm, S.L.Frankel, R.Goericke, R.J.Olson, B.Palenik, J.B.Waterbury, L.West-Johnsrud & E.R.Zettler, 1992 [WoRMS]; Marine

Authors  Top 
  • Johnson, Z.I.
  • Zinser, E.R.
  • Coe, A.
  • McNulty, N.P.
  • Woodward, E.M.S.
  • Chisholm, S.W.

Abstract
    Prochlorococcus is the numerically dominant phytoplankter in the oligotrophic oceans, accounting for up to half of the photosynthetic biomass and production in some regions. Here, we describe how the abundance of six known ecotypes, which have small subunit ribosomal RNA sequences that differ by less than 3%, changed along local and basin-wide environmental gradients in the Atlantic Ocean. Temperature was significantly correlated with shifts in ecotype abundance, and laboratory experiments confirmed different temperature optima and tolerance ranges for cultured strains. Light, nutrients, and competitor abundances also appeared to play a role in shaping different distributions.

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