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Patterns of diversity in marine phytoplankton
Barton, A.D.; Dutkiewicz, S.; Flierl, G.R.; Bragg, J.; Follows, M.J. (2010). Patterns of diversity in marine phytoplankton. Science (Wash.) 327(5962): 1509-1512. https://hdl.handle.net/10.1126/science.1184961
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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Keyword
    Marine

Authors  Top 
  • Barton, A.D.
  • Dutkiewicz, S.
  • Flierl, G.R.
  • Bragg, J.
  • Follows, M.J.

Abstract
    Spatial diversity gradients are a pervasive feature of life on Earth. We examined a global ocean circulation, biogeochemistry, and ecosystem model that indicated a decrease in phytoplankton diversity with increasing latitude, consistent with observations of many marine and terrestrial taxa. In the modeled subpolar oceans, seasonal variability of the environment led to competitive exclusion of phytoplankton with slower growth rates and lower diversity. The relatively weak seasonality of the stable subtropical and tropical oceans in the global model enabled long exclusion time scales and prolonged coexistence of multiple phytoplankton with comparable fitness. Superimposed on the decline in diversity seen from equator to pole were "hot spots" of enhanced diversity in some regions of energetic ocean circulation, which reflected lateral dispersal.

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