Pelagic ecosystem structure: Heterotrophic compartments of the plankton and their relationship to plankton size fractions 1

  title={Pelagic ecosystem structure: Heterotrophic compartments of the plankton and their relationship to plankton size fractions 1},
  author={John McN. Sieburth and V. Smet{\'a}cek and J{\"u}rgen Lenz},
  journal={Limnology and Oceanography},
Organisms in the plankton are generally assigned to one of the three compartmental groups: bacterioplankton, phytoplankton, and zooplankton. These groups are further subdivided into trophic levels on the basis of taxonomic categories well above the species level. This is unfortunate with regard to some protistan groups with differing modes of nutrition. Thus all the flagellates are grouped with the algae and are considered phytoplankton. Even the term “primary producers ,” obviously intended… 

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