Primary Productivity of Phytoplankton

  • Robert G. Wetzel
  • Gene E. Likens


Although appreciable quantities of organic matter synthesized by terrestrial plants within the drainage basin can be transported to freshwater ecosystems in either dissolved or particulate forms (allochthonous primary productivity), much of the organic matter of lakes is produced within the lake by phytoplanktonic algae, by littoral macrophytic vegetation, and by sessile algae (autochthonous primary productivity). In situ rates of photosynthesis by phytoplankton are the subject of this exercise; those of other plant forms will be treated separately in Exercise 22.


Respiratory Quotient Euphotic Zone Dark Bottle Suspension Line Underwater Light 
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Copyright information

© Springer Science+Business Media New York 1991

Authors and Affiliations

  • Robert G. Wetzel
    • 1
  • Gene E. Likens
    • 2
  1. 1.Department of Biology, College of Arts and SciencesUniversity of AlabamaTuscaloosaUSA
  2. 2.Institute of Ecosystem StudiesThe New York Botanical Garden, Cary ArboretumMillbrookUSA

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